Publications - Publications https://css.au.dk/en/publications?tx_pure_pure5%5Bcontroller%5D=Publications&cHash=e6524cd25fbbe2c16ab956af0a9ce329 en-us PURE Extension typo3support@science.au.dk (Web Department) 30 <![CDATA[Nobelprisen går til...]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=72d40f13-03e8-4fe6-a9af-5a7a11bbe976&tx_pure_pure5%5BshowType%5D=pub&cHash=2c6dfce672492d8e88e9abbf998be604 Nielsen, K. H. Research Mon, 01 Jan 2024 20:43:24 +0100 72d40f13-03e8-4fe6-a9af-5a7a11bbe976 <![CDATA[Mennesket ud af landbruget]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=f6ca7a60-723f-4830-aa7d-399a9f081ba4&tx_pure_pure5%5BshowType%5D=pub&cHash=3cf88d77220848d247c22544cc6ed417 Nielsen, K. H. Communication Fri, 28 Jun 2024 20:43:24 +0200 f6ca7a60-723f-4830-aa7d-399a9f081ba4 <![CDATA[Hormoner eller ej]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=b2b8ad21-03fb-41bf-982c-0dba362c70bb&tx_pure_pure5%5BshowType%5D=pub&cHash=fbeffac436f73b4357a3cbfac30a3f3a Nielsen, K. H. Communication Fri, 14 Jun 2024 20:43:24 +0200 b2b8ad21-03fb-41bf-982c-0dba362c70bb <![CDATA[Open Educational Resources on Open Science and Responsible Research and Innovation (Open RRI)]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=a2554727-b817-4127-adae-dd5001bd4a66&tx_pure_pure5%5BshowType%5D=pub&cHash=a4f5ae8d0e20b08fe4ef4282c86a6ea4 Lagido, C., Nielsen, K. H., Kragh, G., et al. Research Mon, 01 Jan 2024 20:43:24 +0100 a2554727-b817-4127-adae-dd5001bd4a66 <![CDATA[PreCareKlinikken – et borgerperspektiv]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=2cd53726-7411-40eb-866c-b8ed104155ce&tx_pure_pure5%5BshowType%5D=pub&cHash=3b9b6f5f92608cde0b97f4cdb366ca14 Eriksen, J., Eriksen, K., weber, D., Ebbesen, M., Nøhr, C. Research Sun, 01 Jan 2023 20:43:24 +0100 2cd53726-7411-40eb-866c-b8ed104155ce <![CDATA[Equity in digital healthcare – the case of Denmark]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=d15298e5-12b0-4156-a9e7-854dbc03e5fe&tx_pure_pure5%5BshowType%5D=pub&cHash=091cbe0a510a48ac23b61228f88eb1f4 Eriksen, J., Ebbesen, M., KT, E., et al. Research Sun, 01 Jan 2023 20:43:24 +0100 d15298e5-12b0-4156-a9e7-854dbc03e5fe <![CDATA[Artificial Intelligence Aided Ethics in Frontier Research]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=ff373347-1ab7-4bc5-86ac-4aad02f1aea0&tx_pure_pure5%5BshowType%5D=pub&cHash=a50af41da3ac4afbecab1e81c7e69ff1 Lantada, A., Ebbesen, M. Research Sun, 01 Jan 2023 20:43:24 +0100 ff373347-1ab7-4bc5-86ac-4aad02f1aea0 <![CDATA[Opening science to society]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=3bd235e5-dd2d-43bc-807b-98c80c4d67a2&tx_pure_pure5%5BshowType%5D=pub&cHash=19bdff2c806fe6579ba67502849c9d90 Wehn, U., Ajates, R., Mandeville, C., Somerwill, L., Kragh, G., Haklay, M. A broad understanding of the aims and objectives of the international open science movement was recently adopted with the 2021 UNESCO Recommendation on Open Science, expanding the focus of open science to include scientific knowledge, infrastructures, knowledge systems and the open engagement of societal actors. In response, recent discussions on science policy practice are shifting to the implementation of open science via national policy. While policy instruments to support some aspects of open science are well-studied, guidance on the emerging 'social' aspects of open science has lagged, prompting UNESCO to generate guidance. In this paper, authors of a UNESCO Open Science Toolkit guidance document on 'Engaging societal actors in Open Science' synthesize the scholarly underpinnings behind the guidance document's recommendations. This work draws upon a targeted search from academic, policy, and grey literature in the fields of open science and community engagement, with a special focus on citizen science, to derive guidance on how to overcome barriers to the uptake of societal engagement approaches. The results present building blocks of what an enabling environment for the open engagement of societal actors could look like, identifying key considerations and reflecting on opportunities and challenges for progressing and evaluating sound open engagement of societal actors into regional & national (open) science policies.

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Research Wed, 01 May 2024 20:43:24 +0200 3bd235e5-dd2d-43bc-807b-98c80c4d67a2
<![CDATA[Explanatory Stabilization in Situations of Evidential Uncertainty]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=eede0e1c-9f73-48f5-b630-ba52ffc2f9f1&tx_pure_pure5%5BshowType%5D=pub&cHash=835a11bf3724525c176b1eca36e01edd Schindler, S. Research Mon, 01 Jan 2024 20:43:24 +0100 eede0e1c-9f73-48f5-b630-ba52ffc2f9f1 <![CDATA[Hvid dominans i jernstøberiet]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=9631a48b-6c50-4518-a70b-1c780d600b79&tx_pure_pure5%5BshowType%5D=pub&cHash=dbcfd1ffbd761c4a4e2b36e66aa530e0 Nielsen, K. H. Communication Wed, 08 May 2024 20:43:24 +0200 9631a48b-6c50-4518-a70b-1c780d600b79 <![CDATA[Einsteins problematiske Nobelpris]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=3c0fd143-efa5-43ce-9b07-471f61f6f9c4&tx_pure_pure5%5BshowType%5D=pub&cHash=89e45d5360e7e1e27a91da710c1b2f49 Nielsen, K. H. Communication Fri, 24 May 2024 20:43:24 +0200 3c0fd143-efa5-43ce-9b07-471f61f6f9c4 <![CDATA[Blitzkrig i haven]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=9274795e-e90f-4eb2-897e-3b2c320ffa09&tx_pure_pure5%5BshowType%5D=pub&cHash=427048ec0263101fff5065edc3195a12 Nielsen, K. H. Communication Fri, 31 May 2024 20:43:24 +0200 9274795e-e90f-4eb2-897e-3b2c320ffa09 <![CDATA[Mastering the History of Pure and Applied Mathematics]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=c19ad766-2246-4fd0-be5e-22d4d5c6bee3&tx_pure_pure5%5BshowType%5D=pub&cHash=bb79d37a4c5956959ac2a111196ede39 Research Mon, 01 Jan 2024 20:43:24 +0100 c19ad766-2246-4fd0-be5e-22d4d5c6bee3 <![CDATA[Introducing the Philosophy of Mathematical Practice]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=0f6c4bc3-12d2-4588-a1e9-8fe41563291e&tx_pure_pure5%5BshowType%5D=pub&cHash=40aa5ddd26e7b2669880f87fa2090da8 Carter, J. Research Mon, 01 Jan 2024 20:43:24 +0100 0f6c4bc3-12d2-4588-a1e9-8fe41563291e <![CDATA[Fodbold er data]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=dba76837-a66a-4bff-90a8-a5615caf363a&tx_pure_pure5%5BshowType%5D=pub&cHash=13e0fea4285fa24b950c5b38d2faed99 Nielsen, K. H. Communication Fri, 12 Apr 2024 20:43:24 +0200 dba76837-a66a-4bff-90a8-a5615caf363a <![CDATA[Operation flere babyer]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=1cf61bd9-0783-4a13-8331-407396b9a11c&tx_pure_pure5%5BshowType%5D=pub&cHash=6014f61f3c0898762c2719dffdcf6b49 Nielsen, K. H. Communication Fri, 26 Apr 2024 20:43:24 +0200 1cf61bd9-0783-4a13-8331-407396b9a11c <![CDATA[Normal science]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=f2f87cd8-5056-4887-9907-86ba083da0bd&tx_pure_pure5%5BshowType%5D=pub&cHash=22b0273937845a836588008e33605efc Schindler, S. When Kuhn first published his Structure of Scientific Revolutions he was accused of promoting an “irrationalist” account of science. Although it has since been argued that this charge is unfair in one aspect or another, the early criticism still exerts an influence on our understanding of Kuhn. In particular, normal science is often characterized as dogmatic and uncritical, even by commentators sympathetic to Kuhn. I argue not only that there is no textual evidence for this view but also that normal science is much better understood as being based on epistemically justified commitment to a paradigm and as pragmatic in its handling of anomalies. I also argue that normal science is an example of what I call Kuhn’s program of revisionary rational reconstruction.

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Research Mon, 01 Apr 2024 20:43:24 +0200 f2f87cd8-5056-4887-9907-86ba083da0bd
<![CDATA[Predicting and describing the use of generative AI in science-related information search]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=5e39a572-3892-467e-b8e6-be6d80e85064&tx_pure_pure5%5BshowType%5D=pub&cHash=1cbf519499bb5854001e975cacc6e8e4 Greussing, E., Guenther, L., Baram-Tsabari, A., et al. Research Mon, 01 Apr 2024 20:43:24 +0200 5e39a572-3892-467e-b8e6-be6d80e85064 <![CDATA[Using Reference Publication Year Spectroscopy (RPYS) to analyze the research and publication culture in immunology]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=a8618d99-6427-43e7-ae30-f023f3bd86ea&tx_pure_pure5%5BshowType%5D=pub&cHash=c44e2e8831a80d7453052d578de9d836 Wray, K. B., Paludan, S. R., Bornmann, L., Haunschild, R. Research Sat, 01 Jun 2024 20:43:24 +0200 a8618d99-6427-43e7-ae30-f023f3bd86ea <![CDATA[Fysikerne mellem videnskab og politik]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=16c022eb-296c-420d-836d-73d01fa279ad&tx_pure_pure5%5BshowType%5D=pub&cHash=e10a008f317179433b7fb1c0cf931eda Nielsen, H., Andersen, C. Communication Mon, 01 Apr 2024 20:43:24 +0200 16c022eb-296c-420d-836d-73d01fa279ad <![CDATA[Correction to]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=44ab0949-a3b9-4cac-8bc3-75a1dc426fd4&tx_pure_pure5%5BshowType%5D=pub&cHash=b15180845cb6ed3644d3f7d95231b469 Bornmann, L., Wray, K. B., Haunschild, R. In Bornmann, Wray, and Haunschild (2020, p. 1059), the term “like” was inadvertently included in the list of uncertainty terms. We did not use the term “like” for detection of uncertainty, and we did not intend to do so. The correct sentence should read: ‘The final set is as follows: “may”, “could”, “questions”, “might”, “potential”, “seems”, “perhaps”, “likely”, and “sometimes”.’ We apologize for any confusion this mistake might have caused.

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Research Tue, 01 Sep 2020 20:43:24 +0200 44ab0949-a3b9-4cac-8bc3-75a1dc426fd4
<![CDATA[Adapting to change: transforming research libraries into catalysts for citizen science in a rapidly evolving world]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=151a1120-eff7-4952-bde1-98a8f36d535b&tx_pure_pure5%5BshowType%5D=pub&cHash=131160ec49863bd71eaf614e13ba7fbb Nielsen, K. H., Kaarsted, T., Overgaard, A. K., Okholm, A. L., Martek, A. Research Mon, 01 Jan 2024 20:43:24 +0100 151a1120-eff7-4952-bde1-98a8f36d535b <![CDATA[Forskere mod abort]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=4aded3ad-b310-49f9-bdd1-dd92b55dedf6&tx_pure_pure5%5BshowType%5D=pub&cHash=482861b4c52be424b49d1c38db0e7a40 Nielsen, K. H. Communication Fri, 15 Mar 2024 20:43:24 +0100 4aded3ad-b310-49f9-bdd1-dd92b55dedf6 <![CDATA[Problemet med Central Park]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=cbe44b79-768a-4e21-8a48-e7cca181c302&tx_pure_pure5%5BshowType%5D=pub&cHash=785c5ee12d13d1ff7bb9d2a261b1277d Nielsen, K. H. Communication Wed, 27 Mar 2024 20:43:24 +0100 cbe44b79-768a-4e21-8a48-e7cca181c302 <![CDATA[To the discerning reader: Galileo's philosophical comedy in a new translation]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=6d95171c-742e-4e76-a7dd-54df6605c2d5&tx_pure_pure5%5BshowType%5D=pub&cHash=4bb2811a4d51a69d140eb78d8df1dcc7 Nielsen, K. Communication Sun, 24 Mar 2024 20:43:24 +0100 6d95171c-742e-4e76-a7dd-54df6605c2d5 <![CDATA[Single, double and triple ionization of Ne, Ar, Kr and Xe by 30-1000 keV p<sup>-</sup> impact]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=cac62833-d0a1-478e-b0d6-83f5cbf5144b&tx_pure_pure5%5BshowType%5D=pub&cHash=89ec3e6689a2ed1abadaf5e6dd3e9586 Paludan, K., Bluhme, H., Knudsen, H., et al. Experimental data for single, double and triple ionization of Ne, Ar, Kr and Xe by 30-1000 keV antiproton impact are presented and compared with existing proton data. It is found that the current phenomenological understanding of ionization developed from studies of light targets generally apply to heavy atomic targets as well. Inner-shell ionization followed by Auger decay is found to be an important channel for multiple ionization of the heaviest targets, and the projectile charge dependence of their multiple ionization cross sections must be understood as stemming from the underlying inner-shell ionization cross sections.

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Research Sun, 14 Sep 1997 20:43:24 +0200 cac62833-d0a1-478e-b0d6-83f5cbf5144b
<![CDATA[Experimental investigation of photon multiplicity and radiation cooling for 150 GeV electrons/positrons traversing diamond and Si crystals]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=ab573d54-4bd3-4dc2-8d44-444e63ba256a&tx_pure_pure5%5BshowType%5D=pub&cHash=af5e574afb68fc900310ca1570e62eb2 Kirsebom, K., Medenwaldt, R., Mikkelsen, U., et al. Detailed experimental investigations of photon multiplicities for 150 GeV electrons/positrons traversing thin diamond and Si crystals have been performed. Along axial directions up to 10 photons are emitted in 1.5 mm diamond for a radiative energy loss larger than 4 GeV. This corresponds to a mean free path for photon emission of about two orders of magnitude shorter than in an amorphous target. This is in agreement with an enhanced radiative energy loss of ∼30 times that in amorphous targets. The strongly enhanced photon emission leads to radiation cooling which can result in particles exiting the crystal with a reduced angle to the axis. For incidences along planar directions the average multiplicity is still above one, even for the thinnest crystals used in the present experiment, so a single-photon spectrum can only be obtained for thicknesses ≤50 μm, which, on the other hand, is comparable to the coherence lengths for GeV photons, leading to destruction of the coherent effects.

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Research Tue, 01 Oct 1996 20:43:24 +0200 ab573d54-4bd3-4dc2-8d44-444e63ba256a
<![CDATA[Ionization in collisions between 30-1000 keV antiprotons and atomic hydrogen]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=3e7c3cba-28c5-43d4-a128-992b9d5e0aad&tx_pure_pure5%5BshowType%5D=pub&cHash=bfbac9dc3950afb8d96a7ad8d9c217d6 Paludan, K., Charlton, M., Kirsebom, K., et al. Recently published data for impact of antiprotons in the energy range 30-1000 keV on atomic hydrogen are compared with analogous proton, electron, and positron measurements, and it is found that the ionization cross sections of atomic hydrogen follow the same pattern as similar cross sections obtained on He and H2 targets, in accordance with the general phenomenological description of single ionization that has developed over the last decade. Further comparisons are made with various recent and advanced theoretical calculations for antiproton ionization of atomic hydrogen. These theoretical results agree well with the data obtained, but for lower impact energies the different methods do not, despite the simplicity of the system, agree on predicting even the form of the cross section.

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Research Mon, 01 Jan 1996 20:43:24 +0100 3e7c3cba-28c5-43d4-a128-992b9d5e0aad
<![CDATA[Ionization of rare gases by particle-antiparticle impact]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=77219248-3530-4d03-9032-28b769e5fb9e&tx_pure_pure5%5BshowType%5D=pub&cHash=8297274f8b866da934cd73b74fdba5c2 Paludan, K., Laricchia, G., Ashley, P., et al. New data for single and double ionization of the rare gases Ne, Ar, Kr and Xe, by positron and antiproton impact are presented and compared with existing data for electron and proton impact. It is found that the current understanding of these processes obtained from studies involving low-Z targets only extends to high-Z atoms provided that certain target-dependent effects are taken into consideration. In particular, the static interaction between the projectile and the undistorted target is found to play a crucial role in the case of the lighter projectiles.

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Research Sun, 14 Sep 1997 20:43:24 +0200 77219248-3530-4d03-9032-28b769e5fb9e
<![CDATA[Ionization of atomic hydrogen by 30-1000 keV antiprotons]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=10a12f2c-a628-417e-8507-eee93ceaa0b2&tx_pure_pure5%5BshowType%5D=pub&cHash=893550aaca2601f092b7be532dd566cb Knudsen, H., Mikkelsen, U., Paludan, K., et al. Ionization in collisions between antiprotons and atomic hydrogen is perhaps the least complicated and most fundamental process that can be treated by atomic-collision theory. We present measurements of the ionization cross section for 30-1000 keV antiprotons colliding with atomic hydrogen.

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Research Sun, 01 Jan 1995 20:43:24 +0100 10a12f2c-a628-417e-8507-eee93ceaa0b2
<![CDATA[One and two electron processes in fast collisions between protons and hydrogen molecules]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=a7e41f1e-6f3b-4486-a036-d932743adbda&tx_pure_pure5%5BshowType%5D=pub&cHash=a7aa53b3a943e81237807de083d10da5 Ben-Itzhak, I., Krishnamurthi, V., Carnes, K. D., Aliabadi, H., Knudsen, H., Mikkelsen, U. The ratio of double to single ionization of hydrogen molecules caused by fast proton impact was measured over a wide velocity range (v = 6-24 a.u.) using the coincidence time-of-flight technique. This ratio, ∼ 0.13% at high velocities, is about a factor of 2 smaller than the same ratio for the He target. This difference is due mainly to the larger single ionization cross section for hydrogen molecules, i.e. σ+(H2) ∼ 2 σ+(He). The double ionization cross section, on the other hand, is similar for both He and H2. Furthermore, the ratio of double to single ionization of the hydrogen molecule by proton impact is smaller than the one caused by electron impact at the same velocity in a similar way as for the helium target.

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Research Fri, 05 May 1995 20:43:24 +0200 a7e41f1e-6f3b-4486-a036-d932743adbda
<![CDATA[Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=320f6806-53ce-4b29-8e92-17e1a5638d5b&tx_pure_pure5%5BshowType%5D=pub&cHash=9d6e3d74009b484087a763ba9e170d99 Møller, S. P., Uggerhøj, E., Bluhme, H., et al. The first direct measurements of antiproton stopping powers around the stopping power maximum are presented. The LEAR antiproton-beam of 5.9 MeV is degraded to 50-700 keV, and the energy-loss is found by measuring the antiproton velocity before and after the target. The antiproton stopping powers of Si and Au are found to be reduced by 30 and 40% near the electronic stopping power maximum as compared to the equivalent proton stopping power. The Barkas effect, that is the stopping power difference between protons and antiprotons, is extracted and compared to theoretical estimates.

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Research Wed, 01 Jan 1997 20:43:24 +0100 320f6806-53ce-4b29-8e92-17e1a5638d5b
<![CDATA[Ionization of helium and molecular hydrogen by slow antiprotons]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=a9f27e75-1db3-4d32-b8e0-b099a77d6822&tx_pure_pure5%5BshowType%5D=pub&cHash=8108abe71b201b65c486f8d036959b8b Hvefplund, P., Knudsen, H., Mikkelsen, U., et al. Measurements of the cross sections for single and double ionization or helium as well as for the creation of H+2 and H+ ions from H2 for impact of antiprotons in the energy range 13-500 keV are presented. The results are compared with our earlier, less accurate data and with data for equivelocity proton impact. The single ionization cross section of helium agrees remarkably well with a continuum distorted wave (CDW-EIS) calculation. The ratio between the double and the single ionization cross sections of helium increases dramatically with decreasing projectile energy. New theoretical calculations are called for.

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Research Mon, 14 Mar 1994 20:43:24 +0100 a9f27e75-1db3-4d32-b8e0-b099a77d6822
<![CDATA[Non-dissociative single ionization of molecular hydrogen by electron and positron impact]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=38e3dc4e-fe20-4777-904c-ea237f67fcf9&tx_pure_pure5%5BshowType%5D=pub&cHash=70fcd222dcb83912903443d80d09b723 Jacobsen, F. M., Frandsen, N. P., Knudsen, H., Mikkelsen, U. Present experimental results for impact ionization of molecular hydrogen by electrons and positrons for the range of impact energies from threshold to about 2 keV (0.42 keV for e). Our electron data agree with the most recent ones measured by others. When we compare our positron results to earlier published single ioniznrion cross sections we find significant differences for impact energies from threshold to about 100 eV with the new cross sections being substantially smaller. In the present study an effort has been made to discriminate against false signals caused by pasitronium formation and other effects.

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Research Tue, 14 Nov 1995 20:43:24 +0100 38e3dc4e-fe20-4777-904c-ea237f67fcf9
<![CDATA[Non-dissociative and dissociative ionization of O<sub>2</sub> molecules by impact of 40-1000 keV antiprotons]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=780adb06-632d-4a0f-8343-c500e4c25fc4&tx_pure_pure5%5BshowType%5D=pub&cHash=f528338a48c5d91a946ca3c102f16e27 Bluhme, H., Knudsen, J., Mikkelsen, U., et al. The non-dissociative single-ionization cross section for 40-1000 keV antiproton impact on O2 molecules has been measured. Furthermore, the ratio between the production of O+ and O2+ ions was obtained. The experimental results agree qualitatively with similar data obtained previously for other molecular targets, and support the 'standard picture' of ionization that has emerged during the last decade after much experimental as well as theoretical work on ionization caused by particles and their antiparticles.

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Research Wed, 01 Jan 1997 20:43:24 +0100 780adb06-632d-4a0f-8343-c500e4c25fc4
<![CDATA[Ionization and excitation of hydrogen molecules by fast proton impact]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=b0abd31f-2708-4dc5-913f-9c166f6fca81&tx_pure_pure5%5BshowType%5D=pub&cHash=ed05c81d8bf3e9749f034ad6ec025d5c Ben-Itzhak, I., Krishnamurthi, V., Carnes, K. D., et al. The ratio of ionization-excitation to single ionization of hydrogen molecules caused by fast proton impact was measured over a wide velocity range (v = 6-24 au) using the coincidence time-of-flight technique. This ratio, approx. 2%, is independent of the collision velocity at high velocities. It differs from the ratio of total H+ to H2+ production mostly due to a large contribution from the dissociation of the electronic ground state of the molecular ion. The dissociation fraction of H2+ (1sσ) was measured and compares well with our calculations using the Franck-Condon approximation.

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Research Mon, 01 Jan 1996 20:43:24 +0100 b0abd31f-2708-4dc5-913f-9c166f6fca81
<![CDATA[Direct measurements of the stopping power for antiprotons of light and heavy targets]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=2013601d-adde-42bd-a5f4-67be79897957&tx_pure_pure5%5BshowType%5D=pub&cHash=3c924e80f572de084aaa11d6367dd768 Møller, S. P., Uggerhøj, E., Bluhme, H., et al. Measurements of antiproton stopping powers around the stopping-power maximum are presented for targets of Al, Si, Ti, Cu, Ag, Ta, Pt, and Au. The Low Energy Antiproton Ring antiproton beam of 5.9 MeV is degraded to 50–700 keV, and the energy loss is found by measuring the antiproton velocity before and after the target. Target thicknesses have been determined accurately by weighing and Rutherford backscattering techniques. The antiproton stopping powers are found to be reduced by around 35% for both light and heavy elements near the electronic stopping-power maximum as compared to the equivalent proton stopping power. The antiproton stopping powers and the Barkas effect; that is, the difference in stopping power between protons and antiprotons is compared to theoretical estimates, based on a harmonic-oscillator model and an electron-gas model, and good agreement is obtained.

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Research Wed, 01 Jan 1997 20:43:25 +0100 2013601d-adde-42bd-a5f4-67be79897957
<![CDATA[Electron capture and ionization of 33-TeV Pb ions in gas targets]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=35ca651f-f84c-4c97-87b8-94ff3dafa553&tx_pure_pure5%5BshowType%5D=pub&cHash=40aa9cb1d6afb33d63f198df9250502c Krause, H. F., Vane, C. R., Datz, S., et al. The total cross sections for electron capture and ionization of 33-TeV Pb ions in argon, krypton and xenon gas targets were measured. Electron capture from pair production dominates the total capture cross sections. The ionization cross sections from capture experiment (growth) and ionization experiment (decay) curves were compared. The results depicted the effective ionization cross sections in solid targets to be 25% larger than in gases for ionization experiment.

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Research Thu, 01 Mar 2001 20:43:25 +0100 35ca651f-f84c-4c97-87b8-94ff3dafa553
<![CDATA[Månefeber]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=fc27bda1-d677-4747-8594-9e65a3366206&tx_pure_pure5%5BshowType%5D=pub&cHash=7d866d312b2b5d6a248b53315f64327b Nielsen, K. H. Communication Fri, 02 Feb 2024 20:43:25 +0100 fc27bda1-d677-4747-8594-9e65a3366206 <![CDATA[Professorens prutter]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=b66a0219-fe95-41fe-ab77-8b9f3a16f780&tx_pure_pure5%5BshowType%5D=pub&cHash=1eb83f26b9ea83a1fd789864de68bc71 Nielsen, K. H. Communication Fri, 16 Feb 2024 20:43:25 +0100 b66a0219-fe95-41fe-ab77-8b9f3a16f780 <![CDATA[Scientific and philosophical publication]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=1acf2529-a4ec-4e17-8528-c793836bbf0d&tx_pure_pure5%5BshowType%5D=pub&cHash=5b6358790e5cc11dcbc4587a688fae30 Wray, K. B. Research Fri, 01 Mar 2024 20:43:25 +0100 1acf2529-a4ec-4e17-8528-c793836bbf0d <![CDATA[Predictivism and avoidance of ad hoc-ness: an empirical study]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=d99ff957-2316-4547-8850-7a47c54da211&tx_pure_pure5%5BshowType%5D=pub&cHash=85f4913e3c2cb78eae898e8feda7e469 Schindler, S. Predictivism is the thesis that evidence successfully predicted by a scientific theory counts more (or ought to count more) in the confirmation of that theory than already known evidence would. One rationale that has been proposed for predictivism is that predictive success guards against ad hoc hypotheses. Despite the intuitive attraction of predictivism, there is historical evidence that speaks against it. As valuable as the historical evidence may be, however, it is largely indirect evidence for the epistemic attitudes of individual – albeit prominent – scientists. This paper presents the results of an empirical study of scientists’ attitudes toward predictivism and ad hoc-ness (n = 492), which will put the debate on a more robust empirical footing. The paper also draws attention to a tension between the ad hoc-ness avoidance rationale of predictivism and the ways philosophers have spelled out the notion of ad hoc-ness.

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Research Mon, 01 Apr 2024 20:43:25 +0200 d99ff957-2316-4547-8850-7a47c54da211
<![CDATA[Beyond Footnotes: Lakatos's meta-philosophy and the history of science]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=71392d21-300e-4e97-907d-537db16b9f71&tx_pure_pure5%5BshowType%5D=pub&cHash=70571704d3bb3aa32cfce75b9275411a Schindler, S. Research Mon, 01 Jan 2024 20:43:25 +0100 71392d21-300e-4e97-907d-537db16b9f71 <![CDATA[AI kan få forskningen ud af elfenbenstårnet – men også misinformere masserne]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=60d424ff-47b9-4885-a5d8-bc8dce5641f3&tx_pure_pure5%5BshowType%5D=pub&cHash=6966dbba07ab798e734998e160d480a0 Fuglsang, S., Fage-Butler, A., Nielsen, K. H. Communication Thu, 18 Jan 2024 20:43:25 +0100 60d424ff-47b9-4885-a5d8-bc8dce5641f3 <![CDATA[Uro i sindet]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=db516c58-7d12-4808-91ff-c6db2881a1ed&tx_pure_pure5%5BshowType%5D=pub&cHash=fae68bfa47551663aac805ef0d2aecff Nielsen, K. H. Communication Fri, 05 Jan 2024 20:43:25 +0100 db516c58-7d12-4808-91ff-c6db2881a1ed <![CDATA[En slagplan mod wokeness]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=60c845dd-b7f5-4f91-8555-e586675d6a30&tx_pure_pure5%5BshowType%5D=pub&cHash=1c0449fa030b5d076a1830578379bfb9 Nielsen, K. H. Communication Fri, 12 Jan 2024 20:43:25 +0100 60c845dd-b7f5-4f91-8555-e586675d6a30 <![CDATA[Editorial]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=92fe28a7-0385-43c6-a2b4-652be5ff7139&tx_pure_pure5%5BshowType%5D=pub&cHash=22c92ddf49f782484dda1de7c1e86272 Boschiero, L., Wray, K. B. Research Sun, 01 Mar 2015 20:43:25 +0100 92fe28a7-0385-43c6-a2b4-652be5ff7139 <![CDATA[David Oldroyd 1936–2014]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=15ff2aa6-6a9c-46e9-9d88-2856a8c9a8cf&tx_pure_pure5%5BshowType%5D=pub&cHash=3828e5b87e3a2d451528eca6ede6a9eb Boschiero, L., Wray, K. B. Research Sun, 01 Mar 2015 20:43:25 +0100 15ff2aa6-6a9c-46e9-9d88-2856a8c9a8cf <![CDATA[Metascience]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=9142e1c4-de2e-4051-8a91-8e201f0394cb&tx_pure_pure5%5BshowType%5D=pub&cHash=fc609b5b61d9230da66592f887857379 Boschiero, L., Wray, K. B. Research Fri, 01 Jul 2016 20:43:25 +0200 9142e1c4-de2e-4051-8a91-8e201f0394cb <![CDATA[Supporting the “metascientific” community]]> https://css.au.dk/en/publications?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=5ada28b5-4aa0-4e53-aa3f-171f70fac781&tx_pure_pure5%5BshowType%5D=pub&cHash=9284a1a0ea13885ae0db2b962c8fe1a4 Boschiero, L., Wray, K. B. Research Sun, 01 Nov 2015 20:43:25 +0100 5ada28b5-4aa0-4e53-aa3f-171f70fac781