Výsledky vyhledávání - "J U Andersen"

Equivalence Between Self-energy and Self-mass in Classical Electron Model

Publikováno v: Khokonov, M K & Andersen, J U 2019, ' Equivalence Between Self-energy and Self-mass in Classical Electron Model ', Foundations of Physics, vol. 49, no. 7, pp. 750-782 . https://doi.org/10.1007/s10701-019-00279-7

A cornerstone of physics, Maxwell‘s theory of electromagnetism, apparently contains a fatal flaw. The standard expressions for the electromagnetic field energy and the self-mass of an electron of finite extension do not obey Einstein‘s famous equ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::986815e64eedc4e4bb72025657c48759
https://doi.org/10.1007/s10701-019-00279-7

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Photo excitation and laser detachment of C60 − anions in a storage ring

Autor: J. U. Andersen, Kristian Støchkel

Publikováno v: Støchkel, K & Andersen, J U 2013, ' Photo excitation and laser detachment of C 60 − anions in a storage ring ', Journal of Chemical Physics, vol. 139 . https://doi.org/10.1063/1.4826097

We have studied the photo physics of C60 − anions in the electrostatic storage ring ELISA with ions produced in a plasma source and cooled and bunched in a He filled ion trap. A previous study using delayed electron detachment as a signal of resona

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a70b11c3a9dd2ffcbe4583e669970ca4
https://pure.au.dk/portal/da/publications/photo-excitation-and-laser-detachment-of-c60--anions-in-a-storage-ring(bb5958f2-11d4-4003-b4ac-3a97011771aa).html

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Line shifts of channeling radiation from MeV electrons

Autor: Lene Vestergaard Hau, J. U. Andersen

Publikováno v: Radiation Effects and Defects in Solids. 125:75-80

Recent progress in the evaluation of higher-order corrections to the continuum-model description of channeling radiation from MeV electrons is discussed. The most important corrections are found from thermal scattering, and to second order in a time-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c48e9aee5f8beff8e0c991a45a743482
https://doi.org/10.1080/10420159308225484

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Absolute cooling rates of freely decaying fullerenes

Autor: Haruo Shiromaru, J. U. Andersen, H. Tanuma, Jun Matsumoto, M. Goto, Sophie E. Canton, T. Azuma, Klavs Hansen, A. E. K. Sundén

Publikováno v: Physical Review Letters
Sundén, A E K, Goto, M, Matsumoto, J, Shiromaru, H, Tanuma, H, Azuma, T, Andersen, J U, Canton, S E & Hansen, K 2009, ' Absolute Cooling Rates of Freely Decaying Fullerenes ', Physical Review Letters, vol. 103, no. 14, pp. 143001-. https://doi.org/10.1103/PhysRevLett.103.143001

The cooling rates of C-60(-) have been measured in an electrostatic storage ring between several hundred mu s and several tens of ms with one-photon laser excitation. The absolute energy scale is established by the photon energy, and the cooling time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::667a725a921e138664e483d06cefa697
https://hdl.handle.net/11858/00-001M-0000-002D-8391-B11858/00-001M-0000-002D-838F-6

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Crystal blocking measurements of the time delay of fission induced by 32S, 48Ti, and 58Ni bombardment of W

Autor: J U, Andersen, J, Chevallier, J S, Forster, S A, Karamian, C R, Vane, J R, Beene, A, Galindo-Uribarri, J Gomez, del Campo, H F, Krause, E, Padilla-Rodal, D, Radford, C, Broude, F, Malaguti, A, Uguzzoni

Publikováno v: Physical review letters. 99(16)

The time delay in fission induced by bombardment of W with 180 MeV 32S, 240-255 MeV 48Ti, and 315-375 MeV 58Ni has been measured by observation of crystal blocking. There is a clear narrowing and a small increase in the minimum yield of the angular d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7aeaa8185abc450f47e85b796e5e5020
https://pubmed.ncbi.nlm.nih.gov/17995243

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Crystal blocking measurements of the time delay of fission induced by S, Ti and Ni borbardment of W

Autor: J. U. Andersen, J. Chevallier, J. S. Forster, S. A. Karamian, C. R. Vane, J. R. Beene, A. Galindo Uribarri, J. Gomez del Campo, H. F. Krause, E. Padilla Rodal, D. Radford, C. Broude, MALAGUTI, FRANCO, UGUZZONI, ARNALDO

The time delay in fission induced by bombardment of W with 180 MeV 32S, 240–255 MeV 48Ti, and 315–375 MeV 58Ni has been measured by observation of crystal blocking. There is a clear narrowing and a small increase in the minimum yield of the angul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4094::d9532aeebbdcbcb3a9ddb79a2c49fbcd
http://hdl.handle.net/11585/50984

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Dynamic Jahn-Teller effects in isolated C60- studied by near-infrared spectroscopy in a storage ring

Autor: S, Tomita, J U, Andersen, E, Bonderup, P, Hvelplund, B, Liu, S Brøndsted, Nielsen, U V, Pedersen, J, Rangama, K, Hansen, O, Echt

Publikováno v: Physical review letters. 94(5)

We have measured the near-infrared absorption spectrum for isolated C60- ions at room temperature. Two bands, at 9145 cm(-1) and 10460 cm(-1), have been identified in addition to the main absorption band at 9382 cm(-1), seen also at low temperature i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::daa7b963160ec1397249abc6319e153c
https://pubmed.ncbi.nlm.nih.gov/15783634

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Photodestruction of adenosine 5'-monophosphate (AMP) nucleotide ions in vacuo: statistical versus nonstatistical processes

Autor: S, Brøndsted Nielsen, J U, Andersen, J S, Forster, P, Hvelplund, B, Liu, U V, Pedersen, S, Tomita

Publikováno v: Physical review letters. 91(4)

The lifetimes of both deprotonated adenosine 5(')-monophosphate (AMP) and protonated AMP, after 266-nm photon absorption and intramolecular vibrational redistribution, were determined to be 16 micros based on a newly developed heavy-ion storage ring

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::5fe4ac54fe233d3c1dbba9bd158f6a06
https://pubmed.ncbi.nlm.nih.gov/12906699

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