Thermal bremsstrahlung probing the thermodynamical state of multifragmenting systems

0185450 - UJF-V 20010178 RIV NL eng J - Článek v odborném periodiku
D'Enterria, D. G. - Aphecetche, L. - Chbihi, A. - Delagrange, H. - Díaz, J. - van Goethem, M. J. - Hoefman, M. - Huisman, H. - Kugler, Andrej - Löhner, H. - Martínez, G. - Ortega, R. - Ostendorf, R. W. - Schadmand, S. - Schutz, Y. - Siemssen, R. H. - Stracener, D. W. - Tlustý, Pavel - Turrisi, R. - Volkerts, M. - Wagner, Vladimír - Wilschut, H. W. - Yahlali, N.
Thermal bremsstrahlung probing the thermodynamical state of multifragmenting systems.
Nuclear Physics. A. Roč. 681, - (2001), s. 291-294. ISSN 0375-9474. E-ISSN 1873-1554.
[Proceedings of the Catania Topical Conference on Relativistic Ion Studies /3rd./. Acicastello, 22.05.2000-26.05.2000]
Výzkumný záměr: CEZ:AV0Z1048901
Klíčová slova: heavy-ion reactions * thermal bremsstrahlung * nucleon-nucleon collisions
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 2.074, rok: 2001

Inclusive and exclusive hard-photon (E.sub.gamma 30 MeV) production in five different heavy-ion reacitons (.sup.36 Ar+.sup.197 Au, .sup.107 Ag, .sup.58 Ni, .sup.12 C at 60 A MeV and .sup.129 Xe+.sup.120 Sn at 50 A MeV) has been studdied coupling the TAPS photon spectrometer with several charged-particle multidetectors covering more than 80% of 4 pi. The measured spectra, slope parameters and source velocities as well as their target-dependence, confirm the existence of thermal bremsstrahlung emission from secondary nucleon-nucleon collisions that accounts for roughly 20% of the total hard-photon yield. The thermal slopes are a direct measure of the temperature of the excited nuclear systems produced during the reaction.
Trvalý link: http://hdl.handle.net/11104/0081845