Thermal bremsstrahlung probing the thermodynamical state of multifragmenting systems

0185289 - UJF-V 20010016 RIV NL eng J - Journal Article
d'Enteria, 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. - 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. 291C-294C. ISSN 0375-9474. E-ISSN 1873-1554
R&D Projects: GA AV ČR KSK1048102
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 2.074, year: 2001

Inclusive and exclusive hard-photon (E-gamma)30 MeV) production in five different heavy-ion reactions (Ar-36+Au-197,Ag-107, Ni-58, C-12 at 60 AMeV and Xe-129+Sn-120 at 50A MeV) has been studied 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 f or roughly 20 % of the total hard-photon yield. The therm al slopes are a direct measure of the temperature of the excited nuclear systems produced during the reaction.
Permanent Link: http://hdl.handle.net/11104/0081696