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16 April 2024

» arxiv » nucl-ex/0007006

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Thermal bremsstrahlung probing the thermodynamical state of multifragmenting systems
D.G. d’Enterria ; L. Aphecetche ; A. Chbihi ; H. Delagrange ; J. D’{i}az ; M.J. van Goethem ; M. Hoefman ; H. Huisman ; A. Kugler ; H. Loehner ; G. Mart’{i}nez ; R. Ortega ; R. Ostendorf ; S. Schadmand ; Y. Schutz ; R. Siemssen ; D. Stracener ; P. Tlusty ; R. Turrisi ; M. Volkerts ; V. Wagner ; H. Wilschut ; N. Yahlali ;
Date:	6 Jul 2000
Journal:	Nucl.Phys. A681 (2001) 291-294
Subject:	nucl-ex
Abstract:	Inclusive and exclusive hard-photon (E$_gamma >$ 30 MeV) production in five different heavy-ion reactions ($^{36}$Ar+$^{197}$Au, $^{107}$Ag, $^{58}$Ni, $^{12}$C at 60{it A} MeV and $^{129}$Xe+$^{120}$Sn at 50{it A} 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 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.
Source:	arXiv, nucl-ex/0007006
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