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Caloric curve of 8 GeV/c negative pion and antiproton + Au reactions

Abstract : The relationship between nuclear temperature and excitation energy of hot nuclei formed by 8 GeV/c negative pion and antiproton beams incident on 197Au has been investigated with the ISiS 4-pidetector array at the BNL AGS accelerator. The double-isotope-ratio technique was used to calculate the temperature of the hot system. The two thermometers used (p/d-3He/4He) and (d/t-3He/4He) are in agreement below E*/A ~ 7 MeV when corrected for secondary decay. Comparison of these caloric curves to those from other experiments shows some differences that may be attributable to instrumentation and analysis procedures. The caloric curves from this experiment are also compared with the predictions from the SMM multifragmentation model.
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Submitted on : Friday, November 27, 2009 - 1:41:17 PM
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A. Ruangma, R. Laforest, E. Martin, E. Ramakrishnan, D. J. Rowland, et al.. Caloric curve of 8 GeV/c negative pion and antiproton + Au reactions. Physical Review C, American Physical Society, 2001, 66, pp.044603. ⟨10.1103/PhysRevC.66.044603⟩. ⟨in2p3-00436630⟩



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