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arXiv 0903.1772nucl-ex
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核热量曲线的同位素依赖性

Isotopic Dependence of the Nuclear Caloric Curve

The ALADIN2000 Collaboration, C. Sfienti, P. Adrich, T. Aumann, C. O. Bacri, T. Barczyk, R. Bassini, S. Bianchin, C. Boiano, A. S. Botvina, A. Boudard, J. Brzyc… 展开作者

The ALADIN2000 Collaboration, C. Sfienti, P. Adrich, T. Aumann, C. O. Bacri, T. Barczyk, R. Bassini, S. Bianchin, C. Boiano, A. S. Botvina, A. Boudard, J. Brzychczyk, A. Chbihi, J. Cibor, B. Czech, M. De Napoli, J. -E. Ducret, H. Emling, J. D. Frankland, M. Hellstroem, D. Henzlova, G. Imme, I. Iori, H. Johansson, K. Kezzar, A. Lafriakh, A. Le Fevre, E. Le Gentil, Y. Leifels, J. Luehning, J. Lukasik, W. G. Lynch, U. Lynen, Z. Majka, M. Mocko, W. F. J. Mueller, A. Mykulyak, H. Orth, A. N. Otte, R. Palit, P. Pawlowski, A. Pullia, G. Raciti, E. Rapisarda, H. Sann, C. Schwarz, H. Simon, K. Suemmerer, W. Trautmann, M. B. Tsang, G. Verde, C. Volant, M. Wallace, H. Weick, J. Wiechula, A. Wieloch, B. Zwieglinski

摘要:

本文用SIS的ALADIN前向谱仪研究了相对论能区的A/Z关系。为了探索广泛的同位素组成,使用了稳定的124 Sn束和每核子600 MeV的124 La和107 Sn的放射性核束。化学冻结温度被发现是几乎不变的相对于所产生的观众源的A/Z,与预测的扩展系统一致。小库仑效应(ΔT \approx 0.6 MeV)出现在多重碎裂开始附近的残留物产生。

英文摘要:

The A/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of 124Sn and radioactive beams of 124La and 107Sn at 600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. Chemical freeze-out temperatures are found to be nearly invariant with respect to the A/Z of the produced spectator sources, consistent with predictions for expanded systems. Small Coulomb effects (ΔT \approx 0.6 MeV) appear for residue production near the onset of multifragmentation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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