首页> 外文会议>Latin American Symposium on Nuclear Physics and Applications >The Statistical Multifragmentation Model: Origins and Recent Advances
【24h】

The Statistical Multifragmentation Model: Origins and Recent Advances

机译:统计多重标记模型:起源和最近的进展

获取原文

摘要

We review the Statistical Multifragmentation Model (SMM) which considers a generalization of the liquid-drop model for hot nuclei and allows one to calculate thermodynamic quantities characterizing the nuclear ensemble at the disassembly stage. We show how to determine probabilities of definite partitions of finite nuclei and how to determine, through Monte Carlo calculations, observables such as the caloric curve, multiplicity distributions, heat capacity, among others. Some experimental measurements of the caloric curve confirmed the SMM predictions of over 10 years before, leading to a surge in the interest in the model. However, the experimental determination of the fragmentation temperatures relies on the yields of different isotopic species, which were not correctly calculated in the schematic, liquid-drop picture, employed in the SMM. This led to a series of improvements in the SMM, in particular to the more careful choice of nuclear masses and energy densities, specially for the lighter nuclei. With these improvements the SMM is able to make quantitative determinations of isotope production. We show the application of SMM to the production of exotic nuclei through multifragmentation. These preliminary calculations demonstrate the need for a careful choice of the system size and excitation energy to attain maximum yields.
机译:我们审查了统计多分层模型(SMM),其考虑了热核的液滴模型的概括,并允许人们计算在拆卸阶段表征核合奏的热力学量。我们展示了如何确定有限核的明确分区的概率以及如何通过蒙特卡罗计算确定,观察到的热量曲线,多重分布,热容等。热量曲线的一些实验测量确认了10年前的SMM预测,导致模型兴趣激增。然而,碎裂温度的实验测定依赖于不同同位素物种的产率,其在SMM中使用的示意性液体液滴图像中未正确计算。这导致了SMM的一系列改进,特别是更仔细地选择核心和能量密度,特别是为更轻的细胞核。随着这些改进,SMM能够进行同位素生产的定量测定。我们展示了SMM通过多重沉默应用了外来核的生产。这些初步计算表明需要仔细选择系统尺寸和激发能量以获得最大收益率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号