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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >THE EFFECT OF LARGE ANGULAR MOMENTA ON MULTIFRAGMENTATION OF HOT NUCLEI
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THE EFFECT OF LARGE ANGULAR MOMENTA ON MULTIFRAGMENTATION OF HOT NUCLEI

机译：大角动量对热核素多片段化的影响

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Multifragmentation of highly-excited nuclei with large angular momenta is analyzed as an example of microcanonical thermodynamics. The equipartition of the available phase space under the constraint of a given (large) angular momentum gives interesting new effects which cannot be studied in conventional thermodynamics. It is shown that momentum- and energy distributions of the fragments are considerably changed from the non-rotational case. Especially, a large slope parameter of the kinetic energy distribution is established which is up to ten times larger than the thermodynamic temperature. This, commonly attributed to nonequilibrium effects, can be used to identify high angular momenta. In this way ''nonthermal'' collective motion of nuclear matter (flows) observed in some experiments in which one would not expect any compressions may be understood as fully equilibrized thermal motion under large angular momentum. [References: 36]
机译：分析了大角动量的高激发核的多片段化，作为微经典热力学的一个例子。在给定的（大）角动量的约束下，可用相空间的均分会产生有趣的新效果，这是常规热力学无法研究的。结果表明，与非旋转情况相比，碎片的动量和能量分布发生了很大变化。特别地，建立了动能分布的大斜率参数，该参数比热力学温度大十倍。这通常归因于非平衡效应，可用于识别高角动量。通过这种方式，在某些实验中观察到的核物质（流）的“非热”集体运动，在该实验中，人们不会期望任何压缩可以理解为在大角动量下完全平衡的热运动。 [参考：36]

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