Study of thermometers for measuring a microcanonical phase transition in nuclear fragmentation

Details Study of thermometers for measuring a microcanonical phase transition in nuclear fragmentation Study of thermometers for measuring a microcanonical phase transition in nuclear fragmentation

1999-01-08

arxiv.org/abs/nucl-th/9901017v1

Nucl.Phys. A657 (1999) 446-456

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1016/S0375-9474(99)00337-1

The aim of this work is to study how the thermodynamic temperature is related to the known thermometers for nuclei especially in view of studying the microcanonical phase transition. We find within the MMMC-model that the "S-shape" of the caloric equation of state e^*(T) which is the signal of a phase transition in a system with conserved energy, can be seen in the experimentally accessible slope temperatures T_slope for different particle types and also in the isotopic temperatures T_He-Li. The isotopic temperatures T_H-He are weaker correlated to the shape of the thermodynamic temperature and therefore are less favorable to study the signal of a microcanonical phase transition. We also show that the signal is very sensitive to variations in mass of the source.

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