Asymmetry Dependence of the Nuclear Caloric Curve
Abstract
A basic feature of the nuclear equation of state is not yet understood: the dependence of the nuclear caloric curve on the neutron-proton asymmetry. Predictions of theoretical models differ on the magnitude and even the sign of this dependence. In this work, the nuclear caloric curve is examined for fully reconstructed quasi-projectiles around mass A=50. The caloric curve extracted with the momentum quadrupole fluctuation thermometer shows that the temperature varies linearly with quasi-projectile asymmetry (N-Z)/A. An increase in asymmetry of 0.15 units corresponds to a decrease in temperature on the order of 1 MeV. These results also highlight the importance of a full quasi-projectile reconstruction in the study of thermodynamic properties of hot nuclei.
Keywords
Cite
@article{arxiv.1208.4887,
title = {Asymmetry Dependence of the Nuclear Caloric Curve},
author = {Alan B. McIntosh and Aldo Bonasera and Paul Cammarata and Kris Hagel and Lauren Heilborn and Zachary Kohley and Justin Mabiala and Larry W. May and Paola Marini and Andrew Raphelt and George A. Souliotis and Sara Wuenschel and Andrew Zarrella and Sherry J. Yennello},
journal= {arXiv preprint arXiv:1208.4887},
year = {2013}
}