标题： 超常相变周围的热裂变率 显示英文标题

标题： Thermal fission rate around super-normal phase transition

摘要： 使用兰格的$Im F$方法，我们讨论了在耗散环境存在下核裂变宽度的温度依赖性。 我们向环境振子的谱密度引入一个低截止频率，以模拟配对间隙。 结果表明，在临界温度处衰变宽度迅速减小，此时发生从超流体到正常流体的相变。 讨论了与最近观察到的耗散裂变阈值的关系。 显示英文摘要

摘要： Using Langer's $Im F$ method, we discuss the temperature dependence of nuclear fission width in the presence of dissipative environments. We introduce a low cut-off frequency to the spectral density of the environmental oscillators in order to mimic the pairing gap. It is shown that the decay width rapidly decreases at the critical temperature, where the phase transition from super to normal fluids takes place. Relation to the recently observed threshold for the dissipative fission is discussed.