论文标题
突然状态下的激光核核相互作用
Laser-nucleus interactions in the sudden regime
论文作者
论文摘要
理论上研究了中等重量核与MEV光子强的激光脉冲之间的相互作用。光子的多重吸收与核平衡竞争。我们调查突然的政权。这里的光子吸收速率是如此之强，以至于每个光子吸收过程后没有时间完全平衡核。我们按照一组速率方程式遵循系统的时间演变。这些解释了偶极子的吸收和诱导的偶极发射，平衡（以残留核相互作用耦合的粒子孔状态建模）和中子衰减（填充了富含质子的核的链链）。将我们的结果与较早的工作进行比较，该工作解决了平衡是瞬时的绝热状态。我们预测中子蒸发达到的激发程度和核的范围。这些发现与计划未来实验有关。
The interaction between medium-weight nuclei and a strong zeptosecond laser pulse of MeV photons is investigated theoretically. Multiple absorption of photons competes with nuclear equilibration. We investigate the sudden regime. Here the rate of photon absorption is so strong that there is no time for the nucleus to fully equilibrate after each photon absorption process. We follow the temporal evolution of the system in terms of a set of rate equations. These account for dipole absorption and induced dipole emission, equilibration (modeled in terms of particle-hole states coupled by the residual nuclear interaction), and neutron decay (populating a chain of proton-rich nuclei). Our results are compared with earlier work addressing the adiabatic regime where equilibration is instantaneous. We predict the degree of excitation and the range of nuclei reached by neutron evaporation. These findings are relevant for planning future experiments.
