Influence of Thermal Radiation on Hot Cluster Decay Rates and Abundances

作     者：Klavs Hansen P. Ferrari Klavs Hansen;P. Ferrari

作者机构：Center for Joint Quantum Studies and Department of Physics Tianjin University Tianjin 300072 China Department of Physics Gothenburg University Gothenburg 41296 Sweden Laboratory of Solid State Physics and Magnetism KU Leuven Leuven 3001 Belgium 

出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)

年 卷 期：2019年第32卷第2期

页      面：167-174,I0002页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

主　　题：Clusters Thermal radiation Abundances Decay rates 

摘      要：The influence of radiative cooling on the unimolecular decay rates of free, hot clusters and molecules with unspecified excitation energies is quantified. Two different regimes, dedined by the magnitude of the energy of the photons emitted, are identified and the boundary between them is given. The boundary is determined in terms of the photon emission rate constants and thermal properties of the particles. Also the abundance spectra are calculated for the continuous cooling case, corresponding to small photon energies. The two regimes correspond to continuous cooling and single photon quenching of the unimolecular decay. The radiative effect can be parametrized by a redefinition of the time each individual cluster has available to undergo evaporation, expressed by an effective radiative time constant.