Linewidth and lifetime of atomic levels and the time evolution of spectra and coincidence spectra
Linewidth and lifetime of atomic levels and the time evolution of spectra and coincidence spectra
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DOI：
10.1103/physreva.81.032511
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发表时间：
2010-03
影响因子：
2.9
通讯作者：
Y. Chiang;P. V. Demekhin;A. Kuleff;S. Scheit;L. Cederbaum
中科院分区：
文献类型：
--
作者：
Y. Chiang;P. V. Demekhin;A. Kuleff;S. Scheit;L. Cederbaum
讨论了原子级联衰变过程的含时理论。我们表明，测量发射粒子(电子或光子)的光谱作为时间的函数是有用的，并引入含时光谱和含时符合谱。分析表明，在原子级联和各自的光谱中有几个时间尺度。这项工作为分子、星团和固体的讨论奠定了基础，在分子、星团和固体中，核动力学强烈地参与了级联衰变过程，使其变得更加复杂。
The time-dependent theory of an atomic cascade decay process is discussed. We show that it is useful to measure the spectra of the emitted particles (electrons or photons) as a function of time and introduce time-dependent spectra and time-dependent coincidence spectra. The analysis reveals that there are several timescales involved in the atomic cascades and in the respective spectra. The work prepares the ground for the discussion of molecules, clusters, and solids, where the nuclear dynamics strongly participate in the cascade decay process making it much more complex.