Double autoionization of He "2s 2 2p 2 P…
Double autoionization of He "2s 2 2p 2 P…
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DOI：
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发表时间：
2006
影响因子：
2.9
通讯作者：
M. Pindzola;F. Robicheaux;J. Colgan
中科院分区：
文献类型：
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作者：
M. Pindzola;F. Robicheaux;J. Colgan
用非微扰含时密耦合方法计算了He 2s 2 2 p2 P空原子态的双自电离率.将三电子原子的九维波函数展开成耦合球谐函数。含时薛定谔方程，然后减少到一组紧耦合的三维径向膨胀函数的偏微分方程。在虚时间的正交约束下的弛豫产生了具有真实的能量的2s 2 2 p 2 P空原子态，而在真实的时间中的传播产生了总俄歇率和双俄歇率.总俄歇速率与以前的鞍点复旋转计算是在合理的协议。双俄歇率被发现是总俄歇率的10%，与最近的实验中发现的He-2s 2 p 2 4 P的相对较大的双俄歇率与总俄歇率之比一致。
The double autoionization rate for the He � 2s 2 2p 2 P hollow atom state is calculated using a nonperturbative time-dependent close-coupling method. The nine-dimensional wave function for the three electron atom is expanded in coupled spherical harmonics. The time-dependent Schrodinger equation is then reduced to a set of close-coupled partial differential equations for the three-dimensional radial expansion functions. Relaxation in imaginary time subject to orthogonality constraints yields a 2s 2 2p 2 P hollow atom state with real energy, while propagation in real time yields total and double Auger rates. The total Auger rate is in reasonable agreement with previous saddle-point complex-rotation calculations. The double Auger rate is found to be 10% of the total Auger rate, in keeping with the relatively large double to total ratio found in recent experiments for He � 2s2p 2 4 P.