Tunneling between double wells of atom in crossed electromagnetic fields
Shen Li(沈礼)a)b),Wang Lei(汪磊) a)b),Yang Hai-Feng(杨海峰)a)b), Liu Xiao-Jun(柳晓军)a),andLiu Hong-Ping(刘红平)a)†
a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; b Graduate School of the Chinese Academy of Sciences, Beijing 100190, China
Abstract The tunneling between double wells of atom in crossed electromagnetic fields is investigated by a one-dimensional Hamiltonian model. The crossed fields induced outer well is apart from the nuclear origin and it is very difficult to access by means of spectroscopy but it will be possible if there exists the tunneling of the electron between the outer well and the Coulomb potential predominated well at the nuclear origin. A one-dimensional quantum calculation with B-spline basis has been performed for hydrogen atom in crossed fields accessible in our laboratory, at B = 0.8 T and F = -220 V$\cdot$cm-1. The calculation shows that the wavefunctions of some excited states close to the Stark saddle point in the outer well extend over to the Coulomb potential well, making it possible to penetrate the quantum information of the outer well. However, the tunneling rate is very small and the spectral measurement of the transitions from the ground state should be of a high resolution and high sensitivity.
Received: 18 December 2008
Revised: 11 March 2009
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10774162) and National
973 Project (Grant No 2005CB724501).
Cite this article:
Shen Li(沈礼),Wang Lei(汪磊),Yang Hai-Feng(杨海峰), Liu Xiao-Jun(柳晓军),andLiu Hong-Ping(刘红平) Tunneling between double wells of atom in crossed electromagnetic fields 2009 Chin. Phys. B 18 5277
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