Tunneling between double wells of atom in crossed electromagnetic fields |
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Authors: | Shen Li Wang Lei Yang Hai-Feng Liu Xiao-Jun and Liu Hong-Ping |
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Institution: | State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; Graduate School of the Chinese Academy of Sciences, Beijing 100190, China |
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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.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. |
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Keywords: | double well tunneling crossed fields |
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