THE 2ps STATE OF HYDROGEN MOLECULAR ION IN A STATIC FIELD
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Abstract
In this article, the physical quantities characterizing the ionization process such as the ionization rate and transverse momentum distribution for the 2ps of hydrogen molecular ion are thoroughly investigated as the molecule is rotated about the molecular center. We also fix the direction of electric field, thus are able to vary the orientation angle of the molecule in the external field. In this study, the Siegert state method for preciously numerical calculation was applied, then the results were compared with those obtained from the weak-field asymptotic theory to validate the approach. The results indicate that the ionization rate reached a maximum at the orientation angle , then gradually decreased to a minimum at . Besides, the transverse momentum distribution of the ionized electron well reflects the structural and symmetric properties of 2ps orbital with respect to the axis of the electric field. The combination of different ionization rates is also imprinted in the transverse momentum distribution.
Keywords
Siegert state, H2 , ionization rate, transverse momentum distribution
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References
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