Ortho-para transition in molecular hydrogen

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Date

2008-03-14

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Publisher

American Physical Society

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Abstract

The radiative ortho-para transition in molecular hydrogen is studied. This highly forbidden transition is very sensitive to relativistic and subtle nonadiabatic effects. Our result for the transition rate in the ground vibrational level Γ(J=1→J=0)=6.20(62)×10−14 yr−1 is significantly lower in comparison to all the previous approximate calculations. Experimental detection of such a weak line by observation of, for example, cold interstellar molecular hydrogen is at present unlikely.

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Keywords

Ortho-para transition, Hydrogen molecule, Forbidden transition, Nonadiabatic effects, Exponentially correlated Gaussian functions, Sigma- symmetry

Citation

Phys. Rev. A 77, 030501(R) (2008)

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ISBN

ISSN

1094-1622

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Uniwersytet im. Adama Mickiewicza w Poznaniu
Biblioteka Uniwersytetu im. Adama Mickiewicza w Poznaniu
Ministerstwo Nauki i Szkolnictwa Wyższego