Ortho-para transition in molecular hydrogen
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Date
2008-03-14
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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)