Nuclear spin conversion in formaldehyde

Details Nuclear spin conversion in formaldehyde Nuclear spin conversion in formaldehyde

2000-09-24

arxiv.org/abs/physics/0009070v1

J. Molecular Structure v.599, 337 (2001)

Physics

Chemical Physics

REVTEX, 16 pages + 5 eps figures

Scientific paper

10.1016/S0022-2860(01)00854-7

Theoretical model of the nuclear spin conversion in formaldehyde (H2CO) has
been developed. The conversion is governed by the intramolecular spin-rotation
mixing of molecular ortho and para states. The rate of conversion has been
found equal 1.4*10^{-4}~1/s*Torr. Temperature dependence of the spin conversion
has been predicted to be weak in the wide temperature range T=200-900 K.

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