OBSERVATION OF ORTHO-PARA H-3(-RULES IN PLASMA CHEMISTRY() SELECTION)

Authors
UY D CORDONNIER M OKA T
Citation
D. Uy et al., OBSERVATION OF ORTHO-PARA H-3(-RULES IN PLASMA CHEMISTRY() SELECTION), Physical review letters, 78(20), 1997, pp. 3844-3847
Citations number
18
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
20
Year of publication
1997
Pages
3844 - 3847
Database
ISI
SICI code
0031-9007(1997)78:20<3844:OOOHIP>2.0.ZU;2-7
Abstract
Intensity ratios of infrared spectral lines of ortho- and para-H-3(+) have been measured in hydrogen plasmas using normal and para-H-2. Larg e dependences of the intensity ratios on the parent gases have been ob served, indicating the spin memory of protons even after chemical reac tions. The results clearly demonstrate the existence of selection rule s on nuclear spin modifications in chemical reactions theoretically an ticipated by M. Quack.