Separation and conversion of nuclear spin isomers of ethylene

Authors
Chapovsky, PL Cosleou, J Herlemont, F Khelkhal, M Legrand, J
Citation
Pl. Chapovsky et al., Separation and conversion of nuclear spin isomers of ethylene, CHEM P LETT, 322(5), 2000, pp. 424-428
Citations number
21
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
322
Issue
5
Year of publication
2000
Pages
424 - 428
Database
ISI
SICI code
0009-2614(20000526)322:5<424:SACONS>2.0.ZU;2-J
Abstract
First separation of the nuclear spin isomers of ethylene molecules ((CCH4)- C-13-C-12) and determination of the isomer conversion rate are reported. Ex periment has revealed a linear increase of the conversion rate versus gas p ressure equal to (5.2 +/- 0.8) . 10(-4) s(-1)/Torr. This indicates that the isomer conversion in (CCH4)-C-13-C-12 is governed by quantum relaxation. ( C) 2000 Elsevier Science B.V. All rights reserved.