Stability of the ground state vinylidene anion H2CC-

Authors
Jensen, MJ Pedersen, UV Andersen, LH
Citation
Mj. Jensen et al., Stability of the ground state vinylidene anion H2CC-, PHYS REV L, 84(6), 2000, pp. 1128-1131
Citations number
26
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
84
Issue
6
Year of publication
2000
Pages
1128 - 1131
Database
ISI
SICI code
0031-9007(20000207)84:6<1128:SOTGSV>2.0.ZU;2-O
Abstract
A technique to measure very low collisionless decay rates of ionic species has been applied at a new electrostatic storage ring to obtain the rate for spontaneous rearrangement of the vinylidene anion to neutral acetylene. Th e measurement yields a rate of k(0) = (0.009 +/- 0.006) s(-1), correspondin g to a natural lifetime of the vinylidene anion uf tau(0) similar or equal to 110 s.