Suppression of Penning ionization by spin polarization of cold He(2 S-3) atoms - art. no. 050702

Authors
Herschbach, N Tol, PJJ Hogervorst, W Vassen, W
Citation
N. Herschbach et al., Suppression of Penning ionization by spin polarization of cold He(2 S-3) atoms - art. no. 050702, PHYS REV A, 6105(5), 2000, pp. 0702
Citations number
9
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6105
Issue
5
Year of publication
2000
Database
ISI
SICI code
1050-2947(200005)6105:5<0702:SOPIBS>2.0.ZU;2-S
Abstract
We measure the suppression of Penning ionization in an ultracold He(2 S-3(1 )) atomic cloud after spin-polarizing the atoms by optical pumping in a sma ll magnetic field. An upper limit of 6x10(-12) cm(3)/s for the ionization r ate constant is deduced, at least a factor 20 lower than measured in an unp olarized gas.