Negative-ion formation in collisions of low-energy electrons with neutral sodium clusters - art. no. 063201

Authors
Kasperovich, V Tikhonov, G Wong, K Kresin, VV
Citation
V. Kasperovich et al., Negative-ion formation in collisions of low-energy electrons with neutral sodium clusters - art. no. 063201, PHYS REV A, 6206(6), 2000, pp. 3201
Citations number
48
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6206
Issue
6
Year of publication
2000
Database
ISI
SICI code
1050-2947(200012)6206:6<3201:NFICOL>2.0.ZU;2-7
Abstract
Electron collisions with neutral sodium clusters in the 0-3 eV energy range have been studied in a crossed-beam geometry, and direct evidence for the formation of Na-n(-) anions has been obtained. The dependence of ion format ion efficiency on the electron energy is well represented by the Langevin c ross section, suggesting that the electrons are captured by the polarizatio n field of the cluster. This is consistent with the highly polarizable natu re of alkali-metal clusters.