HYDROGEN-ASSISTED LASER-INDUCED RESONANT TRANSITIONS BETWEEN METASTABLE STATES OF ANTIPROTONIC HELIUM-ATOMS

Authors
KETZER B HARTMANN FJ VONEGIDY T MAIERL C POHL R EADES J WIDMANN E YAMAZAKI T KUMAKURA M MORITA N HAYANO RS HORI M ISHIKAWA T TORII HA SUGAI I HORVATH D
Citation
B. Ketzer et al., HYDROGEN-ASSISTED LASER-INDUCED RESONANT TRANSITIONS BETWEEN METASTABLE STATES OF ANTIPROTONIC HELIUM-ATOMS, Physical review letters, 78(9), 1997, pp. 1671-1674
Citations number
20
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
9
Year of publication
1997
Pages
1671 - 1674
Database
ISI
SICI code
0031-9007(1997)78:9<1671:HLRTBM>2.0.ZU;2-O
Abstract
Laser resonance transitions between normally metastable states of anti protonic helium atoms were observed making use of state dependent quen ching effects caused by small admixtures of Hz molecules. By selective ly shortening the lifetimes of states with higher principal quantum nu mber n as compared to those of lower n, this method for the first time provides access to all initially populated metastable states of <(p)o ver bar He+> atoms. This was demonstrated by observing the transitions (n, l) = (38, l) --> (39, l + 1), l = 35, 36, 37 and (n, l) = (37, l) --> (38, l + 1), l = 34, 35, 36.