Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules |
| |
| Authors: | B. Juhász J. Eades R.S. Hayano M. Hori D. Horváth T. Ishikawa J. Sakaguchi H.A. Torii E. Widmann H. Yamaguchi T. Yamazaki |
| |
| Affiliation: | (1) Institute of Nuclear Research of the Hungarian Academy of Sciences, 4001 Debrecen, Hungary, HU;(2) CERN, 1211 Geneva 23, Switzerland, CH;(3) Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan, JP;(4) KFKI Research Institute for Particle and Nuclear Physics, 1525 Budapest, Hungary, HU;(5) Institute of Physics, University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153, Japan, JP;(6) RI Beam Science Laboratory, RIKEN, Wako, Saitama 351-0198, Japan, JP |
| |
| Abstract: | ![]()
Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules has been studied using laser spectroscopy at CERN's new Antiproton Decelerator facility. The quenching cross-sections of the states (n, l )= (39, 36), (39, 37), and (39, 38) were determined from the decay rates of the states which were observed using the “deuterium-assisted inverse resonance” (DAIR) method. The results revealed a similar (n, l )-dependence of the quenching cross-sections as in the case of hydrogen but the values were smaller by a factor of ∼1.5. Received 6 July 2001 |
| |
| Keywords: | PACS. 36.10.-k Exotic atoms and molecules (containing mesons, muons, and other unusual particles) – 42.62.Fi Laser spectroscopy – 34.20.Gj Intermolecular and atom-molecule potentials and forces |
| 本文献已被 SpringerLink 等数据库收录！ |
|
