Published July 2004
| Version v1
Journal article
Systematic study of the decay rates of antiprotonic helium states
Creators
- Yamaguchi, H.1, 2, 3, 4, 5, 6
- Hayano, R.S.1, 2, 3, 4, 5, 6
- Ishikawa, T.1, 2, 3, 4, 5, 6
- Sakaguchi, J.1, 2, 3, 4, 5, 6
- Widmann, E.1, 2, 3, 4, 5, 6
- Eades, J.1, 2, 3, 4, 5, 6
- Hori, M.1, 2, 3, 4, 5, 6
- Torii, H.A.1, 2, 3, 4, 5, 6
- Juhasz, B.1, 2, 3, 4, 5, 6
- Horvath, D.1, 2, 3, 4, 5, 6
- Yamazaki, T.1, 2, 3, 4, 5, 6
- 1. RI Beam Science Laboratory, RIKEN, Wako, Saitama 351-0198 (Japan)
- 2. KFKI Research Institute For Particle and Nuclear Physics, H-1525 Budapest (Hungary)
- 3. Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001 Debrecen (Hungary)
- 4. Institute of Physics, University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902 (Japan)
- 5. CERN, CH-1211 Geneva 23 (Switzerland)
- 6. Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
Description
A systematic study of the decay rates of antiprotonic helium (p4He+ and p3He+) at CERN Antiproton Decelerator has been made by a laser spectroscopic method. The decay rates of some of its short-lived states, namely those for which the Auger rates γA are much larger than their radiative decay rates (γrad∼1 μs-1), were determined from the time distributions of the antiproton annihilation signals induced by laser beams, and the widths of the atomic resonance lines. The magnitude of the decay rates, especially their relation with the transition multipolarity, is discussed and compared with theoretical calculations
Additional details
Identifiers
- DOI
- 10.1103/PhysRevA.70.012501;
- arXiv
- arXiv:physics/0401095v1;
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 70
- Journal Issue
- 1
- Journal Page Range
- p. 012501-012501.5
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36084901
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ANNIHILATION; ANTIPROTONS; AUGER EFFECT; BOUND STATE; CERN; DISTRIBUTION; HADRONIC ATOMS; HELIUM; LIFETIME; LINE WIDTHS; MULTIPOLARITY; PHOTON-ATOM COLLISIONS; RADIATIVE DECAY; RESONANCE
- Descriptors DEC
- ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; ATOM COLLISIONS; ATOMS; BARYONS; COLLISIONS; DECAY; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; FLUIDS; GASES; HADRONS; INTERACTIONS; INTERNATIONAL ORGANIZATIONS; MATTER; NONMETALS; NUCLEI; NUCLEONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PHOTON COLLISIONS; PROTONS; RARE GASES
Optional Information
- Notes
- (c) 2004 The American Physical Society