Metastable states of antiprotonic helium in the energy range of the 2{ital S} and 2{ital P} states of helium: Hyperspherical analysis of the system

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.R3705· OSTI ID:388294

Tolstikhin, O I; Watanabe, S; Matsuzawa, M ^[1]

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1. Department of Applied Physics and Chemistry, University of Electro-Communications, 1-5-1 Chofu-ga-oka, Chofu-shi, Tokyo 182 (Japan)

Metastable states of antiprotonic helium {ital {bar p}}He{sup +} whose energies lie in the range of the 2{ital S} and 2{ital P} excited states of He are discussed and their energies are calculated using the hyperspherical method within the {open_quote}{open_quote}symmetric top{close_quote}{close_quote} approximation. These states can be populated via collisions of antiprotons with excited He atoms. They represent another group of the potentially observable metastable states of {ital {bar p}}He{sup +}, which are characterized by the total angular momentum {ital L}{approximately}70, in contrast to the recently discovered metastable states having {ital L}{approximately}35. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388294
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AB INITIO CALCULATIONS
ANTIPROTONS
EXCITED STATES
HELIUM IONS
METASTABLE STATES
P STATES
S STATES