Calculation of electron-impact excitation from metastable states of the Sr atom

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.56.3753· OSTI ID:543799

Gedeon, V; Lengyel, V ^[1]; Zatsarinny, O ^[2]; Kocher, C A ^[3]

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1. Department of Theoretical Physics, Uzhgorod State University, 32 Voloshin Street, Uzhgorod 294000 (Ukraine)
2. Institute of Electron Physics, Universitetska 21, Uzhgorod 294016 (Ukraine)
3. Department of Physics, Oregon State University, Corvallis, Oregon 97331 (United States)

Electron-impact excitation of Sr from metastable states is studied in the framework of an elaborate close-coupling approximation, using accurate target wave functions. An interpretation is given of measured cross sections, including their near-threshold resonance structure. The cross sections for transitions induced from the 5s5p{sup 3}P metastable level to the 5s5d{sup 3}D, 5p{sup 23}P, 5s6s{sup 3}S, 4d5p{sup 1}D, 5s4f{sup 3}F, 4d5p{sup 3}F, and 5s6p{sup 3}P levels are calculated in Born-Ochkur and two-state and six-state close-coupling approximations. We also consider transitions from the 5s{sup 21}S ground state to these levels. The calculations are based on a nonrelativistic Hamiltonian. In the configuration-interaction approximation, accurate wave functions are used for the outer electrons, with a frozen core. The results are found to be in good agreement with the most recent experimental data. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 543799
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 56; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CONFIGURATION INTERACTION
ELECTRON-ATOM COLLISIONS
EXCITATION
GROUND STATES
METASTABLE STATES
REVIEWS
STRONTIUM
WAVE FUNCTIONS