Electron scattering by Ca atoms and photodetachment of Ca{sup {minus}} ions: An R-matrix study

Journal Article · Fri Jan 31 23:00:00 EST 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.55.1020· OSTI ID:489260

Jianmin, Yuan; Fritsche, L ^[1]

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1. Institut fuer Theoretische Physik B, Technische Universitaet Clausthal, D-38678 Clausthal-Zellerfeld (Federal Republic of Germany)

We have performed close-coupling calculations on electron scattering by Ca atoms and on photodetachment of Ca{sup {minus}} ions by using a six-state ({sup 1}S- {sup 3}P- {sup 3}D- {sup 1}D- {sup 1}P- {sup 1}P) R-matrix method. We predict a strong interaction between (4s{sup 2}{sup 1}S+{epsilon}d){sup 2}D and (4s4p{sup 3}P+{epsilon}p){sup 2}D channels that gives rise to two relatively broad resonance peaks in the d-wave cross section. In addition, one obtains a strong and a weak peak in the total scattering cross section. Our calculations on the photodetachment cross section of Ca{sup {minus}} ions yield results that are in good qualitative agreement with the experimental data by allowing for the opening of a detachment channel connected to the excited state 4s4p{sup 3}P. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 489260
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALCIUM
CALCIUM IONS
CROSS SECTIONS
ELECTRON DETACHMENT
ELECTRON-ATOM COLLISIONS
EXCITED STATES
P STATES
PHOTON-ION COLLISIONS
R MATRIX
RESONANCE
S STATES
SCATTERING