Velocity-dependent neutralization cross sections of Ba sup + ground and metastable states by Na

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.42.3901· OSTI ID:6161975

Vermeeren, L; Lievens, P; Silverans, R E ^[1]

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1. Physics Department, Katholieke Universiteit Leuven, B-3030 Leuven (Belgium)

A combined optical-pumping--laser-induced-fluorescence method was developed to determine the fraction of metastable-state ions in a Ba{sup +} beam. This allowed us to measure the ratio of the charge-exchange cross sections for collisions of Ba{sup +}(6{ital s}) and Ba{sup +}(5{ital d}) ions with a sodium vapor for impact energies ranging from 3 to 29 keV. For a collision energy of 5 keV, the ratio of the cross sections for Ba{sup +}(5{ital d} {sup 2}{ital D}{sub 3/2}) and Ba{sup +}(5{ital d} {sup 2}{ital D}{sub 5/2}) was measured. All results are compared to theoretical near-resonance predictions.

• OSTI ID: 6161975
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 42:7; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
BARIUM IONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY DEPENDENCE
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
GROUND STATES
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
METALS
METASTABLE STATES
OPTICAL PUMPING
PUMPING
SODIUM