Rydberg transition emission after multielectron capture in low-energy collisions of Ar sup 9+ with He, Ne, and Ar
- Laboratoire de Spectrometrie Ionique et Moleculaire, Universite Claude Bernard (Lyon I), Campus de la Doua, 69622 Villeurbanne CEDEX, France (FR)
Cross sections for emission of Rydberg transitions in collisions of Ar{sup 9+} ions with He, Ne, and Ar atoms have been measured at an impact energy of 180 keV. Transitions from levels {ital n}=6,...,11 and {ital l}=5,...,9 following multielectron capture and cascading processes have been observed in fast Ar{sup 7+}, Ar{sup 6+}, Ar{sup 5+}, and Ar{sup 4+} ions. Emission of recoil ions, attributed to transitions in HeII, Ne II--IV, and ArII--IV give an additional proof of the capture of several electrons by the projectile. Doubly excited Rydberg states, also observed in ArVIII, are due to a multicapture process. Cross sections for multicapture with stabilization of two electrons in Rydberg states are compared to those determined by coincidence measurements.
- OSTI ID:
- 5989557
- Journal Information:
- Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 42:11; ISSN 1050-2947; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ARGON IONS
ATOM COLLISIONS
CAPTURE
CHARGED PARTICLES
COLLISIONS
ELECTRON CAPTURE
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FLUIDS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
MANY-BODY PROBLEM
MULTICHARGED IONS
NEON
NONMETALS
RARE GASES
RYDBERG STATES