Electron capture by and electron excitation of two-electron fluorine ions incident on helium
Journal Article
·
· Phys. Rev. A; (United States)
It is demonstrated that the total F K x-ray production cross section for F/sup 7 +/+ He collisions comes predominantly from three types of processes. These processes are 1s-electron excitation of the 1s/sup 2/ /sup 1/S ground state of F/sup 7 +/, 2s electron excitation of the 1s2s /sup 3/S metastable state of F/sup 7 +/, and nl electron capture by the 1s2s /sup 3/S metastable state of F/sup 7 +/. All three of these processes have one thing in common, namely, they result in F K x rays. By using a high-resolution x-ray spectrometer, the cross sections for the three processes are measured separately as a function of projectile energy in the range of 6 to 40 MeV. The assignment of the three different processes of 1s electron excitation, 2s electron excitation, and nl-electron capture is corroborated by comparing the measured energy dependences of the various K x-ray transitions with theory and other experimental measurements with F/sup 8 +/ and F/sup 9 +/ beams.
- Research Organization:
- Department of Physics, Kansas State University, Manhattan, Kansas 66506
- OSTI ID:
- 5960046
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 27:6; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMIC IONS
BEAMS
CAPTURE
CHARGED PARTICLES
COLLISIONS
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FLUORINE IONS
GASES
HELIUM
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MEV RANGE
MEV RANGE 10-100
MULTICHARGED IONS
NONMETALS
RARE GASES
SPECTRA
X-RAY SPECTRA
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMIC IONS
BEAMS
CAPTURE
CHARGED PARTICLES
COLLISIONS
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FLUORINE IONS
GASES
HELIUM
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MEV RANGE
MEV RANGE 10-100
MULTICHARGED IONS
NONMETALS
RARE GASES
SPECTRA
X-RAY SPECTRA