L-subshell ionization cross sections for uranium by proton and alpha-particle bombardment
Journal Article
·
· Phys. Rev., A; (United States)
X rays resulting from L-shell vacancies in uranium atoms, produced by bombarding thin targets with protons (2.0--18.0 MeV) and alphas (3.0--16.0 MeV) were measured using a Si(Li) x-ray detector. L-subshell ionization cross sections for uranium were extracted from the L..cap alpha../sub 1//sub ,//sub 2/, L..gamma../sub 1/, and L..gamma../sub 4//sub ,//sub 4//sub prime/ x-ray transitions. The observed projectile energy dependences are reasonably well reproduced by plane-wave Born, semiclassical, and binary-encounter approximation calculations at the higher energies, but show significant discrepancies below 2 MeV/amu. The ratios of sigma/sub L/1/sigma/sub L/2/ and sigma/sub L/3/sigma/sub L/2/ also show departures from theoretical predictions at low energies. (AIP)
- Research Organization:
- Williams Laboratory of Nuclear Physics, University of Minnesota, Minneapolis, Minnesota 55455
- OSTI ID:
- 7137020
- Journal Information:
- Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 14:6; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDES
ALPHA BEAMS
ATOM COLLISIONS
BEAMS
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
HELIUM 4 BEAMS
HELIUM IONS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
METALS
MEV RANGE
MEV RANGE 01-10
NUCLEON BEAMS
PARTICLE BEAMS
PROTON BEAMS
SPECTRA
URANIUM
X-RAY SPECTRA
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDES
ALPHA BEAMS
ATOM COLLISIONS
BEAMS
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
HELIUM 4 BEAMS
HELIUM IONS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
METALS
MEV RANGE
MEV RANGE 01-10
NUCLEON BEAMS
PARTICLE BEAMS
PROTON BEAMS
SPECTRA
URANIUM
X-RAY SPECTRA