K-shell ionization probabilities of Pb at small impact parameters by 25-, 40-, and 74-MeV. cap alpha. particles

Journal Article · Thu Jul 01 04:00:00 EDT 1976 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.14.62· OSTI ID:7190049

Vader, R J; van der Woude, A; de Meijer, R J; Hansteen, J M; Amundsen, P A

The absolute K-shell ionization probabilities of Pb at very small impact parameters by 25-, 40-, and 74-MeV ..cap alpha.. particles are measured in an ..cap alpha..--x-ray coincidence experiment, using the slight inelasticity of the scattered ..cap alpha.. particles. Ionization probabilities are (1.9 +- 0.4) x 10/sup -4/, (4.9 +- 1.7) x 10/sup -4/, and (11 +- 3) x 10/sup -4/ at 25, 40, and 74 MeV, respectively. Semiclassical calculations, using relativistic electron wave functions and corrections for Coulomb deflection effects, agree very well with the data. Possible quantitative studies of atomic distortion effects are suggested. (AIP)

• Research Organization: Kernfysisch Versneller Instituut, Rijksuniversiteit Groningen, The Netherlands
• OSTI ID: 7190049
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 14:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALPHA BEAMS
ATOM COLLISIONS
BEAMS
COLLISIONS
ELEMENTS
ENERGY RANGE
HELIUM 4 BEAMS
HELIUM IONS
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
LEAD
METALS
MEV RANGE
MEV RANGE 10-100
SPECTRA
X-RAY SPECTRA