Impact-parameter dependence of proton-induced K-shell ionization of carbon and aluminum

Journal Article · Thu Sep 01 04:00:00 EDT 1977 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.16.1075· OSTI ID:7297798

Weber, K H; Bell, F

The impact-parameter dependences of the ionization probability of the carbon and aluminum K shells by proton impact have been measured in a proton--x-ray coincidence experiment. Influences of the fluorescence yield and of the multiple scattering of the projectiles inside the target foils on the evaluation of the ionization probabilities have been investigated. The experimental results are compared with existing theories. Whereas the aluminum data can be explained by Coulomb ionization if adiabatic relaxation of the 1s state is taken into account, the experimental results for carbon exceed the theoretical values, especially at small impact parameters. Several possible reasons for this result are discussed.

• Research Organization: Sektion Physik der Universitaet Muenchen, Muenchen, Germany
• OSTI ID: 7297798
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 16:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM
ATOM COLLISIONS
CARBON
CATIONS
CHARGED PARTICLES
COLLISIONS
ELECTRONIC STRUCTURE
ELEMENTS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
K SHELL
METALS
NONMETALS