Electronic screening in heavy-ion--atom collisions

Journal Article · Thu Oct 01 04:00:00 EDT 1981 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.24.1741· OSTI ID:6137617

Toburen, L H; Stolterfoht, N; Ziem, P; Schneider, D

A model is developed to describe the effects of screening by projectile electrons in heavy-ion--atom collisions. The effective nuclear charge of the projectile is estimated as a function of the interaction distance based on the spatial distribution of bound electrons derived from their electronic wave functions. Correlation of the effective interaction distance with collisional energy transfer through the Massey criterion enables comparison of model predictions of effective projectile charge with results obtained from differential-ionization-cross-section measurements. The model is found to provide a reliable estimate of screening for measurements involving fast helium and oxygen ions.

• Research Organization: Pacific Northwest Laboratory, Richland, Washington 99352
• OSTI ID: 6137617
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 24:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DISTANCE
EFFECTIVE CHARGE
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HELIUM IONS
INTERACTION RANGE
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
LEPTONS
NUCLEAR SCREENING
OXYGEN IONS
SCREENING