Distribution in angle of the Bloch correction in electronic stopping

Journal Article · Mon Mar 31 23:00:00 EST 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.55.2896· OSTI ID:530941

The position in angular space of the Bloch correction to the perturbative electronic stopping power formula of Bethe is investigated. It is demonstrated that this nonperturbative correction which originates in close collisions between the penetrating ion and target electrons appears at small scattering angles and that its position depends on the (adiabatic) cutoff at large distances. In the limit of infinite range the correction moves to infinitely small angles but remains finite and both the exact and the perturbative cross sections approach the Rutherford value at all finite angles. The picture is consistent with the lack of a Bloch-type correction in the energy-loss straggling. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 530941
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANALYTICAL SOLUTION
BLOCH EQUATIONS
CORRECTIONS
ELECTRON-ION COLLISIONS
ENERGY LOSSES
PERTURBATION THEORY
STOPPING POWER