Observation of Coulomb focusing of autoionization electrons produced in low-energy He/sup +/+He collisions

Journal Article · Mon Jul 03 00:00:00 EDT 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.63.35· OSTI ID:5961361

Swenson, J K; Havener, C C; Stolterfoht, N; Sommer, K; Meyer, F W

We report observation of a significant enhancement in the intensity of target and projectile autoionizing electrons produced in low-energy (2--15 keV) He/sup +/+He collisions. The target electron intensity is strongly peaked at 0/degree/ and confined to an angular range of /approx/5/degree/ about the incident beam direction, while the projectile electron intensity shows a similar enhancement at 180/degree/. We attribute this effect to /ital Coulomb/ /ital focusing/, a new aspect of post-collision interaction which results from the deflection of the ejected electrons in the Coulomb field of the receding spectator ion.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372(US)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5961361
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 63:1
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
FOCUSING
CATIONS
ION-ATOM COLLISIONS
HELIUM IONS
COULOMB FIELD
HELIUM
KEV RANGE 01-10
KEV RANGE 10-100
PROJECTILES
TARGETS
TIME DEPENDENCE
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
ELECTRIC FIELDS
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
ION COLLISIONS
IONIZATION
IONS
KEV RANGE
NONMETALS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena