Experimental evidence of the asymmetry of the soft electron peak in ion-atom ionization

Journal Article · Sun Jan 24 23:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.418· OSTI ID:6898270

Suarez, S; Garibotti, C; Meckbach, W; Bernardi, G ^[1]

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1. Centro Atomico Bariloche, and Consejo Nacional de Investigaciones Cientificas y Tecnicas, 8400 San Carlos de Bariloche, Rio Negro (Argentina)

We have measured the doubly differential energy and angular distribution of low-energy electrons emitted in collisions of H[sup +] and [sup 3]He[sup 2+] on Ne at 106 keV/u. In this way, we are able to obtain information about the shape of the soft electron ionization peak. Against current belief, but in accordance with a two-Coulomb-center interaction of the emitted electron, we find it to be strongly asymmetric in the forward-backward direction. We discuss the shape of the cross section and introduce a parametric expression for fitting the data.

• OSTI ID: 6898270
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:4; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ASYMMETRY
ATOM COLLISIONS
CATIONS
CHARGED PARTICLES
COLLISIONS
COULOMB FIELD
CROSS SECTIONS
DATA
DISTRIBUTION
ELECTRIC FIELDS
ELECTRON EMISSION
ELEMENTS
EMISSION
ENERGY DEPENDENCE
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM 3
HELIUM IONS
HELIUM ISOTOPES
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
ISOTOPES
LIGHT NUCLEI
NEON
NONMETALS
NUCLEI
NUMERICAL DATA
PARAMETRIC ANALYSIS
PROJECTILES
RARE GASES
STABLE ISOTOPES