Ultra-low energy electrons from fast heavy-ion helium collisions: the 'target Cusp'
Creators
- 1. Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
- 2. Freiburg Univ. (Germany)
- 3. Queen's Univ., Belfast, Northern Ireland (United Kingdom)
- 4. Magyar Tudomanyos Akademia, Debrecen (Hungary). Atommag Kutato Intezete
- 5. Kansas State Univ., Manhattan, KS (United States). J.R. MacDonald Lab.
- 6. Missouri Univ., Rolla, MO (United States). Dept. of Physics
Description
Doubly differential cross sections d2σ/dv parallel dv perpendicularto have been obtained by mapping the 3-dimensional velocity space of ultra-low and low-energy electrons (1.5 meV≤ Ee≤100 eV) emitted in singly ionizing 3.6 MeV/u Au53+ on helium collisions. A sharp (ΔEeperpendiculartoFWHM ≤ 22 meV) asymmetric peak centered at vertical stroke anti ν vertical stroke =0 is observed to emerge at ultra-low energies from the strongly forward shifted low-energy electron velocity distribution. The shape of this ''target cusp'', which is very sensitive on the details of the two-center potential, is in excellent accord with theoretical CTMC and CDW-EIS predictions. (orig.)
Availability note (English)
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Additional details
Publishing Information
- Imprint Pagination
- 18 p.
- Report number
- GSI--98-61(prepr.)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 30011309
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- DIFFERENTIAL CROSS SECTIONS; ELECTRON SPECTRA; EXPERIMENTAL DATA; GEV RANGE 01-10; GOLD IONS; HELIUM; ION-ATOM COLLISIONS; IONIZATION; MULTICHARGED IONS
- Descriptors DEC
- ATOM COLLISIONS; CHARGED PARTICLES; COLLISIONS; CROSS SECTIONS; DATA; ELEMENTS; ENERGY RANGE; GEV RANGE; INFORMATION; ION COLLISIONS; IONS; NONMETALS; NUMERICAL DATA; RARE GASES; SPECTRA