Atomic charge exchange between fast helium ions and targets from carbon to bismuth at β=0.36
Creators
- Dennis, K.1, 2, 3, 4, 5, 6
- Akimune, H.1, 2, 3, 4, 5, 6
- Berg, G.P.A.1, 2, 3, 4, 5, 6
- Chang, S.1, 2, 3, 4, 5, 6
- Davis, B.1, 2, 3, 4, 5, 6
- Fujiwara, M.1, 2, 3, 4, 5, 6
- Harakeh, M.N.1, 2, 3, 4, 5, 6
- Jaenecke, J.1, 2, 3, 4, 5, 6
- Liu, J.1, 2, 3, 4, 5, 6
- Pham, K.1, 2, 3, 4, 5, 6
- Roberts, D.A.1, 2, 3, 4, 5, 6
- Stephenson, E.J.1, 2, 3, 4, 5, 6
- 1. Kernfysisch Versneller Instituut, 9747AA Groningen (Netherlands)
- 2. Research Center for Nuclear Physics, Osaka University, Osaka 567 (Japan)
- 3. University of Notre Dame, Notre Dame, Indiana 47408 (United States)
- 4. Indiana University Cyclotron Facility, Bloomington, Indiana 47408 (United States)
- 5. Department of Physics, Kyoto University, Kyoto 606 (Japan)
- 6. The University of Michigan, Ann Arbor, Michigan 48109 (United States)
Description
Equilibrium charge-state distributions for singly and doubly ionized 3He ions of energy E(3He)=200 MeV (β=0.36) have been measured for atomic targets ranging from carbon to bismuth (Z=6,14,28,40,50,67,73,83). A magnetic spectrometer was used to simultaneously measure the rate of 3He+ ions and the current of the incident beam of 3He2+ ions. The ratio of the fraction of ions Y(3He)+/Y(3He2+) was found to increase from 3x10-9 for Z=6 to 2x10-7 for Z=83. Very good agreement with the experimental ratios was obtained for calculated ratios based on theoretical stripping (ionization) and capture cross sections. The cross sections are dominated by capture from K orbits only for atoms up to about Z=25. For target atoms with high Z, contributions up to principal quantum numbers n=4 (N orbits) must be included
Additional details
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 50
- Journal Issue
- 5
- Journal Page Range
- p. 3992-3999.
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26027612
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ATOMIC NUMBER; BISMUTH; CARBON; CROSS SECTIONS; ELECTRON CAPTURE; ELEMENTS; HELIUM IONS; HELIUM 3; ION-ATOM COLLISIONS; K SHELL; RELATIVISTIC RANGE; SENSITIVITY; TARGETS
- Descriptors DEC
- ATOM COLLISIONS; CAPTURE; CHARGED PARTICLES; COLLISIONS; ELECTRONIC STRUCTURE; ENERGY RANGE; EVEN-ODD NUCLEI; HELIUM ISOTOPES; ION COLLISIONS; IONS; ISOTOPES; LIGHT NUCLEI; METALS; NONMETALS; NUCLEI; STABLE ISOTOPES