First measurement of capture from e{sup +}e{sup {minus}} pair production in relativistic heavy ion collisions
Journal Article
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· Bulletin of the American Physical Society
OSTI ID:281613
- Lawerence Berkeley Laboratory, CA (United States); and others
Capture from pair production is a process in which the high transient electromagnetic field from a relativistic heavy-ion atomic collision produces an electron-positron pair with the electron emerging from the collision bound to the ion. It is a recombination process with unique properties: there is no electron in the initial state, it is observed only at relativistic energies, it has a cross section that increases with increasing beam energy and is predicted to be the dominant source of beam loss at RHIC to be built at Brookhaven National Laboratory. We report, for the first time, the observation and measurement of electron capture from e{sup +}e{sup -} pair production. The experiment was performed at the LBL-Bevalac using 956 MeV/u U92+ ions on Au, Ag and Cu targets. The results of this experiment will be presented and the cross sections will be compared with theory.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 281613
- Report Number(s):
- CONF-9305421--; CNN: Grant PHY8614650
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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