Positron-electron pairs produced in heavy-ion collisions

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.60.064601· OSTI ID:20218005

Ahmad, I ^[1]; Austin, Sam M ^[2]; Back, B B ^[1]; Betts, R R ^[1]; Calaprice, F P ^[3]; Chan, K C ^[4]; Chishti, A ^[5]; Conner, C M ^[6]; Dunford, R W ^[1]; Fox, J D ^[5]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. NSCL and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)
3. Physics Department, Princeton University, Princeton, New Jersey 08544 (United States)
4. A. W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511 (United States)
5. Physics Department, Florida State University, Tallahassee, Florida 32306 (United States)
6. Physics Department, University of Illinois at Chicago, Chicago, Illinois 60607 (United States)

The production of positron-electron pairs in collisions of {sup 238}U+{sup 232}Th at 5.95 MeV/nucleon, and of {sup 238}U+{sup 181}Ta at 5.95, 6.1, and 6.3 MeV/nucleon, has been studied with the APEX spectrometer at Argonne National Laboratory. Several analyses have been performed to search for sharp structures in sum-energy spectra for positron-electron pairs. Such features have been reported in previous experiments. No statistically convincing evidence for such behavior is observed in the present data. (c) 1999 The American Physical Society.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• OSTI ID: 20218005
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 60; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ELECTRON-POSITRON INTERACTIONS
EXPERIMENTAL DATA
HEAVY ION REACTIONS
PAIR PRODUCTION
TANTALUM 181
THEORETICAL DATA
THORIUM 232
URANIUM 238