Direct production of electron-positron pairs by 200-GeV/nucleon oxygen and sulfur ions in nuclear emulsion

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.51.1253· OSTI ID:6601031

Derrickson, J H; Eby, P B; Moon, K H; Parnell, T A ^[1]; King, D T ^[2]; Gregory, J C; Takahashi, Y ^[3]; Ogata, T ^[4]

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1. Space Sciences Laboratory, NASA Marshall Space Flight Center, Huntsville, Alabama 35812 (United States)
2. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
3. College of Science, University of Alabama in Huntsville, Huntsville, Alabama 35899 (United States)
4. Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188 (Japan)

Measurements of direct Coulomb electron-positron pair production have been made on the tracks of relativistic heavy ions in nuclear track emulsion. Tracks of O[sup 16] and S[sup 32] at 200 GeV/nucleon were studied. The measured total cross sections and energy and emission angle distributions for the pair members are compared to theoretical predictions. The data are consistent with some recent calculations when knock-on electron contamination is accounted for.

• OSTI ID: 6601031
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 51:2; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 100-1000
INTERACTIONS
ION COLLISIONS
IONS
LEPTONS
MATTER
NUCLEAR EMULSIONS
OXYGEN IONS
PAIR PRODUCTION
PARTICLE PRODUCTION
POSITRONS
SULFUR IONS
TOTAL CROSS SECTIONS