Published April 1996
| Version v1
Journal article
Measurement of 0.25 endash 3.2 GeV antiprotons in the cosmic radiation
Creators
- Mitchell, J.W.1, 2, 3, 4, 5
- Barbier, L.M.1, 2, 3, 4, 5
- Christian, E.R.1, 2, 3, 4, 5
- Krizmanic, J.F.1, 2, 3, 4, 5
- Krombel, K.1, 2, 3, 4, 5
- Ormes, J.F.1, 2, 3, 4, 5
- Streitmatter, R.E.1, 2, 3, 4, 5
- Labrador, A.W.1, 2, 3, 4, 5
- Davis, A.1, 2, 3, 4, 5
- Mewaldt, R.A.1, 2, 3, 4, 5
- Schindler, S.M.1, 2, 3, 4, 5
- Golden, R.L.1, 2, 3, 4, 5
- Stochaj, S.J.1, 2, 3, 4, 5
- Webber, W.R.1, 2, 3, 4, 5
- Menn, W.1, 2, 3, 4, 5
- Hof, M.1, 2, 3, 4, 5
- Reimer, O.1, 2, 3, 4, 5
- Simon, M.1, 2, 3, 4, 5
- Rasmussen, I.L.1, 2, 3, 4, 5
- 1. Danish Space Research Institute, DK-2800 Lyngby (Denmark)
- 2. University of Siegen, Siegen, 57068 (Germany)
- 3. New Mexico State University, Las Cruces, New Mexico 88003 (United States)
- 4. California Institute of Technology, Pasadena, California 91125 (United States)
- 5. NASA Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)
Description
The balloon-borne isotope matter-antimatter experiment (IMAX) was flown from Lynn Lake, Manitoba Canada on 16 endash 17 July 1992. Using velocity and magnetic rigidity to determine mass, we have directly measured the abundances of cosmic ray antiprotons and protons in the energy range from 0.25 to 3.2 GeV. Both the absolute flux of antiprotons and the antiproton/proton ratio are consistent with recent theoretical work in which antiprotons are produced as secondary products of cosmic ray interactions with the interstellar medium. This consistency implies a lower limit to the antiproton lifetime of ∼107 yr. copyright 1996 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 76
- Journal Issue
- 17
- Journal Page Range
- p. 3057-3060.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27077572
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANTIPROTONS; COSMIC RADIATION; GEV RANGE 01-10; LIFETIME; MASS; MEV RANGE 100-1000; PROTONS
- Descriptors DEC
- ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; CATIONS; CHARGED PARTICLES; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; IONIZING RADIATIONS; IONS; MATTER; MEV RANGE; NUCLEI; NUCLEONS; RADIATIONS