Observation of early photon conversions in high-energy cosmic-ray interactions

Conference · Tue Jun 15 00:00:00 EDT 1993 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5566418

Asakimori, K ^[1]; Burnett, T H ^[2]; Cherry, M L ^[3]; Christl, M J ^[4]; Dake, S ^[5]; Derrickson, J H; Fountain, W F ^[4]; Fuki, M ^[6]; Gregory, J C; Hayashi, T ^[7]; Holynski, R ^[8]; Iwai, J ^[2]; Iyono, A ^[9]; Jones, W V ^[3]; Jurak, A ^[8]; Lord, J J ^[10]; Miyamura, O ^[11]; Oda, H ^[12]; Ogata, T ^[13]

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1. Kobe Women's Junior College, Kobe (Japan)
2. University of Washington, Seattle, WA (United States)
3. Louisiana State University (United States)
4. G. Marshall Space Flight Center/NASA (United States)
5. Kobe Unibersity, Kobe (Japan)
6. Kochi University (Japan)
7. University of Alabama, Huntsville, AL (United States)
8. Institute for Nuclear Physics, Krakow (Poland)
9. Okayama University of Science (Japan)
10. University of Washington,Seattle WA (United States)
11. Hiroshima University, Hiroshima (Japan)
12. Kobe University, Kobe (Japan)
13. I

High energy cosmic ray interactions were studied by the JACEE Collaboration using balloon-borne emulsion chambers at high altitude. In high energy, yet low multiplicity interactions many secondary vertices were observed, probably due to decays of short-lived particles. Early conversions of photons were found in the vicinity of these vertices. Conversion distances and angular distributions of the photons were studied.

• OSTI ID: 5566418
• Report Number(s): CONF-9206284--
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (United States), Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Vol. 276:1; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CORRELATIONS
COSMIC NUCLEI
COSMIC RADIATION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY SPECTRA
GAMMA RADIATION
HEAVY ION REACTIONS
IONIZING RADIATIONS
MULTIPLICITY
NUCLEAR REACTIONS
NUCLEI
PRIMARY COSMIC RADIATION
RADIATIONS
SPECTRA