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ELECTRON PAIR PRODUCTION IN THE FIELD OF THE PROTON AND IN THE FIELD OF THE ELECTRON BY PHOTONS OF ENERGY FROM 10 Mev TO 1 Bev

Journal Article · · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
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A 24-in. diffusion cloud chamber filled with hydrogen and located in a magnetic field was placed in the hardened bremsstrahlung beam of the Cornell synchrotron to study electron pair production in the proton field (P.F. pairs) and in the eleciron field (E.F. pairs). The E.F. pairs could be detected wiih an average efficiency of approximately 85% and are about as abundant as the P.F. pairs. A total of 3065 pairs produced by photons with energy from 10 to 1040 Mev were analyzed. The recoil momentum distribution of the E.F. pairs was in good agreement with the distribution predicted by Suh and Bethe. The cross section for E.F. pairs was consistent with thti calculated by Wheeler and Lamb. The distribution of the opening angle of P.F, and E.F. pairs was in general agreement with Borsellino's calculations, at large angles. However, the peak appears at smaller angles than predicted. (auth)
Research Organization:
Cornell Univ., Ithaca, N.Y.
NSA Number:
NSA-14-000885
OSTI ID:
4197110
Journal Information:
Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 115; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ANGULAR DISTRIBUTION
BEAMS
BREMSSTRAHLUNG
CLOUD CHAMBERS
CROSS SECTIONS
DIFFUSION CHAMBERS
EFFICIENCY
ELECTRONS
ENERGY RANGE
HYDROGEN
INTERACTIONS
MAGNETIC FIELDS
MEASURED VALUES
PAIR PRODUCTION
PHOTONS
PHYSICS
PROTONS
QUANTITY RATIO
SYNCHROTRONS