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DIRECT PRODUCTION OF ELECTRON PAIRS BY HIGH ENERGY ELECTRONS. MODEL OF FORMATION OF THE INITIAL TRACK OF ELECTRON PAIRS. ELIMINATION OF FAKE TRIDENTS (in French)

Journal Article · · Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B
OSTI ID:4308327
; ;
The mean free path for direct electron pair production by electrons has been measured in the energy region 2 to 8, 8 to 32, and 32 to 150 Bev. The obtained values are less than those foreseen by Bhabha's theory. The disagreement is not imputable to energy underestimations. A three dimensional model of track formation in nuclear emulsion which accounts for the ionization variation observed at the beginning of electron pairs of more than ten Bev is described. This indicates that energy determinations using methods described in a previous paper are correct while energies evaluated on the basis of dipole effect theory can be overestimated by l00 times. The number of unresolvable bremsstrahlung pairs produced on the track of an electron of known path and energy hns been calculated. Errors inherent to Koshiba and Kaplon's method are thus eliminated. (auth)
Research Organization:
Laboratoire de Recherches Nucleaires, E.P.U.L., Lausanne, Switzerland
NSA Number:
NSA-12-006035
OSTI ID:
4308327
Journal Information:
Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B, Journal Name: Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B Vol. Vol: (10) 6; ISSN NUCIA
Country of Publication:
Country unknown/Code not available
Language:
French

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Related Subjects

BREMSSTRAHLUNG
DIFFUSION LENGTH
ELECTRONS
ENERGY
ENERGY RANGE
ERRORS
GEV RANGE
IONIZATION
NUCLEAR EMULSIONS
PAIR PRODUCTION
PARTICLE TRACKS
PHYSICS
PROTONS
VARIATIONS