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AN EXPERIMENTAL STUDY OF CLOSE COLLISIONS OF HIGH ENERGY Mu-MESONS WITH ELECTRONS (thesis).

Author
Deery, R. F.
Published
United States : [publisher not identified], 1960.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1960.
Physical Description
microfiche : negative ; 8 x 13 cm

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Summary
Particles from cosmic-rays were required to pass through 14 in. Pb above and 10 in. Pb below the apparatus. Knock-on electron events originating in a target above the top section of a three-section cloud chamber operating in a field of 11,000 gauss were detected with the aid of two proportional counters, which sandwiched the top section. Electrons and mu mesons were identified by their behavior in traversing Pb plates above and below the middle section. The target was 23.1 g/cm/sup 2/ of carbon in one experiment and 17.0 g/cm/sup 2/ of paraffin in the other. Energies of the electrons and muons were determined from track curvature measurements, and events accepted only when the electron energy was greater than 100 Mev and the mu energy was from 5 to 50 Bev. The distribution of electron energies was compared with theoretical predictions based on quantum electrodynamics modified by a one-parameter form factor and corrected for energy loss of the electrons before reaching the chamber. The data taken at face value would suggest an excess of events with large momentum transfers (50 to 100 Mev). The uncertainties inherent in this experiment and poor statistics prevented ascribing too much significance to this excess. (auth)
Report Numbers
TID-19789
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: NONR 477(12)
NSA number: NSA-18-004432
OSTI Identifier 4128611
Research organization: Washington. Univ., Seattle.
View MARC record | catkey: 42251705