Photoproduction of pi�� mesons from He3 with 340 MeV bremsstrahlung
Blecher, Marvin
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https://hdl.handle.net/2142/25723
Description
Title
Photoproduction of pi�� mesons from He3 with 340 MeV bremsstrahlung
Author(s)
Blecher, Marvin
Issue Date
1968
Doctoral Committee Chair(s)
Hanson, A.O.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
photoproduction
pi mesons
bremsstrahlung
coherent photoproduction
recoil angles
Language
en
Abstract
"Cross sections for the coherent photoproduction
of 71""0 mesons from He3(gammaHe3 -> pi°He 3) were measured for
recoil angles of 200, 300, 400, and 500 from the direction
of the incident photon. A gaseous He3 target was irradiated
by 340 MeV bremsstrahlung; provided by the 'University
of Illinois betatron. The He3 gas was maintained at
liquid hydrogen temperature and at a pressure of slightly
above one atmosphere. The recoil nuclei were observed
with silicon semiconductor detectors. At least one gamma
ray from the pion decay was detected with a lead glass
Cherenkov counter. A coincidence between a semiconductor
detector and the Cherenkov counter triggered an oscilloscope
on which all pulses were then displayed and photographed.
These photographs constitute the experimental
data."
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