TY - THES
AU - Ho, Ernest Chun Yue
PY - 2001
TI - Radiative muon capture by 3He
KW - Thesis/Dissertation
LA - eng
M3 - Text
AB - The rate of the nuclear reaction ³He + μ- —> ³H + vµ + γ has been calculated
by two different methods: the elementary particle model (EPM) approach
and the impulse approximation (IA) approach. The exclusive statistical radiative
muon capture (RMC) rate for photon energy greater than 60 MeV,
Γrmcstat, using the elementary particle model approach is found to be 0.2113 s- 1
and the ordinary muon capture (OMC) rate is 1503 s-1. Several trinucleon
wavefunctions from different types of realistic nucleon potentials are used for
the impulse approximation calculation and it is found that the capture rates
calculated via the IA exhibit slight model dependences, possibly arising from
differences in binding energy predictions, nature of potentials used or partial
wave properties. The impulse approximation version of Γrmcstat ranges from
0.1313 to 0.1387 s-1 and the corresponding OMC rate ranges from 1260 to
1360 s-1. The difference in reaction rates between IA and EPM is larger in
RMC due to some of the extra Adler and Dothan terms. Therefore, a meson
exchange current (MEC) calculation of RMC seems necessary to account for
this discrepancy. [Scientific formulae used in this abstract could not be reproduced.]
N2 - The rate of the nuclear reaction ³He + μ- —> ³H + vµ + γ has been calculated
by two different methods: the elementary particle model (EPM) approach
and the impulse approximation (IA) approach. The exclusive statistical radiative
muon capture (RMC) rate for photon energy greater than 60 MeV,
Γrmcstat, using the elementary particle model approach is found to be 0.2113 s- 1
and the ordinary muon capture (OMC) rate is 1503 s-1. Several trinucleon
wavefunctions from different types of realistic nucleon potentials are used for
the impulse approximation calculation and it is found that the capture rates
calculated via the IA exhibit slight model dependences, possibly arising from
differences in binding energy predictions, nature of potentials used or partial
wave properties. The impulse approximation version of Γrmcstat ranges from
0.1313 to 0.1387 s-1 and the corresponding OMC rate ranges from 1260 to
1360 s-1. The difference in reaction rates between IA and EPM is larger in
RMC due to some of the extra Adler and Dothan terms. Therefore, a meson
exchange current (MEC) calculation of RMC seems necessary to account for
this discrepancy. [Scientific formulae used in this abstract could not be reproduced.]
UR - https://open.library.ubc.ca/collections/831/items/1.0085185
ER - End of Reference