Elsevier

Nuclear Physics A

Volume 312, Issue 3, 27 December 1978, Pages 377-393
Nuclear Physics A

Average polarization of 12B in polarized muon capture

https://doi.org/10.1016/0375-9474(78)90598-5Get rights and content

Abstract

A formula is given for the average polarization of the recoil nucleus in polarized muon capture in a spin zero nucleus. This formula includes the correction due to contributions from the excited states which are produced in the muon captures of the same parent nucleus, through γ-transitions. Average polarizations and partial muon capture rates are numerically obtained in the processes μ + 12C12B(1+, 2+, 2, 1)+ νμ. The nuclear wave functions adopted are of the Co Cohen-Kurath type for the postive parity states and of the most general configurations of 1 ħϵ excitations for the negative parity states. The average polarizations are, generally, less dependent on the nuclear structure than the partial muon capture rates. The experimental data on the average polarization of 12B given by the Louvain-Saclay-ETH group is analyzed with the correction from the excited states. This leads to p − ɡT)/ɡA = 10.3 ± 2.7 for the form factors.

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