PARTIAL AND TOTAL CAPTURE PROBABILITIES OF NEGATIVE MUONS BY C$sup 1$$sup 2$

Journal Article · Tue Jan 15 04:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.129.866· OSTI ID:4760324

Ruel, M; Brennan, J G

The capture probability of negative muons by the C/sup 12/ nucleus is calculated as a sum of partial transition rates to the individual levels of B/sup 12/. The calculation is based on an extreme single-particle shell model. The calculation is an application of the general formalism developed by Morita and Fujii for predicting the transition rate between two definite nuclear states, following muon capture. Regarding bound-state captures, the agreement between theory and experiment is good. An exception is the prediction concerning the 1.67-Mev level of B/sup 12/, the calculated transition rate being too large by a factor whose lower limit is about 2. This casts some doubts on the spin and parity assignraents currently accepted for this level. The total capture probability is too small by a factor of 2, as is the ratio of unbound-to-bound captures. The discrepancy is accounted for in part by the existence of little- known, highly excited virtual states of B/sup 12/. These conclusions are of limited scope because of the use of the single-particle shell model. (auth)

• Research Organization: Catholic Univ. of America, Washington, D.C.
• NSA Number: NSA-17-006986
• OSTI ID: 4760324
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 129; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

NUCLEAR MODELS
PHYSICS
SHELL MODELS