Negative muon spin precession measurement of the hyperfine states of muonic sodium

Journal Article · Sun May 01 00:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.058501· OSTI ID:20698712

Brewer, J H ^[1]; Ghandi, K ^[2]; Froese, A M ^[3]; Fryer, B A ^[4]

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1. Canadian Institute for Advanced Research and Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (Canada)
2. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
3. Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (Canada)
4. Sechelt, British Columbia (Canada)

Both hyperfine states of muonic {sup 23}Na and the rate R of conversion between them have been observed directly in a high field negative muon spin precession experiment using a backward muon beam with transverse spin polarization. The result in metallic sodium, R=13.7{+-}2.2 {mu}s{sup -1}, is consistent with Winston's prediction in 1963 based on Auger emission of core electrons, and with the measurements of Gorringe et al. in Na metal, but not with their smaller result in NaF. In NaOH we find R=23.5{+-}8 {mu}s{sup -1}, leaving medium-dependent effects ambiguous.

• OSTI ID: 20698712
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 71, Issue 5; Other Information: DOI: 10.1103/PhysRevC.71.058501; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
CONVERSION
ELECTRON EMISSION
ELECTRONS
HYPERFINE STRUCTURE
MUON BEAMS
MUON SPIN RELAXATION
MUONIC ATOMS
MUONS
POLARIZATION
SODIUM
SODIUM 23
SODIUM FLUORIDES
SODIUM HYDROXIDES
SPIN
SPIN ORIENTATION