beta. -ray angular distribution from aligned /sup 12/B and /sup 12/N
Journal Article
·
· Phys. Rev. Lett.; (United States)
The coefficients ..cap alpha../sub minus-or-plus/ in the alignment-correlation terms A..cap alpha../sub minus-or-plus/EP/sub 2/(costheta), in /sup 12/B and /sup 12/N decays have been determined; ..cap alpha../sub -/(/sup 12/B) =+(0.006 +- 0.018) %/MeV, and ..cap alpha../sub +/(/sup 12/N) =-(0.273 +- 0.041) %/MeV. The sign of ..cap alpha../sub +/(/sup 12/N) was determined for the first time, by use of an NMR method and measurements on ..beta..-..gamma.. correlation in aligned /sup 12/N. The (..cap alpha../sub -/-..cap alpha../sub +/) result is consistent with strong conservation of vector currents without second-class currents and the (..cap alpha../sub -/+..cap alpha../sub +/) result gives unique information on the time component of the axial-vector current.
- Research Organization:
- Laboratory of Nuclear Studies and Department of Physics, Faculty of Science, Osaka University, Toyonaka, Osaka 560, Japan
- OSTI ID:
- 5907836
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 43:15; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the beta spectral shapes of sup 12 B and sup 12 N
Measurement of the correlation between nuclear alignment and electron direction in /sup 12/B decay as a direct search for the second-class axial-vector current
Measurement of alignment--positron-momentum correlation in /sup 12/N. -->. /sup 12/C(g. s. ) by the spontaneous-level-mixing technique: Improved evidence against a second-class axial current
Journal Article
·
Sat Mar 31 23:00:00 EST 1990
· Physical Review, C (Nuclear Physics); (USA)
·
OSTI ID:6901604
Measurement of the correlation between nuclear alignment and electron direction in /sup 12/B decay as a direct search for the second-class axial-vector current
Journal Article
·
Sun Jan 29 23:00:00 EST 1978
· Phys. Rev. Lett.; (United States)
·
OSTI ID:5166924
Measurement of alignment--positron-momentum correlation in /sup 12/N. -->. /sup 12/C(g. s. ) by the spontaneous-level-mixing technique: Improved evidence against a second-class axial current
Journal Article
·
Mon Jul 31 00:00:00 EDT 1978
· Phys. Rev. Lett.; (United States)
·
OSTI ID:6731060
Related Subjects
651322* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ALIGNMENT
ANGULAR CORRELATION
ANGULAR DISTRIBUTION
AXIAL-VECTOR CURRENTS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
BORON 12
BORON ISOTOPES
CORRELATIONS
CURRENTS
DECAY
DISTRIBUTION
IMPULSE APPROXIMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
NITROGEN 12
NITROGEN ISOTOPES
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RESONANCE
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES
A=6-19
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ALIGNMENT
ANGULAR CORRELATION
ANGULAR DISTRIBUTION
AXIAL-VECTOR CURRENTS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
BORON 12
BORON ISOTOPES
CORRELATIONS
CURRENTS
DECAY
DISTRIBUTION
IMPULSE APPROXIMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
NITROGEN 12
NITROGEN ISOTOPES
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RESONANCE
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES