New measurement of the {beta}-{gamma} directional correlation in {sup 22}Na

Journal Article · Mon Feb 01 04:00:00 EST 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.59.1113· OSTI ID:304285

Bowers, C J; Freedman, S J; Fujikawa, B; Macchiavelli, A O; MacLeod, R W; Reich, J; Shang, S Q; Vetter, P A; Wasserman, E ^[1]

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1. Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)

We have measured the {beta}-{gamma} directional correlation coefficient A{sub 22} in the decay of {sup 22}Na to the 2{sup +} 1275 keV excited state of {sup 22}Ne. We find A{sub 22}=(5.3{plus_minus}2.5){times}10{sup {minus}4}. This measurement has higher precision but disagrees with most previous experiments. The value for A{sub 22}, combined with other experimental inputs, gives recoil-order form factors in disagreement with theoretical estimates. This experiment demonstrates the capabilities of Gammasphere as an instrument for precise {beta}-{gamma} correlation measurements. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 304285
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 59; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BETA DECAY
CORRELATIONS
FORM FACTORS
GAMMA DECAY
SODIUM 22