Measurement of the beta-delayed alpha-particles from the broad 1{sup -} state at 9.6 MeV in {sup 16}O

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243709

Zhao, Z; Lai, K S; Gai, M ^[1]

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1. and others

The authors have measured the beta-decay of {sup 16}N to the broad 1{sup {minus}} state at 9.6 MeV in {sup 16}O, by observing the beta-delayed alpha-particles and gamma-rays from a {sup 16}N (radioactive) beam, extracted from the MSU A1200 separator, and implanted into an array of four surface barrier Si detectors of 25-50 {mu}m thickness. A large volume (120%) hyperpure Ge detector was used to observe beta-delayed gamma-emission. They extract the beta-decay branching ratio of 1.3(3)x10{sup {minus}5} for this 1{sup {minus}} state. This measurement also allows the authors to extract the centroid of the broad alpha-particle spectrum of the 1{sup {minus}} state which is essential for estimating the {open_quotes}zero{close_quotes} target thickness line shape of this decay. These data where used to normalize and calibrate the recent Yale experiment of the beta-delayed alpha-particle emission of {sup 16}N.

• DOE Contract Number: FG02-91ER40609
• OSTI ID: 243709
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA DECAY
BETA-MINUS DECAY
EXCITED STATES
NITROGEN 16
OXYGEN 16