Study of the beta-delayed alpha-particle emission of [sup 16]N

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.429· OSTI ID:6379058

Zhao, Z; France, III, R H; Lai, K S; Gai, M ^[1]; Wilds, E L ^[2]; Kryger, R A; Winger, J A ^[3]; Beard, K B ^[4]

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1. A.W. Wright Nuclear Structure Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06511 (United States)
2. Department of Physics, The University of Connecticut, Storrs, Connecticut 06268 (United States)
3. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
4. Department of Physics, Hampton University, Hampton, Virgina 23668 (United States)

The beta-delayed alpha-particle emission of [sup 16]N has been studied, with [sup 16]N nuclei produced using 80 MeV/nucleon [sup 18]O beams on [sup 9]Be targets. The [sup 16]N secondary nuclei were mass analyzed and separated from the reaction products using the Michigan State University A1200 isotope separator. A detector array, including four thin surface barrier detectors, a [ital p]-[ital i]-[ital n] diode, a Ge gamma-ray detector, and a two-dimensional position sensitive parallel plate avalanche counter, was used for implantation and study of the separated nuclei. A beta-decay branching ratio of (1.3[plus minus]0.3)[times]10[sup [minus]5] to the 1[sup [minus]] state at 9.6 MeV and a centroid of 2.35[plus minus]0.05 MeV for the beta-delayed alpha-particle emission were measured. These results are essential for the analysis of a high sensitivity measurement at Yale University of the low-energy beta-delayed alpha-particle emission of [sup 16]N, and for understanding the [sup 12]C([alpha],[gamma])[sup 16]O reaction in the helium burning process in massive stars.

• DOE Contract Number: FG02-91ER40609
• OSTI ID: 6379058
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:1; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA PARTICLES
ALPHA SPECTROSCOPY
BERYLLIUM 9 TARGET
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BRANCHING RATIO
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DECAY
DELAYED ALPHA PARTICLES
GAMMA SPECTROSCOPY
HEAVY ION REACTIONS
ISOTOPES
LIGHT NUCLEI
MASS SPECTROSCOPY
NITROGEN 16
NITROGEN ISOTOPES
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
OXYGEN 18 REACTIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTROSCOPY
TARGETS