Study of beta decay half-lives and beta-delayed multi-particle final states at Michigan State University

Conference · Thu Dec 10 00:00:00 EST 1987 · AIP Conf. Proc.; (United States)

OSTI ID:5463153

Mikolas, D; Brown, B A; Benenson, W; Chen, Y; Curtin, M S; Harwood, L H; Kashy, E; Nolen, Jr, J A; Samuel, M; Sherrill, B; others, and

The first five years of operation of the Reaction Product Mass Separator (RPMS) at Michigan State University has produced information important for understanding the structure of many nuclei in the p and sd shells. We discuss the design and operation of the RPMS. The products of projectile fragmentation-like reactions leave the mass separator with a much greater range than products separated with standard on-line separators. We have taken advantage of this extended range distribution by implanting exotic species within silicon detectors, and detecting the decay products directly. Using this technique, we have measured the beta-decay half-lives of /sup 14/Be, /sup 15/B, /sup 17/B, /sup 17/C and /sup 19/N. We have also measured the beta-delayed alpha emission from /sup 18/N. By containing the total charged-particle decay energy of nuclear states left excited by beta decay within a single silicon detector, we have measured beta decay branching ratios of /sup 9/C, which always produces a delayed three-body final state. These new measurements yield beta-decay and particle decay matrix elements that were otherwise nearly impossible to determine if only one of the three particles were detected.

• Research Organization: Department of Physics and Astronomy, and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321
• OSTI ID: 5463153
• Report Number(s): CONF-870970-; TRN: 88-012536
• Journal Information: AIP Conf. Proc.; (United States), Vol. 164:1; Conference: 5. international conference on nuclei far from stability, Lake Rosseau, Canada, 14 Sep 1987
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 14
BETA DECAY
BORON 15
BORON 17
CARBON 17
CARBON 9
HEAVY ION REACTIONS
FRAGMENTATION
NITROGEN 18
NITROGEN 19
ALPHA SPECTRA
EXPERIMENTAL DATA
HALF-LIFE
NEUTRON-RICH ISOTOPES
PROTON SPECTRA
ALKALINE EARTH ISOTOPES
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORON ISOTOPES
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DECAY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
INFORMATION
ISOTOPES
LIGHT NUCLEI
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SPECTRA
651320* - Nuclear Properties & Reactions
A=6-19
Experimental