Half-lives and delayed neutron emission probabilities of neutron-rich Li--Al nuclides (US)

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.1435· OSTI ID:5099787

Reeder, P L; Warner, R A; Hensley, W K ^[1]; Vieira, D J; Wouters, J M ^[2]

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1. Pacific Northwest Laboratory, Richland, Washington (USA)
2. Los Alamos National Laboratory, Los Alamos, New Mexico (USA)

Beta-decay half-lives and delayed neutron emission probabilities of very neutron-rich nuclides from Li to Al have been measured by a delayed coincidence technique. Neutron-rich nuclides were produced by reaction of 800-MeV protons on a {sup 232}Th target and were individually identified by use of the time-of-flight isochronous spectrometer. For 16 previously measured nucides, the half-lives determined here agree with literature values within the uncertainties. The previously unmeasured half-lives for {sup 25}F (59{plus minus}40 ms) and {sup 28}Ne (14{plus minus}10 ms) have been determined. Delayed neutron emission has been measured for {sup 12}Be, {sup 14}B, {sup 17}C, {sup 18}N, {sup 25}F, and {sup 28}Ne. Emission probabilities are reported for 19 precursors and upper limits are reported for 12 other nuclides. These data are compared with predictions of several beta-decay models.

• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5099787
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYON REACTIONS
BARYONS
BERYLLIUM 12
BERYLLIUM ISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-DELAYED NEUTRONS
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BORON 14
BORON ISOTOPES
CARBON 17
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
DAYS LIVING RADIOISOTOPES
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FLUORINE 25
FLUORINE ISOTOPES
HADRON REACTIONS
HADRONS
HALF-LIFE
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 100-1000
MILLISEC LIVING RADIOISOTOPES
NEON 28
NEON ISOTOPES
NEUTRON-RICH ISOTOPES
NEUTRONS
NITROGEN 18
NITROGEN ISOTOPES
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PROTON REACTIONS
RADIOISOTOPES
TARGETS
THORIUM 232 TARGET
YEARS LIVING RADIOISOTOPES