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Title: Particle decays of levels in N 11 , 12 and O 12 investigated with the invariant-mass method

Journal Article · · Physical Review C
 [1]; ORCiD logo [2];  [2];  [2];  [2];  [2];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [4];  [4] more »;  [4];  [5] « less
  1. Washington Univ., St. Louis, MO (United States); Washington University
  2. Washington Univ., St. Louis, MO (United States)
  3. Michigan State Univ., East Lansing, MI (United States)
  4. Univ. of Connecticut, Storrs, CT (United States)
  5. Western Michigan Univ., Kalamazoo MI (United States)
+ Show Author Affiliations

Particle-decaying states of the light nuclei 11,12N and 12O were studied using the invariant-mass method. The decay energies and intrinsic widths of a number of states were measured, and the momentum correlations of three-body decaying states were considered. A second $2p$-decaying 2+ state of 12O was observed for the first time, and a higher-energy 12O state was observed in the 4$$p$$+2α decay channel. This 4$$p$$+2α channel also contains contributions from fissionlike decay paths, including 6Beg.s.+6Beg.s.. Analogs to these states in 12O were found in 12N in the 2$$p$$+ 10B and 2$$p$$+α+6Li channels. The momentum correlations for the prompt 2$$p$$ decay of 12Og.s. were found to be nearly identical to those of 16Neg.s., and the correlations for the new 2+ state were found to be consistent with sequential decay through excited states in 11N. The momentum correlations for the 2$$^+_1$$ state in 12O provide a new value for the 11N ground-state energy. Finally, the states in 12N/12O that belong to the A=12 isobaric sextet do not deviate from the quadratic isobaric multiplet mass equation form

Research Organization:
Washington Univ., St. Louis, MO (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-87ER40316
OSTI ID:
1546982
Journal Information:
Physical Review C, Journal Name: Physical Review C Journal Issue: 2 Vol. 100; ISSN PRVCAN; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

2 p decays of O 12 excited states journal November 2019
Beyond the proton drip line: Bayesian analysis of proton-emitting nuclei journal January 2020
Beyond the proton drip line: Bayesian analysis of proton-emitting nuclei text January 2019

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS