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Title: Mass determination near N = 20 for Al and Na isotopes

We report on the mass measurements of 31;32Na and 29;34;35Al, performed with the TITAN Penning trap mass spectrometer at TRIUMF. The mass excesses were found to be 12246(14) keV and 18638(37) keV for 31;32Na and -18207:77(37) keV, -3000:5(29) keV, and -223:7(73) keV for 29;34;35Al, respectively. Our measurements con rm the observation of a crossover in the two-neutron separation energies of 33Mg and 34Al. We did not observe the recently reported, long-lived, isomeric state of 34Al, but, based on the previously measured half-lives, the mass value of the ground state was determined.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [4] ;  [1] ;  [2] ;  [6] ;  [7] ;  [5] ;  [8] ;  [4] ;  [9] ;  [1] ;  [10] ;  [11] ;  [9] ;  [11] more »;  [11] ;  [12] ;  [1] « less
  1. Univ. of British Columbia, Vancouver, BC (Canada); TRIUMF, Vancouver, BC (Canada)
  2. Westfalische Wilhelms-Univ., Munster (Germany)
  3. Simon Fraser Univ., Burnaby, BC (Canada)
  4. TRIUMF, Vancouver, BC (Canada)
  5. TRIUMF, Vancouver, BC (Canada); Univ. of Manitoba, (Canada)
  6. Univ. of Manitoba (Canada)
  7. TRIUMF, Vancouver, BC (Canada); Max Planck Inst. fur Kernphysik, Heidelberg (Germany)
  8. TRIUMF, Vancouver, BC (Canada); Texas A & M Univ., College Station, TX (United States)
  9. TRIUMF, Vancouver, BC (Canada); Simon Fraser Univ., Burnaby, BC (Canada)
  10. TRIUMF, Vancouver, BC (Canada); Westfalische Wilhelms- Univ., Munster (Germany)
  11. Univ. of Calgary, AB (Canada)
  12. Univ. of Paris (France)
Publication Date:
Report Number(s):
LLNL-JRNL-706539
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US1703209
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 96; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1399707