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Garcia FH, Andreoiu C, Ball GC, et al. Absence of Low-Energy Shape Coexistence in ^{80}Ge: The Nonobservation of a Proposed Excited 0_{2}^{+} Level at 639 keV. Phys Rev Lett. 2020;125(17):172501doi: 10.1103/PhysRevLett.125.172501.
Garcia, F. H., Andreoiu, C., Ball, G. C., Bell, A., Garnsworthy, A. B., Nowacki, F., Petrache, C. M., Poves, A., Whitmore, K., Ali, F. A., Bernier, N., Bhattacharjee, S. S., Bowry, M., Coleman, R. J., Dillmann, I., Djianto, I., Forney, A. M., Gascoine, M., Hackman, G., Leach, K. G., Murphy, A. N., Natzke, C. R., Olaizola, B., Ortner, K., Peters, E. E., Rajabali, M. M., Raymond, K., Svensson, C. E., Umashankar, R., Williams, J., & Yates, D. (2020). Absence of Low-Energy Shape Coexistence in ^{80}Ge: The Nonobservation of a Proposed Excited 0_{2}^{+} Level at 639 keV. Physical review letters, 125(17), 172501. https://doi.org/10.1103/PhysRevLett.125.172501
Garcia, F H, et al. "Absence of Low-Energy Shape Coexistence in ^{80}Ge: The Nonobservation of a Proposed Excited 0_{2}^{+} Level at 639 keV." Physical review letters vol. 125,17 (2020): 172501. doi: https://doi.org/10.1103/PhysRevLett.125.172501
Garcia FH, Andreoiu C, Ball GC, Bell A, Garnsworthy AB, Nowacki F, Petrache CM, Poves A, Whitmore K, Ali FA, Bernier N, Bhattacharjee SS, Bowry M, Coleman RJ, Dillmann I, Djianto I, Forney AM, Gascoine M, Hackman G, Leach KG, Murphy AN, Natzke CR, Olaizola B, Ortner K, Peters EE, Rajabali MM, Raymond K, Svensson CE, Umashankar R, Williams J, Yates D. Absence of Low-Energy Shape Coexistence in ^{80}Ge: The Nonobservation of a Proposed Excited 0_{2}^{+} Level at 639 keV. Phys Rev Lett. 2020 Oct 23;125(17):172501. doi: 10.1103/PhysRevLett.125.172501. PMID: 33156683.
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Phys Rev Lett. 2020 Oct 23;125(17):172501. doi: 10.1103/PhysRevLett.125.172501.

Absence of Low-Energy Shape Coexistence in ^{80}Ge: The Nonobservation of a Proposed Excited 0_{2}^{+} Level at 639 keV.

Physical review letters

F H Garcia, C Andreoiu, G C Ball, A Bell, A B Garnsworthy, F Nowacki, C M Petrache, A Poves, K Whitmore, F A Ali, N Bernier, S S Bhattacharjee, M Bowry, R J Coleman, I Dillmann, I Djianto, A M Forney, M Gascoine, G Hackman, K G Leach, A N Murphy, C R Natzke, B Olaizola, K Ortner, E E Peters, M M Rajabali, K Raymond, C E Svensson, R Umashankar, J Williams, D Yates

Affiliations

  1. Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
  2. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  3. Université de Strasbourg, IPHC, 23 rue du Loess 67037 Strasbourg, France.
  4. CNRS, UMR7178, 67037 Strasbourg, France.
  5. Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
  6. Departamento de Física Teórica and IFTUAM/CSIC, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
  7. Department of Physics, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.
  8. Department of Physics, College of Education, University of Sulaimani, P.O. Box 334, Sulaimani, Kurdistan Region, Iraq.
  9. Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
  10. Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
  11. Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8P 5C2, Canada.
  12. Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, Maryland 20742, USA.
  13. Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA.
  14. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3, Canada.
  15. Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA.
  16. Department of Physics, Tennessee Technological University, Cookeville, Tennessee 38505, USA.

PMID: 33156683 DOI: 10.1103/PhysRevLett.125.172501

Abstract

The ^{80}Ge structure was investigated in a high-statistics β-decay experiment of ^{80}Ga using the GRIFFIN spectrometer at TRIUMF-ISAC through γ, β-e, e-γ, and γ-γ spectroscopy. No evidence was found for the recently reported 0_{2}^{+} 639-keV level suggested as evidence for low-energy shape coexistence in ^{80}Ge. Large-scale shell model calculations performed in ^{78,80,82}Ge place the 0_{2}^{+} level in ^{80}Ge at 2 MeV. The new experimental evidence combined with shell model predictions indicate that low-energy shape coexistence is not present in ^{80}Ge.

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