Single-particle and collective excitations in Zn66

Ayangeakaa, A. D.; Sensharma, N.; Fulghieri, M.; Janssens, R. V. F.; Chen, Q. B.; Zhu, S.; Alcorta, M.; Carpenter, M. P.; Chowdhury, P.; Gade, A.; Hoffman, C. R.; Kondev, F. G.; Lauritsen, T.; McCutchan, E. A.; Rogers, A. M.; Seweryniak, D.

doi:10.1103/physrevc.105.054315

Single-particle and collective excitations in Zn 66

Journal Article · Mon May 23 00:00:00 EDT 2022 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.105.054315· OSTI ID:1869416

^[1]; ^[2]; Fulghieri, M. ^[2]; ^[2]; ^[3]; Zhu, S. ^[4]; Alcorta, M. ^[5]; ^[6]; Chowdhury, P. ^[7]; ^[8]; Hoffman, C. R. ^[6]; ^[6]; ^[6]; McCutchan, E. A. ^[4]; ^[7]; Seweryniak, D. ^[6]

Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States); Univ of NC - Chapel Hill
Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
East China Normal Univ., Shanghai (China)
Brookhaven National Lab. (BNL), Upton, NY (United States)
TRIUMF, Vancouver, BC (Canada)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of Massachusetts, Lowell, MA (United States)
Michigan State Univ., East Lansing, MI (United States)

Single-particle and collective excitations in ⁶⁶Zn have been investigated via the multinucleon transfer reaction, ²⁶Mg(⁴⁸Ca, α4nγ) using the Gammasphere multidetector array and the Fragment Mass Analyzer. In addition to confirming and complementing the previously known low-spin structure, a new quasi-rotational band comprising several stretched E2 transitions has been established to high spins. However, due to fragmentary nature of its decay, it was not possible to link this sequence to the low-lying states and, thus, determine the absolute excitation energies, spins, and parities unambiguously. Large-scale shell-model calculations employing the JUN45 and jj44b effective interactions are able to successfully describe the low-spin structure and herewith confirm that it is dominated by single-particle excitations. Furthermore, the newly established rotational cascade is compared with known superdeformed bands in the A ≈ 60–70 mass region, and with results of calculations performed within the frameworks of the cranked shell model and the adiabatic and configuration-fixed constrained covariant density functional theory and the quantum particle-rotor model.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Michigan State Univ., East Lansing, MI (United States); Univ. of North Carolina, Chapel Hill, NC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-06CH11357; FG02-08ER41556; FG02-94ER40834; FG02-97ER41041; SC0012704; SC0020451

OSTI ID:: 1869416

Alternate ID(s):: OSTI ID: 1869511
OSTI ID: 1869906
OSTI ID: 1872380

Report Number(s):: BNL-223066-2022-JAAM; PHY-0606007

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 5 Vol. 105; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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