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Title: High spin structure of $$\mathrm{^{39}Ar}$$ and the FSU cross-shell interaction

Abstract

High-spin states in $$\mathrm{^{39}Ar}$$ were populated using the $$\mathrm{^{27}Al(^{14}C,} pn)$$ reaction at 25.6 MeV. The de-exciting $γ$ rays were measured with the FSU $γ$ detector array along with evaporation protons in a Si $E-ΔE$ telescope. The known high-spin level scheme was extended up to over 11 MeV with a dozen new levels above the neutron decay threshold. The decay pattern appears somewhat atypical for heavy-ion fusion-evaporation reactions. The structure of $$\mathrm{^{39}Ar}$$ is discussed in terms of the new FSU cross-shell $spsdpf$ interaction fitted to a wide range of nuclei. This interaction has proved quite successful in accounting for the level scheme of $$\mathrm{^{39}Ar}$$, including the previously suggested fully aligned $$πf_{7/2} Ⓧ νf_{7/2}17/2^+$$ state and previously discovered analogs of the lowest states in $$\mathrm{^{39}Cl}$$.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1574995
Alternate Identifier(s):
OSTI ID: 1546432
Grant/Contract Number:  
[NA0003841; SC0009883; AC02-05CH11231]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
[ Journal Volume: 100; Journal Issue: 1]; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Abromeit, B., Tabor, S. L., Tripathi, Vandana, Lubna, R. S., Caussyn, D., Dungan, R., Kravvaris, K., Rubino, E., Tai, P. -L., and Volya, A. High spin structure of $\mathrm{^{39}Ar}$ and the FSU cross-shell interaction. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.014310.
Abromeit, B., Tabor, S. L., Tripathi, Vandana, Lubna, R. S., Caussyn, D., Dungan, R., Kravvaris, K., Rubino, E., Tai, P. -L., & Volya, A. High spin structure of $\mathrm{^{39}Ar}$ and the FSU cross-shell interaction. United States. doi:10.1103/PhysRevC.100.014310.
Abromeit, B., Tabor, S. L., Tripathi, Vandana, Lubna, R. S., Caussyn, D., Dungan, R., Kravvaris, K., Rubino, E., Tai, P. -L., and Volya, A. Tue . "High spin structure of $\mathrm{^{39}Ar}$ and the FSU cross-shell interaction". United States. doi:10.1103/PhysRevC.100.014310.
@article{osti_1574995,
title = {High spin structure of $\mathrm{^{39}Ar}$ and the FSU cross-shell interaction},
author = {Abromeit, B. and Tabor, S. L. and Tripathi, Vandana and Lubna, R. S. and Caussyn, D. and Dungan, R. and Kravvaris, K. and Rubino, E. and Tai, P. -L. and Volya, A.},
abstractNote = {High-spin states in $\mathrm{^{39}Ar}$ were populated using the $\mathrm{^{27}Al(^{14}C,} pn)$ reaction at 25.6 MeV. The de-exciting $γ$ rays were measured with the FSU $γ$ detector array along with evaporation protons in a Si $E-ΔE$ telescope. The known high-spin level scheme was extended up to over 11 MeV with a dozen new levels above the neutron decay threshold. The decay pattern appears somewhat atypical for heavy-ion fusion-evaporation reactions. The structure of $\mathrm{^{39}Ar}$ is discussed in terms of the new FSU cross-shell $spsdpf$ interaction fitted to a wide range of nuclei. This interaction has proved quite successful in accounting for the level scheme of $\mathrm{^{39}Ar}$, including the previously suggested fully aligned $πf_{7/2} Ⓧ νf_{7/2}17/2^+$ state and previously discovered analogs of the lowest states in $\mathrm{^{39}Cl}$.},
doi = {10.1103/PhysRevC.100.014310},
journal = {Physical Review C},
number = [1],
volume = [100],
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

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