TY - JOUR
T1 - Exploiting dissipative reactions to perform in-beam γ -ray spectroscopy of the neutron-deficient isotopes Ca 38,39
AU - Gade, A.
AU - Weisshaar, D.
AU - Brown, B. A.
AU - Bazin, D.
AU - Brown, K. W.
AU - Charity, R. J.
AU - Farris, P.
AU - Hill, A. M.
AU - Li, J.
AU - Longfellow, B.
AU - Rhodes, D.
AU - Reviol, W.
AU - Tostevin, J. A.
N1 - Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/12
Y1 - 2022/12
N2 - The neutron-deficient Ca isotopes continue to attract attention due to their importance for testing isospin symmetry and their relevance in capture reactions of interest for nova nucleosynthesis and the shape of light curves in Type I x-ray bursts. To date, spectroscopic information on Ca38,39 is largely limited to data on lower-spin excited states. Here, we report in-beam γ-ray spectroscopy of complementary higher-spin, complex-structure states in Ca39 populated in fast-beam-induced, momentum-dissipative processes leading to neutron pickup onto excited configurations of the projectile, Be9(Ca∗38,Ca39+γ)X. Such a dissipative reaction was recently characterized for the case of inelastic scattering of Ca38 off Be9, Be9(Ca38, Ca38+γ)X. Additional data and discussion on the nuclear structure of Ca38 is also presented. An explanation for the more-complex-structure states, populated with small cross sections in one-nucleon knockout reactions, and observed in the tails of their longitudinal momentum distributions, is also offered.
AB - The neutron-deficient Ca isotopes continue to attract attention due to their importance for testing isospin symmetry and their relevance in capture reactions of interest for nova nucleosynthesis and the shape of light curves in Type I x-ray bursts. To date, spectroscopic information on Ca38,39 is largely limited to data on lower-spin excited states. Here, we report in-beam γ-ray spectroscopy of complementary higher-spin, complex-structure states in Ca39 populated in fast-beam-induced, momentum-dissipative processes leading to neutron pickup onto excited configurations of the projectile, Be9(Ca∗38,Ca39+γ)X. Such a dissipative reaction was recently characterized for the case of inelastic scattering of Ca38 off Be9, Be9(Ca38, Ca38+γ)X. Additional data and discussion on the nuclear structure of Ca38 is also presented. An explanation for the more-complex-structure states, populated with small cross sections in one-nucleon knockout reactions, and observed in the tails of their longitudinal momentum distributions, is also offered.
UR - https://www.scopus.com/pages/publications/85143670902
U2 - 10.1103/PhysRevC.106.064303
DO - 10.1103/PhysRevC.106.064303
M3 - Article
AN - SCOPUS:85143670902
SN - 2469-9985
VL - 106
JO - Physical Review C
JF - Physical Review C
IS - 6
M1 - 064303
ER -