TY - JOUR
T1 - Compressional-mode resonances in the molybdenum isotopes
T2 - Emergence of softness in open-shell nuclei near A = 90
AU - Howard, K. B.
AU - Garg, U.
AU - Itoh, M.
AU - Akimune, H.
AU - Fujiwara, M.
AU - Furuno, T.
AU - Gupta, Y. K.
AU - Harakeh, M. N.
AU - Inaba, K.
AU - Ishibashi, Y.
AU - Karasudani, K.
AU - Kawabata, T.
AU - Kohda, A.
AU - Matsuda, Y.
AU - Murata, M.
AU - Nakamura, S.
AU - Okamoto, J.
AU - Ota, S.
AU - Piekarewicz, J.
AU - Sakaue, A.
AU - Şenyiğit, M.
AU - Tsumura, M.
AU - Yang, Y.
N1 - Funding Information:
KBH acknowledges the support of the Arthur J. Schmitt Foundation , as well as the Liu Institute for Asia and Asian Studies, University of Notre Dame . This work has been supported in part by the National Science Foundation (Grant No. PHY-1713857 ) and the U.S. Department of Energy Office of Nuclear Physics under Award Number DE-FG02-92ER40750 .
Publisher Copyright:
© 2020
PY - 2020/8/10
Y1 - 2020/8/10
N2 - “Why are the tin isotopes soft?” has remained, for the past decade, an open problem in nuclear structure physics: models which reproduce the isoscalar giant monopole resonance (ISGMR) in the “doubly-closed shell” nuclei, 90Zr and 208Pb, overestimate the ISGMR energies of the open-shell tin and cadmium nuclei, by as much as 1 MeV. In an effort to shed some light onto this problem, we present results of detailed studies of the ISGMR in the molybdenum nuclei, with the goal of elucidating where–and how–the softness manifests itself between 90Zr and the cadmium and tin isotopes. The experiment was conducted using the 94,96,98,100Mo(α,α′) reaction at Eα=386 MeV. A comparison of the results with relativistic, self-consistent Random-Phase Approximation calculations indicates that the ISGMR response begins to show softness in the molybdenum isotopes beginning with A=92.
AB - “Why are the tin isotopes soft?” has remained, for the past decade, an open problem in nuclear structure physics: models which reproduce the isoscalar giant monopole resonance (ISGMR) in the “doubly-closed shell” nuclei, 90Zr and 208Pb, overestimate the ISGMR energies of the open-shell tin and cadmium nuclei, by as much as 1 MeV. In an effort to shed some light onto this problem, we present results of detailed studies of the ISGMR in the molybdenum nuclei, with the goal of elucidating where–and how–the softness manifests itself between 90Zr and the cadmium and tin isotopes. The experiment was conducted using the 94,96,98,100Mo(α,α′) reaction at Eα=386 MeV. A comparison of the results with relativistic, self-consistent Random-Phase Approximation calculations indicates that the ISGMR response begins to show softness in the molybdenum isotopes beginning with A=92.
KW - Collectivity
KW - Equation of state
KW - Giant resonance
KW - Nuclear incompressibility
KW - Softness
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U2 - 10.1016/j.physletb.2020.135608
DO - 10.1016/j.physletb.2020.135608
M3 - Article
AN - SCOPUS:85087924171
SN - 0370-2693
VL - 807
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 135608
ER -