74 citations · 797 across the 33 of their papers we have counts for
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Shell model study for neutron-rich sd-shell nuclei
Kazunari Kaneko, Yang Sun, Takahiro Mizusaki +1
The microscopic structure of neutron-rich sd-shell nuclei is investigated by using the spherical shell-model in the sd-pf valence space with the extended pairing plus quadrupole-qu…
Isospin symmetry breaking at high spins in the mirror pair 67Se and 67As
K. Kaneko, S. Tazaki, T. Mizusaki +3
Recent experimental data have revealed large mirror energy differences (MED) between high-spin states in the mirror nuclei 67Se and 67As, the heaviest pair where MED have been dete…
Characteristics of the 21/2^+ isomer in 93Mo: toward the possibility of enhanced nuclear isomer decay
M. Hasegawa, Y. Sun, S. Tazaki +2
To discuss whether an enhanced isomer decay is a preferred process in a plasma environment it is required to know the structure of the isomer as well as the nearby states. The spin…
Rotation alignment in neutron-rich Cr isotopes: A probe of deformed single-particle levels across N=40
Yingchun Yang, Yang Sun, Kazunari Kaneko +1
Recent experiments have reached the neutron-rich Cr isotope with N=40 and confirmed enhanced collectivity near this sub-shell. The current data focus on low-spin spectroscopy only,…
Shell-model Hamiltonian from self-consistent mean-field model: nuclei
Kazunari Kaneko, Takahiro Mizusaki, Yang Sun +1
We propose a procedure to determine the effective nuclear shell-model Hamiltonian in a truncated space from a self-consistent mean-field model, e.g., the Skyrme model. The paramete…
Shell model study of single-particle and collective structure in neutron-rich Cr isotopes
K. Kaneko, Y. Sun, M. Hasegawa +1
The structure of neutron-rich Cr isotopes is systematically investigated by using the spherical shell model. The calculations reproduce well the known energy levels for the even-ev…
Structure of upper g9/2-shell nuclei and shape effect in the 94Ag isomeric states
K. Kaneko, Y. Sun, M. Hasegawa +1
Using a shell model which is capable of describing the spectra of upper -shell nuclei close to the line, we study the structure of two isomeric states and $2…
Enhancement of and low excitation of the second 0 state near N=40 in Ge isotopes
M. Hasegawa, T. Mizusaki, K. Kaneko +1
The long-standing problem of dramatic structure change near N=40 in Ge isotopes is investigated by means of large-scale shell model calculation. The analysis of simulated calculati…
Phase transition in exotic nuclei along the line
M. Hasegawa, K. Kaneko, T. Mizusaki +1
The abrupt structure change from the nuclei of to those of is investigated by means of shell model calculations. The basic features of the even-even and o…
Magicity and occurrence of band with enhanced B(E2) in neutron-rich nuclei 68Ni and 90Zr
K. Kaneko, M. Hasegawa, T. Mizusaki +1
Experimental energy spectrum and B(E2) values in 68Ni and 90Zr indicate a double-magic character in these neutron-rich nuclei with N or Z=40. The data nevertheless do not show any…
Breaking of nucleon Cooper pairs at finite temperature in 93-98Mo
K. Kaneko, M. Hasegawa, U. Agvaanluvsan +9
The S shape of the canonical heat capacity is known as a signature of the pairing transition and along an isotopic chain it is significantly more pronounced for nuclei with an even…
Contour integral method for thermal and quantal fluctuations
K. Kaneko, M. Hasegawa
The partition function by means of the static path approximation (SPA) plus the random-phase approximation (RPA) treatment can be written as a contour integral form without solving…
Unique features of structure in an odd-proton nucleus As
M. Hasegawa, K. Kaneko, T. Mizusaki
We apply a large-scale shell model to the study of proton-rich odd-mass nuclei with . Calculations predict unexpected structure in the As nucleus for which a de…
Proton-neutron pairing energies in N=Z nuclei at finite temperature
K. Kaneko, M. Hasegawa
Thermal behavior of isoscalar and isovector proton-neutron (pn) pairing energies at finite temperature are investigated by the shell model calculations. These pn pairing energies c…
Quenching of pairing gap at finite temperature in 184W
K. Kaneko, M. Hasegawa
We extract pairing gap in W at finite temperature for the first time from the experimental level densities of W, W, and W using "thermal" odd-even m…
Structure of isomeric states in 66As and 67As
M. Hasegawa, Y. Sun, K. Kaneko +1
Strong residual correlations between neutrons and protons in N ~ Z systems can lead to unusual structure. Using the spherical shell model, we show that a low-excitation shape isome…
An alternative understanding of mass formulas in terms of nuclear structure
M. Hasegawa, K. Kaneko
A typical form of mass formula is re-explained in terms of nuclear structure. For nuclei, we propose to start with the shell model picture and to consider the T=0 $…
Anomalous behavior of the first excited 0 state in nuclei
K. Kaneko, R. F. Casten, M. Hasegawa +5
A study of the energies of the first excited states in all even-even 8 nuclei reveals an anomalous behavior in some nuclei with = , 2. We analyze…
Microscopic analysis of T=1 and T=0 proton-neutron correlations in nuclei
M. Hasegawa, K. Kaneko
The competition between the isovector (T=1) and isoscalar (T=0) proton-neutron () correlations in nuclei is investigated by calculating their correlation energies with a…
Shape transition and oblate-prolate coexistence in N=Z fpg-shell nuclei
K. Kaneko, M. Hasegawa, T. Mizusaki
Nuclear shape transition and oblate-prolate coexistence in nuclei are investigated within the configuration space (, , , and ). We per…
Particle alignments and shape change in Ge and Ge
M. Hasegawa, K. Kaneko, T. Mizusaki
The structure of the nuclei Ge and Ge is studied by the shell model on a spherical basis. The calculations with an extended Hamiltonian in the co…
Proton-neutron alignment in the yrast states of Ge and Ge
M. Hasegawa, K. Kaneko, T. Mizusaki
The Ge and Ge nuclei are studied by means of the shell model with the extended Hamiltonian, which succeeds in reproducing experimentally observed energy levels…
Pairing transition of nuclei at finite temperature
K. Kaneko, M. Hasegawa
Pairing transition at finite temperature was investigated by the shell model and BCS calculations. The definitive signature of pairing transition is identified by a "transition tem…
Competition between isoscalar and isovector pairing correlations in N=Z nuclei
Kazunari Kaneko, Munetake Hasegawa
We study the isoscalar (T=0) and isovector (T=1) pairing correlations in N=Z nuclei. They are estimated from the double difference of binding energies for odd-odd N=Z nuclei and th…