M Sugawara

Publications (4)0 Total impact

• Source

  Available from: Yuichi Hatsukawa

  Article: Superdeformation in Asymmetric N$>$Z Nucleus $^{40}$Ar

  E. Ideguchi, S Ota, T Morikawa, M Oshima, M Koizumi, Y Toh, A Kimura, H Harada, K. Furutaka, S Nakamura, F. Kitatani, Y. Hatsukawa, T. Shizuma, M Sugawara, H. Miyatake, Y X Watanabe, Y Hirayama, M. Oi
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  ABSTRACT: A rotational band with five $\gamma$-ray transitions ranging from 2$^{+}$ to 12$^{+}$ states was identified in $^{40}$Ar. This band is linked through $\gamma$ transitions from the excited 2$^{+}$, 4$^{+}$ and 6$^{+}$ levels to the low-lying states; this determines the excitation energy and the spin-parity of the band. The deduced transition quadrupole moment of 1.45$^{+0.49}_{-0.31} eb$ indicates that the band has a superdeformed shape. The nature of the band is revealed by cranked Hartree--Fock--Bogoliubov calculations and a multiparticle--multihole configuration is assigned to the band.
  10/2009;
• Article: Dipole bands in 142Gd

  M. Sugawara, H. Kusakari, Y. Igari, K. Terui, K. Myojin, D. Nishimiya, S. Mitarai, M. Oshima, T. Hayakawa, M. Kidera, K. Furutaka, Y. Hatsukawa
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  ABSTRACT: The high spin states of 142Gd were studied via the 111Cd(35Cl,1p3n) reaction at 170 MeV. Three dipole cascades were found, one of which decayed to both the proton high-j particle states and the neutron high-j hole states. These can be classified in the category of "Shears Band" which is introduced by S. Frauendorf.
  Zeitschrift für Physik A Hadrons and Nuclei 05/1997; 358(1):1-2.
• Article: A γ-ray detector array for joint spectroscopy experiments at the JAERI tandem–booster facility

  K. Furuno, M. Oshima, T. Komatsubara, K. Furutaka, T. Hayakawa, M. Kidera, Y. Hatsukawa, M. Matsuda, S. Mitarai, T. Shizuma, T. Saitoh, N. Hashimoto, H. Kusakari, M. Sugawara, T. Morikawa
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  ABSTRACT: A compact array for γ-ray spectroscopy developed for the joint experiment at the Japan Atomic Energy Research Institute is described. It consists of an array of 11 Compton suppressed Ge detectors, a 4π silicon detector array for charged particle measurements, a position-sensitive silicon detector for experiments on Coulomb excitation and a conversion-electron spectrometer. The details of the detectors and new experimental results obtained with the compact array are also described.
  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
• Article: Superdeformation in asymmetric N>Z nucleus 40Ar

  E. Ideguchi, S. Ota, T. Morikawa, M. Oshima, M. Koizumi, Y. Toh, A. Kimura, H. Harada, K. Furutaka, S. Nakamura, F. Kitatani, Y. Hatsukawa, T. Shizuma, M. Sugawara, H. Miyatake, Y.X. Watanabe, Y. Hirayama, M. Oi
  [show abstract] [hide abstract]
  ABSTRACT: A rotational band with five γ-ray transitions ranging from 2+ to 12+ states was identified in 40Ar. This band is linked through γ transitions from the excited 2+, 4+ and 6+ levels to the low-lying states; this determines the excitation energy and the spin–parity of the band. The deduced transition quadrupole moment of indicates that the band has a superdeformed shape. The nature of the band is revealed by cranked Hartree–Fock–Bogoliubov calculations and a multiparticle–multihole configuration is assigned to the band.
  Physics Letters B.