1.Structure of very unstable nuclei with a large excess of proton number to that of neutron, or vice versa:
Our unique methods utilizing lasers to control the spin orientation of unstable nuclei and/or atoms are successful in measurements with high sensitivity and high precision for nuclei far from the stability line. We have performed a series of experiments at TRIUMF in Canada and at RIBF in RIKEN.
2.Structure of high-spin isomers (long-lived excited states) and search for exotic nuclear shape.
A highly sensitive system is used consisting of an in-flight beam separator for fusion products, particle detectors with large solid angle and Ge-detector array for gamma-ray detection. We are searching for new isomers as clues to yet undiscovered exotic deformed states. The experiments are performed at RCNP, Osaka University.
β-delayed neutron and γ-ray spectroscopy of 17C utilizing spin-polarized 17B
H. Ueno, H. Miyatake, Y. Yamamoto, S. Tanimoto, T. Shimoda, N. Aoi, K. Asahi, E. Ideguchi, M. Ishihara, H. Izumi, T. Kishida, T. Kubo, S. Mitsuoka, Y. Mizoi, M. Notani, H. Ogawa, A. Ozawa, M. Sasaki, T. Shirakura, N. Takahashi, K. Yoneda
Phys. Rev. C 87 ( 2013 ) 034316.
Structure of Mg Isotope Studied by β-Decay Spectroscopy of Spin-Polarized Na Isotopes - Shape Coexistence in 30Mg -
T. Shimoda, K. Tajiri, A. Odahara, M. Suga, N. Hamatani, H. Nishibata, J. Takatsu, R. Yokoyama, Y. Hirayama, N. Imai, H. Miyatake, M. Pearson, C.D.P. Levy, K.P. Jackson, R. Leguillon, C. Petrache
Prog. Theor. Phys. ( Kyoto ), Suppl. 196 ( 2012 ) 310.
Structure of 28Mg studied by β-decay spectroscopy of spin-polarized 28Na: The first step of systematic studies on neutron-rich Mg isotopes
K. Kura, K. Tajiri, T. Shimoda, A. Odahara, T. Hori, M. Kazato, T. Masue, M. Suga, A. Takashima, T. Suzuki, T. Fukuchi, Y. Hirayama, N. Imai, H. Miyatake, M. Pearson, C. D. P. Levy, and K. P. Jackson
Phys. Rev. C 85 ( 2012 ) 034310.
Laser spectroscopy of Ag and Au atoms immersed in superfluid helium and its applications to investigate nuclear structures T. Furukawa, Y. Matsuo A. Hatakeyama, T. Kobayashi, K. Asahi, T. Shimoda, OROCHI Collaboration, Physika E 43 ( 2011 ) 843.
Laser spectroscopy of exotic RI atoms in superfluid helium-OROCHI experiment T. Furukawa, Y. Matsuo, A. Hatakeyama, K. Fujikake, Y. Matsuura, T. Kobayashi, T. Shimoda, OROCHI Collaboration, Hyperfine Interact 196 ( 2010 ) 191.
Tadashi Shimoda received the Ph. D. degree from Kyoto University, Japan, in 1980. After having spent many years as assistant and associate professors at College of General Education, and Graduate School of Science, Osaka University, he has been working as a professor at Graduate School of Science, Osaka University, since 2000.