Nuclear Spectroscopy Laboratory

The research group conducts studies on techniques for the production of spin-controlled radioactive-isotope beams (RIBs) and applies it to research in nuclear physics, fundamental physics, and materials science. Microscopic investigation of physical and chemical processes is performed based on the techniques of nuclear spectroscopy that take advantage of intrinsic nuclear properties and phenomena (e.g., spins, electromagnetic nuclear moments, decay modes, etc.). In particular, the precession/resonance of an oriented nuclear spin under an external field is observed via a change in the angular distribution of radiation in the study of nuclear structures through nuclear moments. The same methods are used to investigate condensed matter, such as semiconductors, ferromagnets, fullerenes, and systems with dilute magnetic impurities, by exploiting RIs as microscopic probes into them. All these research activities are to be extended to a wide variety of unstable nuclei provided by the RI Beam Factory (RIBF). A method of producing beams of highly spin-polarized RIs, taking full advantage of the RIBF, is being developed.

Research Subjects

• Nuclear Spectroscopy with stopped/slowed-down RI beams
• R&D studies on the production of spin-oriented RI beams and their applications
• Application of RI probes

Publications

1. Ueno, H., Miyatake H., Yamamoto Y., Tanimoto S., Shimoda T., Aoi N., Asahi K., Ideguchi E., Ishihara M., Izumi H., Kishida T., Kubo T., Mitsuoka S., Mizoi Y., Notani M., Ogawa H., Ozawa A., Sasaki M., Shirakura T., Takahashi N., and Yoneda K.
   Beta-delayed neutron and gamma-ray spectroscopy of 17C utilizing spin-polarized 17B
   Phys. Rev. C 87, 034316 (2013)
2. Ichikawa Y., Ueno H., Ishii Y., Furukawa T., Yoshimi A., Kameda D., Watanabe H., Aoi N., Asahi K., Balabanski D.L., Chevrier R., Daugas J.-M., Fukuda N., Georgiev G., Hayashi H., Iijima H., Inabe N., Inoue T., Ishihara M., Kubo T., Nanao T., Ohnishi T., Suzuki K., Tsuchiya M., Takeda H., Rajabali M.M.
   Production of spin-controlled rare isotope beams
   Nature Phys. 8, 918-922 (2012)
3. Shimada K., Ueno H., Neyens G., Asahi K., Balabanski D.L., Daugas J.-M., Depuydt M., De Rydt M., Gaudefroy L., Grevy S., Hasama Y., Ichikawa Y., Kameda D., Morel P., Nagatomo T., Perrot L., Stodel Ch., Thomas J.-C., Utsuno Y., Vanderheijden W., Vermeulen N., Vingerhoets P., Yagi E., Yoshida K., Yoshimi A.
   Erosion of N = 20 shell in 33Al investigated through the ground-state electric quadrupole moment
   Phys. Lett. B 714, 246-250 (2012)
4. Chevrier R., Daugas J.-M., Gaudefroy L., Ichikawa Y., Ueno H., Hass M., Cottenier S., Aoi N., Asahi K., Balabanski D.L., Fukuda N., Furukawa T., Georgiev G., Hayashi H., Iijima H., Inabe N., Inoue T., Ishihara M., Ishii Y., Kameda D., Kubo T., Nanao T., Neyens G., Ohnishi T., Rajabali M.M., Suzuki K., Takeda H., Tsuchiya M., Vermeulen N., Watanabe H., Yoshimi A.
   Is the 7/21- isomer state of 43S spherical?
   Phys. Rev. Lett. 108, 162501 (2012)
5. Imai, N., Hirayama, Y., Watanabe, Y.X., Teranishi, T., Hashimoto, T., Hayakawa, S., Ichikawa, Y., Ishiyama, H., Jeong, S.C., Kahl, D., Kubono, S., Miyatake, H., Ueno, H., Yamaguchi, H., Yoneda, K., and Yoshimi, A.
   Isobaric analog resonances of the N = 21 nucleus 35Si
   Phys. Rev. C 85, 034313 (2012)
6. Adachi, T., Fujita Y., Bacher, A.D., Berg, G.P.A., Black, T., De Frenne, D., Foster, C.C., Fujita, H., Fujita, H., Hatanaka, K., Honma, M., Jacobs, E., Jänecke, J., Kanzaki, K., Katori, K., Nakanishi, K., Negret, A., Otsuka, T., Popescu, L., Roberts, D.A.
   High-resolution study of Gamow-Teller transitions via the 54Fe(3He, t)54Co reaction
   Phys. Rev. C 85, 024308 (2012)
7. Yoshida Y., Suzuki K., Kobayashi Y., Nagatomo T., Akiyama Y., Yukihira K., Hayakawa K., Ueno H., Yoshimi A., Nagae D., Asahi K., Langouche G.
   57Fe charge states in MC-Si solar cells under light illumination after GeV-implantation of 57Mn
   Hyperfine Int. 204, 133-137 (2012)
8. Ichikawa Y., Ueno H., Ishii Y., Furukawa T., Yoshimi A., Kameda D., Watanabe H., Aoi N., Asahi K., Balabanski D.L., Chevrier R., Daugas J.-M., Fukuda N., Georgiev G., Hayashi H., Iijima H., Inabe N., Inoue T., Ishihara M., Kubo T., Nanao T., Ohnishi T., Suzuki K., Tsuchiya M., Takeda H., Rajabali M.M.
   Production of spin-aligned RI beam via two-step fragmentation with dispersion matching
   J. Phys. Con. Ser. 381, 012090 (2012)
9. Nagatomo, T., Ueno, H., Mihara, M., Matsuta, K., Yoshimi, A., Ichikawa, Y., Yamada, K., Kawamura., H., Ozawa, A., Moriguchi, T., Ishibashi, Y., Asahi, K., Uchida, M., Suzuki, K., Inoue, T., Hasama, Y., Iijima, H., Sumikama, T., Fukuda, M., Minnamisono, T.
   Precise nuclear moments of extremely proton-rich nucleus 23Al
   Hyperfine Interact 198, 103-107 (2010)
10. Mihara, M., Izumikawa, T., Ueno, H., Matsuta, K., Nishimura, D., Nagatomo, T., Moriguchi, T., Ito, Y., Nagae, D., Fukuda, M., Yoshimi, A., Yamada, K., Takechi, M., Ichikawa, Y., Momota, S., Hirayama, Y., Ohtsubo, T., Suzuki, S., Kubo, T., Namiki, Y., Ozaw
    Beta-NMR measurement of 58Cu in Si
    Hyperfine Interact 197, 143-147 (2010)