Laboratory

RIBF Research Division

Research Facility Development Division

Accelerator Applications Research Group

Subnuclear System Research Division

Directly under the Nishina Center

SLOWRI Team

Leader's Picture
Laboratory Head
Hironobu ISHIYAMAD.Sci.
  • Now writing...

Research Areas

SLOWRI is a universal low-energy RI-beam facility at the downstream of BigRIPS at RIBF, which provides a wide variety of short-lived nuclei as high-purity and low-emittance ion beams or stored ions in trap. SLOWRI consists of two kind of gas catchers, He gas catcher with RF carpets for ion guide and Ar gas catcher with resonant laser ionization. The construction has been started from FY2013 and the R&D work is under progress. The precise mass measurements of trans-uranium elements have been successfully performed using SLOWRI prototype and multi-reflection time-of-flight mass spectrograph (MRTOF).

Research Subject

  1. Development and constraction of the next-generation slow RI-beam facility -- SLOWRI
  2. Precision laser spectroscopy of trapped radioactive Beryllium isotope
  3. Development of a multi-reflection time-of-flight mass spectrograph for precision mass measurements of short-lived nuclei
  4. Development of collinear fast beam apparatus for isotope shift measurements
  5. Development of parasitic slow RI-beam using gas cell and resonance laser ionization scheme

List of Selected Publications

  1. Ito, Y., Schury. P., Wada, M., Arai, F., Haba, H., Hirayama, Y., Ishizawa, S., Kaji, D., Kimura, S., Koura, H., MacCormick,. M., Miyatake, H., Moon, J. Y., Morimoto, K., Morita, K., Mukai, M., Murray, I., Niwase, T., Okada, K., Ozawa, A., Rosenbusch, M., Takamine, A., Tanaka, T., Watanabe, Y.X., Wollnik, H. and Yamaki, S.:
    "First Direct Measurements of Nuclieds around Z = 100 with a Multireflection Time-of-Flight Mass Spectrograph"
    Phys. Rev. Lett. 120, 152501 (2018).
  2. Schury, P., Wada, M., Ito, Y., Kaji, D., Arai, F., MacC ormick, M., Murray, I., Haba, H., Jeong, S., Kimura, S., Koura, H., Miyatake, H., Morimoto, K., Morita, K., Ozawa, A., Rosenbusch, M., Reponen, M., Söderström, P.-A., Takamine, A., Tanaka, T., and Wollnik, H.:
    "First online multireflection time-of-flight mass measurements of isomer chains produced by fusionevaporation reactions: Toward identification of superheavy elements via mass spectroscopy"
    Phys. Rev. C 95, 011305(R) (2017).
  3. Sonoda, T., Tsubota, T., Wada, M., Katayama, I., Kojima, T.M., and Reponen, M.:
    "A gas circulation and purification system for gas-cell based low-energy RI-beam production"
    Rev. Sci. Inst. 87, 065104 (2016).
  4. Takamine, A., Wada, M., Okada, K., Sonoda, T., Schury, P., Nakamura, T., Kanai, Y., Kubo, T., Katayama, I., Ohtani, S., Wollnik, H., and Schuessler, H.A.:
    "Hyperfine Structure Constant of the Neutron Halo Nucleus 11Be+"
    Phys. Rev. Lett. 112, 162502 (2014).
  5. Schury, P., Wada, M., Ito, Y., Arai, F., Naimi, S., Sonoda, T., Wollnik, H., Shchepunov, V.A., Smorra, C., and Yuan, C.:
    "A high-resolution multi-reflection time-of-flight mass spectrograph for precision mass measurements at RIKEN/SLOWRI"
    Nucl. Inst. And Meth. Phys. Res. B335, 39 (2014).
  6. Ito, Y., Schury, P., Wada, M., Naimi, S., Sonoda, T., Mita, H., Arai, F., Takamine, A., Okada, K., Ozawa, A., and Wollnik, H.:
    "Single-reference high-precision mass measurement with a multireflection time-of-flight mass spectrograph"
    Phys. Rev. C 88, 011306® (2013)
  7. Wada, M.:
    "Genealogy of gas cells for low-energy RI-beam production"
    Nucl. Inst. Meth. Phys. Res. B 317, 450 (2013).
  8. Takamine, A., Wada, M., Okada, K., Nakamura, T., Schury, P., Sonoda, T., Lioubimov, V., Iimura, H., Yamazaki, Y., Kanai, Y., Kojima, T.M., Yoshida, A., Kubo, T., Katayama, I., Ohtani, S., Wollnik, H., and Schuessler, H.A.:
    "Isotope shift measurements of 11,9,7Be+"
    Eur. Phys. J. A. 10883-5 (2009).
  9. Okada, K., Wada, M., Nakamura, T., Takamine, A., Lioubimov, V., Schury, P., Ishida, Y., Sonoda, T., Ogawa, M., Yamazaki, Y., Kambara, T., Kanai, Y., Kojima, T.M., Yoshida A., Kubo, T., K., Katayama, I., Ohtani, S., Wollnik, H., and Schuessler, H.A.:
    "Precision Measurements of the hyperfine Structure of Laser-Cooled Radioactive 7Be+ ions Produced by Projectile Fragmentation"
    Phys. Rev. Lett. 101, 212502 (2008)
  10. Takamine, A., Wada, M., Ishida, Y., Nakamura, T., Okada, K., Yamazaki, Y., Kambara, T., Kanai, Y., Kojima, T.M., Nakai, Y., Oshima, N., Yoshida, A., Kubo, T., Ohtani, S., Noda, K., Katayama, I., Hostain, P., Varentsov, V., and Wollnik, H.:
    "Space-charge effect in the catcher gas cell of a rf ion guide"
    Rev. Sci. Instrum. 76, 103503 (2005).

 

Page Top