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Spin-Isospin Laboratory
Tomohiro UESAKA
Chief scientist
Tomohiro UESAKA (D.Sci.)
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Research Areas

A nucleus is a finite-body quantum system of hadrons and is a self-organizing system governed by the strong interaction. How do "variety" and "regularity" develop and coexist in the nuclear world? We are aiming at clarifying its mechanism through experimental studies of radio-active nuclei produced at the RI Beam Factory.
In particular, the Spin-Isisopn Laboratory pursues research activities putting focus on interplay of spin and isospin which are manifestations of symmetry of nature.
We are, at present, performing experiments with spin-polarized protons to solve the magicity-loss problem appearing far from the beta-stability line.

Research Subject

  1. Experimental studies of radioactive nuclei via direct reactions
  2. Search for undiscovered states through RI-beam induced reactions
  3. Production of spin-polarized nuclei

Related links

  1. RIKEN Nishina Center for Accelerator-Based Science Website_Laboratories PageNew Window

List of Selected Publications

  1. T. Uesaka, S. Sakaguchi et al.,
    "Analyzing power for the proton elastic scattering from neutron-rich 6He nucleus",
    Physical Review C 82 (2010) 021602(R).
  2. K. Yako, M. Sasano, K. Miki, T. Uesaka et al.,
    "Gamow-Teller Strength Distributions in 48Sc by the 48Ca(p, n) and 48Ti(n, p) Reactions and Two-Neutrino Double-β Decay Nuclear Matrix Elements",
    Physical Review Letters 103 (2009) 012503.
  3. H. Sakai, T. Saito, T. Uesaka et al.,
    "Spin Correlations of Strongly Interacting Massive Fermion Pairs as a Test of Bell's Inequality",
    Physical Review Letters 97 (2006) 150405.
  4. T. Wakui, M. Hatano T. Uesaka et al.,
    "Proton polarizing system with Ar-ion laser for image-RI scattering experiments"
    Nuclear Instruments and Methods in Physics Research A 550 (2005) 521-534.
  5. K. Sekiguchi, T. Uesaka et al.,
    "Polarization transfer measurement for 1H(d(vec), p(vec))2H elastic scattering at 135 MeV/nucleon and three-nucleon force effects",
    Physical Review C 70 (2004) 014001-1-17.
  6. V.P. Ladygin, T. Uesaka et al.,
    "Measurement of the tensor analyzing power T20 in the dd→ 3Hen and dd→ 3Hp at intermediate energies and at zero degree",
    Physics Letters B 598 (2004) 47-54.
  7. H. Okamura, T. Uesaka et al.,
    "Model-independent spin-parity determination by the (d, 2He) reaction and possible evidence for a 0- state in 12B",
    Physical Review C 66 (2002) 054602-1-4.
  8. T. Uesaka, J. Nishikawa et al.,
    "3He(d, p)4He reaction at intermediate energies and impulse picture of the (d, p) reactions",
    Physics Letters B 533 (2002) 1-7.
  9. H. Sakai, K. Sekiguchi, T. Uesaka et al.,
    "Precise Measurement of dp Elastic Scattering at 270 MeV and Three-Nucleon Force Effects",
    Physical Review Letters 84 (2000) 5288-5291.
  10. T. Uesaka, et al.,
    "Polarization correlation coefficient for the 3He(vec)(d(vec), p)4He reaction",
    Physics Letters B 467 (1999) 199-204.

Members

Principal Investigator

Tomohiro UESAKA
Chief Scientist

Staff Scientist

Masaki SASANO
Research Scientist

Postdoctoral Fellow

Masanori DOZONO
Postdoctoral Researcher
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