2019
2019-May-23
TO BE DELETED (kept for complation)
To explore the mechanism responsible for the generation of observed matter-antimatter asymmetry in the Universe, the research on fundamental symmetry violations and various fundamental interactions using the laser cooled and trapped heavy elements is being promoted. The understanding of how the symmetry between the matter and antimatter was broken during the evolution of the early universe requires laboratory experiments which search for symmetry violations in the elementary particles such as quarks and leptons; one such phenomenon of our interest is the intrinsic electric dipole moment (EDM) of either elementary or composite systems. In our laboratory, we produce extremely heavy radioactive elements from nuclear fusion reactions. We trap the heavy unstable atoms and cool them using intense laser beams in order to realize the extreme quantum state of matter such as the Bose-Einstein condensate (BEC), which will be used later for the detection of the EDM signal. The construction of a facility containing high density of laser cooled radioactive atoms is in progress, and it serves as a center for carrying out several studies on fundamental symmetries.
2017
2017-Nov-20
TO BE DELETED (kept for compilation)
CNS RI beam separator – CRIB is maintained and operated by the Nuclear Astrophysics Group in Center for Nuclear Study, University of Tokyo. CRIB, producing low-energy and high-intensity RI beam by direct reactions, is a unique apparatus, one could hardly find a similar one even in the facilities all over the world. Making use of the uniqueness of CRIB, we are extensively studying the following topics:
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Direct/indirect measurements of important reactions in nuclear astrophysics.
Using the low-energy, low-mass and proton-rich beams at CRIB, a systematic study has been made for the nucleosynthesis of proton-rich region. We aim to understand the nucleosynthesis in a high-temperature phenomena such as supernovae, and production of p-nuclei. -
Studying nuclear resonance structure by resonant scattering method.
We are interested in studying exotic nucluar structure, such as proton halo and alpha cluster. We use a special method to observe nuclear resonances, and derive information on the nuclear structure.
2016
2016-May-11
We are studying variety and regularity in nuclear system under various extreme conditions, such as neutron-/proton-rich nuclei, rapidly rotating nuclei, highly excited nuclei, and so on, by using characteristic nuclear reactions and measurements of decay particles.
We aim at microscopic understandings of synthesis and evolution of matter via symmetries, their breakings, and recovering modes appearing in the quantum many-body system of two kinds of fermions, the proton and the neutrons.
We are developing posistion sensitive Ge detector array GRAPE and promoting SHARAQ projects.
Web of NUSPEQ Group
2016-Mar-10
The components of nucleus, neutron and proton, have their spins and isospins and their combination leads to various aspects of nucleus. Nuclear structure has been studied by manipulating these quantum numbers as well as the internal energy of nuclei by scattering and other experiments. RI beams provides us of a new means of manipulation while RI beams themselves are of keen interest. We are exploring new aspects of nucleus by using the high-resolution magnetic spectrometer SHARAQ, the active target system, and other apparatuses.