Isao Tanihata

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Soil deposition density maps of gamma-ray emitting radioactive nuclides from the Fukushima Dai-ichi Nuclear Power Plant (NPP) accident were constructed on the basis of results from large-scale soil sampling. In total 10,915 soil samples were collected at 2168 locations. Gamma rays emitted from the samples were measured by Ge detectors and analyzed using a(More)
How does nature hold together protons and neutrons to form the wide variety of complex nuclei in the Universe? Describing many-nucleon systems from the fundamental theory of quantum chromodynamics has been the greatest challenge in answering this question. The chiral effective field theory description of the nuclear force now makes this possible but(More)
The RLGS (Restriction Landmark Genome Scanning) method was originally developed as a powerful method for enabling viewing of thousands of restriction landmarks. It offers a tool for obtaining information about genetic loci, with a single RLGS profile displaying approximately 2000 restriction landmarks as spots. One of the most useful applications is RLGS(More)
The first measurement of the momentum distribution for one-neutron removal from (24)O at 920A MeV performed at GSI, Darmstadt is reported. The observed distribution has a width (FWHM) of 99 +/- 4 MeV/c in the projectile rest frame and a one-neutron removal cross section of 63 +/- 7 mb. The results are well explained with a nearly pure 2s_{1/2} neutron(More)
The masses of the radioactive nuclei (46)V and its decay daughter (46)Ti have been measured with the Canadian Penning Trap on-line Penning trap mass spectrometer to a precision of 1 x 10(-8). A Q(EC) value of 7052.90(40) keV for the superallowed beta decay of (46)V is obtained from the difference of these two masses. With this precise Q value, the Ft value(More)
Charge-changing cross sections σ(cc) of stable and unstable nuclei ((9-11)Be, (14-16)C, and (16-18)O) on a carbon target were investigated at 300  MeV/nucleon. A phenomenological analysis based on the Glauber theory indicates an approximate, but universal, scaling of σ(cc) over a wide range of A/Z. This allows the determination of the density distributions(More)
M. Bowry,1 Zs. Podolyák,1 S. Pietri,2 J. Kurcewicz,2 M. Bunce,1 P. H. Regan,1 F. Farinon,2 H. Geissel,2,3 C. Nociforo,2 A. Prochazka,2 H. Weick,2 N. Al-Dahan,1 N. Alkhomashi,1 P. R. P. Allegro,4 J. Benlliure,5 G. Benzoni,6 P. Boutachkov,2 A. M. Bruce,7 A. M. Denis Bacelar,7 G. F. Farrelly,1 J. Gerl,2 M. Górska,2 A. Gottardo,8 J. Grębosz,9 N. Gregor,2 R.(More)
The chemical composition of plant leaves often reflects environmental contamination. The authors analyzed images of plant leaves to investigate the regional radioactivity ecology resulting from the 2011 accident at the Fukushima No. 1 nuclear power plant, Japan. The present study is not an evaluation of the macro radiation dose per weight, which has been(More)
Can we determine the equation of state of asymmetric nuclear matter using unstable nuclei? Kazuhiro Oyamatsu,∗1,∗2 Isao Tanihata,∗1 Yuichi Sugahara,∗3 Hiroshi Toki,∗1,∗4 and Kohsuke Sumiyoshi∗1 ∗1 RI Beam Science Laboratory, RIKEN ∗2 Faculty of Studies on Contemporary Society, Aichi Shukutoku University ∗3 Genome Science Laboratory, RIKEN Tsukuba Life(More)
The molecule-like structure of C isotopes (A = 12, 14, 16) is investigated using a microscopic α+α+α+n+n+·· model. The valence neutrons are classified based on the molecular-orbit (MO) model, and both π-orbit and σ-orbit are introduced around three α-clusters. The combination of the valence neutrons in the πand the σ-orbit is promising to stabilize the(More)