Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
LaGoto, Yu*; Ito, Yuki*; Ide, Ikuo*; Ino, Takashi*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Okuizumi, Mao*; Kameda, Kento*; Kawamura, Shiori*; et al.
no journal, ,
no abstracts in English
Nakabe, Rintaro*; Endo, Shunsuke; Fujioka, Hiroyuki*; Ide, Ikuo*; Ino, Takashi*; Kawamura, Shiori*; Kitaguchi, Masaaki*; Kobayashi, Ryuju*; Oku, Takayuki; Okudaira, Takuya*; et al.
no journal, ,
no abstracts in English
He absorption cross sections for neutrons using the J-PARC pulsed neutron sourceShimizu, Haruki*; Mishima, Kenji*; Ino, Takashi*; Ichikawa, Go*; Tsuchikawa, Yusuke; Endo, Shunsuke
no journal, ,
no abstracts in English
Saito, Teruyuki; Matsuo, Masayuki*
no journal, ,
With the recent observations of binary neutron star mergers, there is a need for more accurate evaluation of nuclear data related to the r-process from the theoretical side. We have developed a new method to evaluate the neutron capture by RPA instead of the conventional potential model. Recently, calculations including pair correlation have become possible, and the theory can now be widely applied to the case where the (n,g) producing nuclei are even-even nuclei. We will report the results of our latest calculations of (n,g) cross sections.
Sekikawa, Takuya; Hwang, B.*; Ishizaka, Masato*; Matsuya, Yusuke*; Kawai, Hiroyuki*; Ono, Yoshiaki*; Sato, Tatsuhiko; Kai, Takeshi
no journal, ,
Deoxyribonucleic acid (DNA) carries the genetic information of living organisms through various combinations of guanine, cytosine, adenine, and thymine, and radiation biological effects are mainly caused by damage to this DNA. In this study, in order to theoretically investigate the transient molecular conformational changes until DNA damage is established, we used the first-principles calculation software OpenMX to perform calculations targeting DNA that produces 1
20 holes, where the holes are trapped in the guanine bases of the DNA when there are few holes and the DNA with many holes In the case of DNA, it was found that the main strand mainly contributes to the chemical reaction. The results of this study will contribute to the elucidation of the first-phase processes of radiation biological effects.
Yoshii, Kenji; Fukada, Yukimasa; Fukuda, Tatsuo; Tsuji, Takuya; Matsumura, Daiju; Yaita, Tsuyoshi; Ikeda, Naoshi*
no journal, ,
no abstracts in English
Nakajima, Kenji
no journal, ,
I will summarize the symposium "The Present and Future of Neutron Scattering in Magnetism: Three Years after the Restart of Research Reactor JRR-3" and will give the future prospects.
-electron magnets under extreme sample environmentKaneko, Koji
no journal, ,
no abstracts in English
Yabunaka, Shunsuke
no journal, ,
no abstracts in English
NiSe
, 5Tsuchida, Shun*; Hirose, Yusuke*; Sekikawa, Takuya; Ono, Yoshiaki*; Settai, Rikio*
no journal, ,
Exciton insulators have the property that the entire crystal becomes an insulator due to the collective behavior of electrons and holes bound together in the crystal, and are attracting attention as a novel physical property. In this study, we succeeded in growing an element-substituted sample (Ta1-xMx)NiSe (M=Ti, Zr, Hf) and found that the electrical resistivity of the high-temperature phase of the sample with a Ti content of 0.06 or more exhibits a metallic behavior. The electrical resistivity of the high-temperature phase behaves metallurgically for samples with a titanium (Ti) content of 0.06 or more. This is in contrast to the pressure effect, which changes from an insulator to a metallic phase discontinuously. Therefore, we also report the results of the electrical resistivity measurement under pressure of (Ta1-xTix)NiSe, in which the element substitution effect and the pressure effect exist simultaneously. The phase transition shown in this study is a new insight into the realization of excitonic insulators.
Haga, Yoshinori; Tokiwa, Yoshifumi; Sakai, Hironori; Yamamoto, Etsuji; Kambe, Shinsaku; Tokunaga, Yo; Muro, Yuji*
no journal, ,
no abstracts in English
Ikemoto, Megumi*; Somekawa, Jun*; Neki, Arata*; Konishi, Ren*; Nakashima, Ryota*; Okutsu, Kenichi*; Kino, Yasushi*; Yamashita, Takuma*; Okada, Shinji*; Sato, Motoyasu*; et al.
no journal, ,
We have been studying on muon beam quality improvement by moderating 
generated by an accelerator with a thin Si film, and then decelerating and focusing the beam in an electrostatic field. In this study, numerical simulation of an experiment in which of a few MeV is injected into a 0.5~mm thick Si plate and , which is decelerated to a few keV, is extracted electrostatically is performed using charged particle orbit software (SIMION). The flight time to the end of the transport tube and the transport efficiency change with a slight shift of the muon launch position, suggesting that the muon transport process is sensitive to the initial conditions.
Ge
Sakai, Hironori; Shin, S.*; Kambe, Shinsaku; Tokunaga, Yo; Harima, Hisatomo*; Park, T.*
no journal, ,
Al nuclear magnetic resonance (NMR) experiments were carried out on single crystals of CePtAlGe, which is of interest as a Kondo lattice system forming a triangular lattice. There are crystallographically distinct Al(1) and Al(2) sites with the same local symmetry in the crystal structure of the triclinic system. We determined the electric field gradient parameters from the angular dependence of the external magnetic field direction. We compared them with the results of electronic structure calculations to successfully identify the sites. On the day, magnetic interactions and magnetic fluctuations in this system will be discussed with the results of NMR relaxation rate measurements.
Zn
Kitazawa, Takafumi; Tokunaga, Yo; Haga, Yoshinori; Opletal, P.; Sakai, Hironori; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Kambe, Shinsaku
no journal, ,
no abstracts in English
Fujii, Daisuke; Iwanaka, Akihiro*; Suenaga, Daiki*; Kitazawa, Masakiyo*
no journal, ,
We discuss pure Yang-Mills theory with anisotropic boundary conditions on 
manifolds. The lattice QCD results show that anisotropy effects are suppressed until the spatial spread becomes significantly smaller near the critical temperature. We successfully reproduce the thermodynamics of lattice by extending the Polyakov loop model, which describes the usual finite temperature, on with parameters. Furthermore, by considering the physical background, we show that the competition between the two Polyakov loops introduced in the model and the existence of a new first-order phase transition are important.
Fujii, Daisuke; Suzuki, Kei; Nakayama, Katsumasa*
no journal, ,
Recently, new types of Casimir effects realized in condensed matter systems have been discovered. For example, the photonic Casimir effect in Weyl semimetals was found to exhibit remarkable behavior. This new type of Casimir effect may also be realized in dense quark matter. In this presentation, we discuss typical features of the Casimir effect in finite density QCD using the Nambu-Jona-Lasinio model. In particular, an remarkable behavior of the Casimir effect in the dual chiral density wave phase is revealed.
Fujii, Daisuke; Iwanaka, Akihiro*
no journal, ,
The gravitational form factors of hadrons are form factors that characterize the matrix elements of the energy-momentum tensor and contain information on the stress distribution inside hadrons. Recently, the gravitational form factors of nucleons have been experimentally extracted and the extremely anisotropic behavior of the nucleon interior has been revealed. In this presentation, we present a study of the gravitational form factors of vector mesons using the Sakai-Sugimoto model, which is one of the top-down approaches to holographic QCD. We show the relationship between the hadron stability condition imposed on the forward limit of the gravitational form factors and the glueball spectra.
Se following improved spectroscopy