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Yoshida, Kazuki; Taniguchi, Yasutaka*; Chiba, Yohei*; Kimura, Masaaki*; En'yo, Yoshiko*; Ogata, Kazuyuki*
no journal, ,
In this presentation I will discuss the investigation on 
cluster states through knockout reaction cross section analyses, 
Ne and 
Ti in particular. The cluster states of these nuclei are described by the Antisymmetrized Molecular Dynamics (AMD), and the Distorted Wave Impulse Approximation (DWIA) is adopted as a reaction theory. Within the framework of these structure and reaction theories, the theoretical knockout reaction cross section is calculated and the comparison between existing data is discussed.
Shizuma, Toshiyuki; Omer, M.; Hajima, Ryoichi; Koizumi, Mitsuo; Utsuno, Yutaka
no journal, ,
no abstracts in English
Kaneko, Koji
no journal, ,
no abstracts in English
PtIn
Kambe, Shinsaku; Tokunaga, Yo; Sakai, Hironori; Hattori, Taisuke; Higa, Nonoka; Kratoch
lov
, M.*; Uhlirova, K.*; Custers, J.*
no journal, ,
no abstracts in English
Kambe, Shinsaku
no journal, ,
no abstracts in English
Nagai, Yuki; Okumura, Masahiko; Tanaka, Akinori*
no journal, ,
no abstracts in English
Konishi, Suzuka*; Minagawa, Hideaki*; Majima, Takuya*; Imai, Makoto*; Saito, Manabu*; Hirade, Tetsuya; Tsuchida, Hidetsugu*
no journal, ,
To clarify the damage behavior under ion irradiation in quartz glass, Age-Momentum Correlation measurement that is a coincidence measurement of positron annihilation lifetime and annihilation gamma ray Doppler broadening was performed under 2 MeV proton irradiation. From the change in momentum distribution of electrons involved in positron annihilation in voids of the quartz glass, flux dependence of damage behavior could be detected.
Kai, Takeshi; Ishida, Akira*; Oshima, Nagayasu*
no journal, ,
When a positron was injected into the condensed phase, positronium (Ps) which constructs of an electron and a positron was generated. Although we expect that Bose-Einstein condensation (BEC) using the densely positroniums creates newly physics such as gravity accurate measurement of antimatter and annihilation gamma-rays laser, the BEC have never been achieved. The aims of this study are that fundamental explication of Ps generation as well as elucidation of experimental condition for Ps-BEC achievement from the positrons deceleration simulation in the condensed phase. For the aims, we applied a dynamic Monte Carlo code of the electrons to deceleration simulation of positrons bunch. We present current states of development of the high dense positrons transport simulation in the condensed phase.
Kai, Takeshi
no journal, ,
Although many theoretical experimental studies for water radiolysis and its chemical reaction have been performed, the consistency between the physical process and the chemical process has not been maintained. From the current states, we have performed the theoretical studies connected with the physical and the chemical processes. As the results, radiolytic dynamics simulation, which can maintain the consistency, have being developed from the consideration with polarization effects of condensed phase. Thus we proposed a symposium connected with physical and chemical processes, and it was adopted by Japan Physical Society. We show overview of this symposium, and report the forefront of study for the water radiolysis, and the importance of the study connected with physical and chemical processes.
Kaneko, Koji; Frontzek, M. D.*; Matsuda, Masaaki*; Oishi, Kazuki*; Nakao, Akiko*; Munakata, Koji*; Ohara, Takashi; Kakihana, Masashi*; Haga, Yoshinori; Hedo, Masato*; et al.
no journal, ,
no abstracts in English
Muramatsu, Haruka*; Yuasa, Naoki*; Hayashi, Tasuku*; Konno, Ryohei*; Yamaguchi, Atsushi*; Mitsuda, Kazuhisa*; Yamasaki, Noriko*; Kikunaga, Hidetoshi*; Nakamura, Keisuke; Takimoto, Misaki; et al.
no journal, ,
no abstracts in English
Harada, Masahide; Makimura, Shunsuke*; Kawamura, Naritoshi*; Shimomura, Koichiro*
no journal, ,
In MLF at J-PARC, 3GeV and 1MW proton beam induces a carbon target and mercury target to provide muon beam to muon instruments and neutron beam to neutron instruments, respectively. The facility, called the first target station, "TS1", starts to operate from 2008 and operates with 500kW stably as of December 2018. As one of future plans, a plan of the second target station, "TS2", is progressing. As a main plan, TS2 has a tungsten rotating target to provide both neutron and muon, and higher neutron brightness are expected by adopting higher density of proton beam, closer moderators to the target, flatter moderator and so on. The rotating target cooled by helium gas is also expected to increase neutron and muon intensities with a coexistence of them. At present status, optimization studies of TS2 are progressing, the results preliminary indicate that the neutron brightness and the muon intensity are increased 10 and 20 times higher than that of TS1, respectively.
Harada, Hiroyuki
no journal, ,
Recently, humankind had big discovery about neutron star, which is great big nuclear in the space. They are discovery of neutron star with twice mass of solar in 2010 and observation of gravity wave when two neutron start incorporate in 2017. Experimental researches of the neutron star by using accelerated ion beams become heated in the world. The J-PARC facility consists of 400 MeV linac, 3 GeV rapid cycling synchrotron (RCS) and 50 GeV main ring synchrotron. These accelerators provide MW class high intensity proton beams to the targets, and secondary beams after hitting the proton to the targets are used in many experiments and researches. We simulated the heavy ion beam in our J-PARC accelerators and propose the accelerator scheme of the beam in J-PARC and the intensity will reach to the world record. I will report the current status of proton beam and introduce the accelerator plan for high intensity heavy ion beam in J-PARC.
Fukaya, Yuki; Feng, B.*; Fukutani, Katsuyuki; Matsuda, Iwao*
no journal, ,
no abstracts in English
electrons system URu
Si under high fieldsSakai, Hironori; Higa, Nonoka; Hattori, Taisuke; Tokunaga, Yo; Haga, Yoshinori; Kambe, Shinsaku; Goto, Takayuki*; Hirata, Michihiro*; Awaji, Satoshi*; Sasaki, Takahiko*
no journal, ,
We have performed 
Si nuclear magnetic resonance (NMR) experiments using single crystal of strongly correlated 
electrons system URuSi under high external field of about 24 T. The temperature dependence of NMR shift in the paramagnetic state varies with external fields. The temperature and field dependences of NMR shifts resembles those of magnetic susceptibility.
Koura, Hiroyuki
no journal, ,
no abstracts in English
Higa, Nonoka; Tokunaga, Yo; Hattori, Taisuke; Sakai, Hironori; Kambe, Shinsaku
no journal, ,
no abstracts in English
Yoshida, Junya; Ekawa, Hiroyuki; Hayakawa, Shuhei; Kasagi, Ayumi*; Nishimura, Shin*; Nyaw, A. N. L.*; Yoshimoto, Masahiro*; Nakazawa, Kazuma*
no journal, ,
J-PARC E07, an experiment with emulsion technique, is carrying out to detect 10 times higher statistics of double hypernuclei compared to the past experiments. This experiment aims to obtain quantitative data on baryon-baryon interaction, such as 
- and 
-nucleon interaction, by the mass measurement of various double hypernuclei. We completed beam exposure and photographic processing of the all emulsion modules as scheduled in 2018. In this presentation, the current status of the experiment, progress of analysis, the detection efficiency, and the schedule are introduced. As of Jan. 2019, we have scanned about 53% of 1300 emulsion sheets at least once. We have detected 22 candidate events of double hypernuclei.
Fe
O
Imai, Masaki; Chudo, Hiroyuki; Maekawa, Sadamichi; Saito, Eiji
no journal, ,
no abstracts in English
Yamada, Ippei; Ogiwara, Norio*; Hikichi, Yusuke*; Kamiya, Junichiro; Kinsho, Michikazu
no journal, ,
no abstracts in English