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Shibata, Motoki*; Nakanishi, Yohei*; Abe, Jun*; Arima, Hiroshi*; Iwase, Hiroki*; Shibayama, Mitsuhiro*; Motokawa, Ryuhei; Kumada, Takayuki; Takata, Shinichi; Yamamoto, Katsuhiro*; et al.
Polymer Journal, 55(11), p.1165 - 1170, 2023/11
Times Cited Count：1 Percentile：51.7(Polymer Science)Liu, H.*; Nakayama, Shinsuke; Lei, J.*; Ren, Z.*
Physical Review C, 108(1), p.014617_1 - 014617_8, 2023/07
In this paper, we study deuteron-induced inclusive breakup reaction and explore the 
and 
reactions for light and medium mass nuclei. Using the models of Ichimura, Austern, and Vincent and Glauber, we scrutinize the double differential cross-section of nonelastic breakup and compare the results for various reaction systems. Our findings indicate that the Glauber model, combined with a quantum 
-matrix, produces remarkable results in the deuteron-induced inclusive breakup reaction. While both models are proficient in predicting the outcomes of light and medium mass nuclei, the reaction showcases higher consistency than the reaction. Nevertheless, there are still significant discrepancies between experimental and theoretical cross-sections that require further investigation and analysis. This study opens up a new realm of possibilities for future research in the field.
Nakayama, Shinsuke; Iwamoto, Osamu; Watanabe, Yukinobu*
Physical Review C, 100(4), p.044603_1 - 044603_8, 2019/10
Times Cited Count：7 Percentile：59.68(Physics, Nuclear)The weakly-bound nature of the deuteron brings the complexity of deuteron-induced reactions compared to nucleon-induced ones, and is expected to affect various physical quantities observed in deuteron-induced reactions. Aiming to deep understanding and accurate prediction for the emission of light composite particle (LCP) in deuteron-induced reactions, we revise the computational system dedicated to deuteron-induced reactions, called DEURACS. The model by Iwamoto and Harada describing pre-equilibrium cluster emission which was successfully applied to LCP emission innucleon-induced reactions is integrated into the framework of DEURACS, in which the breakup processes of incident deuteron are explicitly taken into account. The phenomenological model by Kalbach is also adopted to estimate the contribution from the direct pickup process. Using the revised DEURACS, we analyze the 
, 
, and 
reactions in the target mass range 
. Regardless of the targets, the calculation results successfully reproduced the experimental data for each reaction, simultaneously. These results demonstrates that the LCP emission from the pre-equilibrium and compound nucleus processes in deuteron-induced reactions,which occupies a large part of the total LCP emission,can be described by the same theoretical models as used in nucleon-induced reactions when the breakup processes of incident deuteron are properly considered.
reactions on 
Be and 
CNakayama, Shinsuke; Kono, Hiroshi*; Watanabe, Yukinobu*; Iwamoto, Osamu; Ogata, Kazuyuki*
RCNP Annual Report 2016 (Internet), 2 Pages, 2017/05
We are conducting a theoretical research on deuteron-induced reaction together with Kyushu University and Research Center for Nuclear Physics (RCNP) of Osaka University. The research outcomes achieved in fiscal year 2016 are summarized as a part of the annual report of RCNP. In recent years, accelerator neutron sources using reactions on light nuclei (Li, Be, C, etc.) are proposed for applications in various fields. Engineering design of such facilities requires accurate prediction of reactions on light nuclei in a wide incident energy range. Therefore, we have developed a physics-based computational code system dedicated for deuteron-induced reactions, called DEURACS. In fiscal year 2016, we calculated double-differential neutron yields from deuteron bombardment on thick Be and C targets, and the calculation reproduced the experimental data quantitatively well in the incident energy range up to 50 MeV. From the results, it has been found that DEURACS can accurately predict reactions on light nuclei in a wide incident energy range. In addition, component-by-component analysis has revealed that the nonelastic breakup reactions make the most dominant contribution to neutron production.
Yoshida, Masaru; *; Asano, Masaharu; Suwa, Takeshi; Kubota, Hitoshi*; Katakai, Ryoichi*
J. Polym. Sci., Part A, 35, p.3075 - 3077, 1997/00
no abstracts in English
*; *; Koike, Tadao; Miyata, Teijiro
JAERI-Tech 96-056, 59 Pages, 1996/12
no abstracts in English
(C-Cl) transition; Takayanagi, Toshiyuki;
Journal of Chemical Physics, 103(4), p.1710 - 1713, 1995/07
Times Cited Count：12 Percentile：47.34(Chemistry, Physical)no abstracts in English
Takayanagi, Toshiyuki;
Bulletin of the Chemical Society of Japan, 68(8), p.2225 - 2232, 1995/00
Times Cited Count：21 Percentile：71.8(Chemistry, Multidisciplinary)no abstracts in English
Sato, K.*; *; Takayanagi, Toshiyuki; ;
Chemical Physics Letters, 245, p.432 - 436, 1995/00
Times Cited Count：2 Percentile：9.7(Chemistry, Physical)no abstracts in English
Hoken Butsuri, 22, p.189 - 207, 1987/00
no abstracts in English
;
Int.J.Appl.Radiat.Isot., 34(4), p.687 - 691, 1983/00
no abstracts in English
Tanifuji, Takaaki;
Journal of Nuclear Materials, 87(1), p.189 - 195, 1979/00
Times Cited Count：14no abstracts in English
; ; Iwamoto, K.
JAERI-M 5681, 15 Pages, 1974/04
no abstracts in English
Kumada, Takayuki; Noda, Yohei*; Ishikawa, Norito
no journal, ,
We compared dynamic nuclear polarization (DNP) behavior of electron-beam irradiated and TEMPO-doped samples. Both of the growth and decay rates of the nuclear polarization of the irradiated samples linearly increased with the irradiation dose, whereas those of the doped sample were quadratically proportional to the TEMPO concentration. This result suggests that the irradiated samples are polarized due to pair of free radicals produced in a spur, whereas the doped sample is polarized by unspecified TEMPO radical pairs accidentally located nearby. We suggest that higher polarization is expected by optimizing irradiation temperature, on which the radical-radical distance in the pair depends.
