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ladderUeda, Hiroshi*; Onoda, Shigeki*; Yamaguchi, Yasuhiro*; Kimura, Tsuyoshi*; Yoshizawa, Daichi*; Morioka, Toshiaki*; Hagiwara, Masayuki*; Hagihara, Masato*; Soda, Minoru*; Masuda, Takatsugu*; et al.
Physical Review B, 101(14), p.140408_1 - 140408_6, 2020/04
Times Cited Count：4 Percentile：25.92(Materials Science, Multidisciplinary)
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Sasaki, Tomoyuki*; Yokoo, Tetsuya*; Katano, Susumu; Akimitsu, Jun*
Journal of the Physical Society of Japan, 74(1), p.267 - 270, 2005/01
Times Cited Count：2 Percentile：19.73(Physics, Multidisciplinary)no abstracts in English
Satake, Shinichi*; Kunugi, Tomoaki*; Naito, Norihito*; Takase, Kazuyuki; Ose, Yasuo*
Dai-18-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Yoshishu (CD-ROM), 4 Pages, 2004/12
no abstracts in English
-orbital degeneracyOnishi, Hiroaki; Hotta, Takashi
Physical Review B, 70(10), p.100402_1 - 100402_4, 2004/09
Times Cited Count：3 Percentile：19.9(Materials Science, Multidisciplinary)In order to clarify a key role of orbital degeneracy in the spin 
=1 Haldane system, we investigate ground-state properties of the -orbital degenerate Hubbard model on the linear chain by numerical techniques such as DMRG. When the Hund's rule coupling is small, an antiferromagnetic phase with ferro-orbital ordering occurs, which corresponds to the gapped Haldane phase. On the other hand, increasing the Hund's rule coupling, a ferromagnetic phase with antiferro-orbital correlation appears. This phase is described by the pseudo-spin 
=1/2 antiferro-orbital Heisenberg model, i.e., there exists gapless excitation with respect to orbital degree of freedom.
Committee of the Halden Joint Research Programme
JAERI-Tech 2004-023, 38 Pages, 2004/03
JAERI-Tech-2004-023.pdf:1.85MB
JAERI has performed cooperative researches with several Japanese organizations utilizing the Halden Boiling Heavy Water Reactor(HBWR) which is located at Halden in Norway. These researches are carried out based on the contracts of the cooperative researches, which are revised every three years, in accordance with the renewal of the participation of JAERI to the OECD Halden Reactor Project. This report summarizes the objectives, contents and the outlines of the achievements of the cooperative researches during the three years from 2000 January to 2002 December. During the period, seven cooperative researches had been carried out. Two of them had been completed and other five researches have been continued to the next three years period. Most of them are irradiation test researches of advanced fuel and cladding in order to prepare the higher burnup utilization and introduction of LWR fuel and MOX fuel in LWRs of Japan.
Kogawa, Hiroyuki; Ishikura, Shuichi*; Haga, Katsuhiro; Kinoshita, Hidetaka; Kaminaga, Masanori; Hino, Ryutaro
Proceedings of ICANS-XVI, Volume 3, p.1295 - 1304, 2003/07
no abstracts in English
Kobayashi, Kaoru*; Kaminaga, Masanori; Haga, Katsuhiro; Kinoshita, Hidetaka; Aso, Tomokazu; Teshigawara, Makoto; Hino, Ryutaro
JAERI-Tech 2002-005, 118 Pages, 2002/02
JAERI-Tech-2002-005.pdf:9.71MB
In order to examine the radiation safety of a spallation mercury target system, it is necessary to clarify the chemical forms of spallation products generated by spallation reaction with proton beam. As for the chemical forms of spallation products in mercury that involves large amounts of spallation products, these forms were estimated by using the binary phase diagrams and the thermochemical equilibrium calculation based on the amounts of spallation product. Calculation results showed that the mercury would dissolve Al, As, B, Be, Bi, C, Co, Cr, Fe, Ga, Ge, Ir, Mo, Nb, Os, Re, Ru, Sb, Si, Ta, Tc, V and W in the element state, and Ag, Au, Ba, Br, Ca, Cd, Ce, Cl, Cs, Cu, Dy, Er, Eu, F, Gd, Hf, Ho, I, In, K, La, Li, Lu, Mg, Mn, Na, Nd, Ni, O, Pb, Pd, Pr, Pt, Rb, Rh, S, Sc, Se, Sm, Sn, Sr, Tb, Te, Ti, Tl, Tm, Y, Yb, Zn and Zr in the form of inorganic mercury compounds.
Kinoshita, Hidetaka; Terada, Atsuhiko*; Kaminaga, Masanori; Hino, Ryutaro
JAERI-Tech 2001-061, 43 Pages, 2001/10
JAERI-Tech-2001-061.pdf:5.21MB
no abstracts in English
Metoki, Naoto; Koike, Yoshihiro; Matsuoka, Yuki; Kobayashi, Tatsuo*; Yamashita, Masahiro*
Journal of Magnetism and Magnetic Materials, 226-230(Part.1), p.414 - 416, 2001/05
no abstracts in English
Koike, Yoshihiro; Metoki, Naoto; Morii, Yukio; Kobayashi, Tatsuo*; Ishii, Tomohiko*; Yamashita, Masahiro*
Journal of the Physical Society of Japan, 69(12), p.4034 - 4042, 2000/12
Times Cited Count：6 Percentile：46.5(Physics, Multidisciplinary)no abstracts in English
*; Fujiwara, Masayuki*
JNC TJ8430 2000-001, 55 Pages, 2000/03
JNC-TJ8430-2000-001.pdf:4.82MB
no abstracts in English
*; *; *
JNC TJ8420 2000-003, 99 Pages, 2000/03
JNC-TJ8420-2000-003.pdf:5.47MB
no abstracts in English
Nakamura, Jinichi
Kaku Nenryo, (31), p.31_21 - 31_22, 1999/06
no abstracts in English
Saito, Hioraki*; Iriya, Yoshikazu*
JNC TJ8440 99-003, 156 Pages, 1999/03
no abstracts in English
Kosaka, Atsuo; Suzudo, Tomoaki
JAERI-Review 99-012, 22 Pages, 1999/03
no abstracts in English
Hazama, Taira
PNC TN9410 98-073, 48 Pages, 1998/08
The theoretical formula for the statistical error estimation in Mihalczo method was derived, and the dependence of the error were investigated on the facility to be measured and on the parameter in the data analysis. The formula was derived based on the reactor noise theory and the error theory for the frequency analysis, and found that the error depends on such parameters as the prompt neutron decay constant, detector efficiencies, and the frequency bandwidth. Statistical errors estimated with the formula was compared with experimental values and verified to be reasonable. Through parameter surveys, it is found that there is a setting in the data analysis to optimize the magnitude and reliability of the errors. In the experiment performed in DCA subcriticality measurement facility, it is estimated experimentally that the measurement requires 20 minutes to obtain the statistic error of 1% for the keff 0.9. According to the error theory, this should be reduced to 3sec in the aqueous fuel system typical in fuel reprocessing plant.
; ; ; Kato, Masato; ; ;
PNC TN8410 97-038, 447 Pages, 1997/03
PNC-TN8410-97-038.pdf:195.11MB
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