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Ichige, Hisashi; Honda, Masao; Sasaki, Shunichi; Takenaga, Hidenobu; Matsuzawa, Yukihiro; Haga, Saburo; Ishige, Yoichi
JAEA-Technology 2007-037, 16 Pages, 2007/07
JAEA-Technology-2007-037.pdf:2.91MB
In JT-60U, pellet injector has been developed for improvement of density controllability and long operation duration consistent with a long pulse discharge (
65 s) started from FY2003. The injection frequency and operation duration were limited by extrusion speed and volume of the piston type pellet extruder, respectively, in the previous system. The screw type pellet extruder made in Russian company was newly installed in the system, which can continuously extrude the pellet at high speed and has been used in other fusion devices. After parts of the pellet injector system moved from JT-60 torus hall for efficient work, the previous piston type pellet extruder was changed to the new screw type pellet extruder and the tests for continuous pellet extrusion were performed. In the extrusion test using deuterium gas as a working gas, continuous pellet extrusion up to 330s was achieved, which is sufficient performance for applying it to JT-60U experiments.
Fe M
ssbauer spectroscopy of NpFeGa
in magnetic fieldHomma, Yoshiya*; Nasu, Saburo; Nakamura, Akio; Aoki, Dai*; Haga, Yoshinori; Metoki, Naoto; Sakai, Hironori; Ikeda, Shugo; Shiokawa, Yoshinobu*; Onuki, Yoshichika
Journal of Magnetism and Magnetic Materials, 310(2, Part1), p.440 - 442, 2007/03
Times Cited Count：0 Percentile：0(Materials Science, Multidisciplinary)Fe Mssbauer measurements of NpFeGa has been carried out in external field at 10 kOe. The negative quadrupole splitting QS was enhanced between 70 and 110 K. Negligibly small QS in the paramagnetic state was verified by a measurement of the spectrum in the applied field of 10 kOe. A correlation between the magnetic state and the electric field gradient implies that the origin of hyperfine magnetic field is not only due to the dipole field from magnetic Np atoms, but also from magnetic Fe atoms.
observed by 
Np and Fe Mssbauer spectroscopyHomma, Yoshiya*; Nasu, Saburo; Nakamura, Akio; Nakada, Masami; Aoki, Dai*; Metoki, Naoto; Yamamoto, Etsuji; Sakai, Hironori; Ikeda, Shugo; Haga, Yoshinori; et al.
Journal of the Physical Society of Japan, 75(Suppl.), p.44 - 46, 2006/08
no abstracts in English
Ichige, Hisashi; Hiratsuka, Hajime; Takenaga, Hidenobu; Matsuzawa, Yukihiro; Haga, Saburo; Miya, Naoyuki
Dai-17-Kai Bunshi Kagaku Kenkyusho Gijutsu Kenkyukai Hokokushu (CD-ROM), 4 Pages, 2006/03
no abstracts in English
U Mssbauer study on the 5f-quadrupoles in uranium-based intermetallicsTsutsui, Satoshi*; Nakada, Masami; Nasu, Saburo*; Homma, Tetsuo*; Tokiwa, Yoshifumi; Aoki, Dai*; Wisniewski, P.*; Haga, Yoshinori; Onuki, Yoshichika
Hyperfine Interactions, 141/142(1-4), p.237 - 242, 2002/06
Times Cited Count：1 Percentile：8.14(Physics, Atomic, Molecular & Chemical)We have determined the distribution of the 5f-quadrupoles and detected the 5f-quadrupole order in the uranium intermetallics, uranium dipnictides and UPd
, with Mo"ssbauer spectroscopy. We have declared that the distribution of the 5f-quadrupoles depends on the magnetic sequence in uranium dipnictides. The distribution of the 5f-quadrupole is spherical in UBi
, while those are oblate within c-plane in UP, UAs and USb. We have observed the sudden drop of the recoil-free fraction above the transition temperature of the quadrupole order in UPd. The present result suggests the change of the phonon states due to the quadrupole order in this compound.
U and Fe Mssbauer spectroscopic study of UFe
Tsutsui, Satoshi; Nakada, Masami; Kobayashi, Yasuhiro*; Nasu, Saburo*; Haga, Yoshinori; Onuki, Yoshichika
Hyperfine Interactions, 133(1-4), p.17 - 21, 2001/11
no abstracts in English
U Mssbauer study of UPt
Tsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Yamamoto, Etsuji; Kimura, Noriaki*; Onuki, Yoshichika
Journal of Magnetism and Magnetic Materials, 226-230(Part.1), p.87 - 88, 2001/05
no abstracts in English
U Mssbauer spectroscopic study of UX(X=Ga, P, As, Sb)Tsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Homma, Tetsuo; Yamamoto, Etsuji; Tokiwa, Yoshifumi; Aoki, Dai*; Wi
niewski, P.*; Onuki, Yoshichika
Journal of the Physical Society of Japan, Vol.70, Supplement A, p.34 - 36, 2001/05
no abstracts in English
; 
U and 
O NMR studyIkushima, Kenji; Tsutsui, Satoshi; Haga, Yoshinori; Yasuoka, Hiroshi; Walstedt, R. E.; Masaki, Nobuyuki; Nakamura, Akio; Nasu, Saburo*; Onuki, Yoshichika
Physical Review B, 63(10), p.104404_1 - 104404_11, 2001/03
Times Cited Count：85 Percentile：94.08(Materials Science, Multidisciplinary)no abstracts in English
U Mssbauer study on the magnetic properties of uranium-based heavy fermion superconductorsTsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Homma, Tetsuo; Yamamoto, Etsuji; Okuni, Hitoshi*; Onuki, Yoshichika
Hyperfine Interactions, 126(1-4), p.335 - 340, 2000/07
Times Cited Count：6 Percentile：38.01(Physics, Atomic, Molecular & Chemical)no abstracts in English
Fe Mssbauer spectroscopic study of U
FeTsutsui, Satoshi; Kobayashi, Yasuhiro*; Nakada, Masami; Nasu, Saburo*; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika
Journal of the Physical Society of Japan, 69(6), p.1764 - 1768, 2000/06
Times Cited Count：2 Percentile：25.4(Physics, Multidisciplinary)no abstracts in English
U Mssbauer spectrosopic study of UPdAl and URuSiTsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Homma, Tetsuo; Yamamoto, Etsuji; Okuni, Hitoshi*; Onuki, Yoshichika
Physica B; Condensed Matter, 281-282, p.242 - 243, 2000/06
Times Cited Count：3 Percentile：22.15(Physics, Condensed Matter)no abstracts in English
U Moessbauer spectroscopy of UGeTsutsui, Satoshi*; Nakada, Masami; Saeki, Masakatsu; Nasu, Saburo*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika*
Physical Review B, 60(1), p.37 - 39, 1999/07
Times Cited Count：11 Percentile：54.6(Materials Science, Multidisciplinary)no abstracts in English
Tsutsui, Satoshi*; Nakada, Masami; Kobayashi, Yasuhiro*; ; Saeki, Masakatsu; Nasu, Saburo*; Nakamura, Akio; Haga, Yoshinori; Homma, Tetsuo*; Yamamoto, Etsuji; et al.
Physics of Strongly Correlated Electron Systems (JJAP Series 11), p.266 - 268, 1998/00
no abstracts in English
Hino, Ryutaro; Suzuki, Kunihiro; Haga, Katsuhiro; Nekoya, Shinichi; Fukaya, Kiyoshi; Shimizu, Saburo; Onuki, Kaoru; Takada, Shoji; Mogi, Haruyoshi; Sudo, Yukio
JAERI-Review 95-016, 115 Pages, 1995/10
no abstracts in English
Homma, Yoshiya*; Nasu, Saburo; Nakamura, Akio; Nakada, Masami; Metoki, Naoto; Aoki, Dai*; Sakai, Hironori; Ikeda, Shugo; Shiokawa, Yoshinobu*; Haga, Yoshinori; et al.
no journal, ,
no abstracts in English
