Pairing symmetry of UPt probed by thermal transport tensors

Izawa, Koichi*; Machida, Yo*; Ito, Atsushi*; So, Yoshinao*; Ota, Katsuya*; Haga, Yoshinori; Yamamoto, Etsuji; Kimura, Noriaki*; Onuki, Yoshichika; Tsutsumi, Yasumasa*; et al.

Journal of the Physical Society of Japan, 83(6), p.061013_1 - 061013_8, 2014/06

https://doi.org/10.7566/JPSJ.83.061013

Twofold spontaneous symmetry breaking in the heavy-fermion superconductor UPt

Machida, Yo*; Ito, Atsushi*; So, Yoshinao*; Izawa, Koichi*; Haga, Yoshinori; Yamamoto, Etsuji; Kimura, Noriaki*; Onuki, Yoshichika; Tsutsumi, Yasumasa*; Machida, Kazushige*

Physical Review Letters, 108(15), p.157002_1 - 157002_5, 2012/04

https://doi.org/10.1103/PhysRevLett.108.157002

A New method for isotope ratio measurement of uranium in trace amount by thermal ionization mass spectrometry; The Continuous heating method

Suzuki, Daisuke; Kokubu, Yoko; Sakurai, Satoshi; Lee, C. G.; Magara, Masaaki; Iguchi, Kazunari*; Kimura, Takaumi

International Journal of Mass Spectrometry, 294(1), p.23 - 27, 2010/06

https://doi.org/10.1016/j.ijms.2010.04.007

A new method for isotope ratio measurement with thermal ionization mass spectrometry (TIMS), "continuous heating method", was developed in order to determine an accurate isotope ratio of uranium ranging from sub-picograms to several dozen picograms. In this method, signals were measured during evaporation of an entire sample; however, part of the higher detected signals was used for calculation of the isotope ratio. The continuous heating method can measure the ratios with high reproducibility regardless of the sample amount and the skill of operators because procedures of measurement and data calculation were standardized, enabling accurate correction of mass discrimination effect. When U/U ratios in isotopic reference materials measured by the continuous heating method were compared with those measured by the conventional method and the total evaporation method, there was no difference in the case of measurement of a larger amount of samples. However, the continuous heating method showed the most accurate result compared with those measured by the other methods for the measurement of the sample of sub-picograms.

Dissolution tests of spent fuel in the NUCEF cell including dissolver off-gas treatment

Mineo, Hideaki; Kihara, Takehiro; *; Kimura, Shigeru; *; ; Uchiyama, Gunzo; Hotoku, Shinobu; Watanabe, Makio; ; et al.

JAERI-Conf 99-004, p.498 - 507, 1999/03

https://jopss.jaea.go.jp/pdfdata/JAERI-Conf-99-004-Part1.pdf

no abstracts in English

Spent fuel test of an advanced PUREX process:PARC

Mineo, Hideaki; Uchiyama, Gunzo; Hotoku, Shinobu; Asakura, Toshihide; Kihara, Takehiro; *; ; Kimura, Shigeru; *; ; et al.

Proc. of Int. Conf. on Future Nuclear Systems (GLOBAL'99)(CD-ROM), 7 Pages, 1999/00

no abstracts in English

A Test line newly installed in NUCEF and research program on advanced reprocessing process by utilizing it

Asakura, Toshihide; Uchiyama, Gunzo; Kihara, Takehiro; Hotoku, Shinobu; *; ; *; ; ; Fujine, Sachio; et al.

Proc. of 5th Int. Nucl. Conf. on Recycling, Conditioning and Disposal (RECOD '98), 1, p.746 - 753, 1998/00

no abstracts in English

Depositional sequence of the Post-LGM incised-valley fill controlled by seismic crustal deformation and large-scale lahars; An Example of SKM core obtained from the Sukumo coastal lowland along the Nankai Trough, Japan

Nanayama, Futoshi*; Yamaguchi, Tatsuhiko*; Nakanishi, Toshimichi; Tsuji, Tomohiro*; Ikeda, Michiharu*; Kondo, Yasuo*; Miwa, Michiko*; Sugiyama, Shinji*; Kimura, Kazunari*

no journal, , 

The characteristics of the post-LGM incised valley fills and the depositional sequence were examined the SKM core collected in the Sukumo coastal lowland, where is expected to huge seismic subsidence due to the Nankai Trough great earthquakes. Our sedimentological, radiocarbon dating and paleoenvironmental results are as bellows. Sediments of the SKM core clearly show a succession influenced by post-glacial sea level change. The Matsuda River incised valley was formed in LGM and filled by fluvial sand and gravels in late Pleistocene. After the postglacial transgression, sea level reached -30 m (a.s.l.) at 9.8 ka and the incised valley changed to an estuary environment. The sea level continued to rise and it became an inner bay mud bottom environment, and reaching a maximum water depth was at 7.5 ka. The 7.3 ka Kikai caldera eruption in southern Kyushu caused heavy K-Ah ash fall in southwestern Shikoku, and then large-scale lahars frequently occurred immediately after the ash fall because of the vicinity of volcanic source. After ash fall, the K-Ah secondary sediments rapidly deposited on the inner bay environment and caused forced regression. After 7.0 ka, the growth of the delta became active ahead of the other regions, which may be due to the large K-Ah ash fall. At 5 ka, the sea level reached + 2.5 m (a.s.l.) estimated by the Sukumo midden and this altitude is recognized as the Holocene marine limit in this area. The information on relative sea level change during the past 10000 years has revealed that the Sukumo Bay area has not subsided due to seismic crustal deformation.