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Sugimoto, Takeru*; Nasu, Hirokazu*; Arakawa, Ichiro*; Yamakawa, Koichiro
Journal of Chemical Physics, 150(18), p.184302_1 - 184302_5, 2019/05
We measured infrared absorption spectra of crystalline II of methane and succeeded in detecting a prominent Q(2) peak by rapid cooling after annealing as well as previously reported rovibrational and librational-vibrational peaks. The integral intensities of the R(0), R(1), and Q(2) peaks were found to show biexponential dependence on time. This clearly demonstrates the interconversion among the three nuclear-spin isomers occupying low-lying rotational levels.
Omichi, Masaaki*; Takano, Katsuyoshi*; Sato, Takahiro; Kamiya, Tomihiro; Ishii, Yasuyuki; Okubo, Takeru; Koka, Masashi; Kada, Wataru; Sugimoto, Masaki; Nishikawa, Hiroyuki*; et al.
Journal of Nanoscience and Nanotechnology, 12, p.7401 - 7404, 2012/09
Times Cited Count:2 Percentile:11.6(Chemistry, Multidisciplinary)Takano, Katsuyoshi*; Asano, Atsushi*; Maeyoshi, Yuta*; Marui, Hiromi*; Omichi, Masaaki*; Saeki, Akinori*; Seki, Shu*; Sato, Takahiro; Ishii, Yasuyuki; Kamiya, Tomihiro; et al.
Journal of Photopolymer Science and Technology, 25(1), p.43 - 46, 2012/07
Times Cited Count:2 Percentile:6.61(Polymer Science)Takano, Katsuyoshi*; Sugimoto, Masaki; Asano, Atsushi*; Maeyoshi, Yuta*; Marui, Hiromi*; Omichi, Masaaki*; Saeki, Akinori*; Seki, Shu*; Sato, Takahiro; Ishii, Yasuyuki; et al.
Transactions of the Materials Research Society of Japan, 37(2), p.237 - 240, 2012/06
Maeyoshi, Yuta*; Takano, Katsuyoshi*; Asano, Atsushi*; Marui, Hiromi*; Omichi, Masaaki*; Sato, Takahiro; Kamiya, Tomihiro; Ishii, Yasuyuki; Okubo, Takeru; Koka, Masashi; et al.
Japanese Journal of Applied Physics, 51(4R), p.045201_1 - 045201_4, 2012/04
Times Cited Count:1 Percentile:4.44(Physics, Applied)Takano, Katsuyoshi*; Sato, Takahiro; Kamiya, Tomihiro; Ishii, Yasuyuki; Okubo, Takeru; Koka, Masashi; Kada, Wataru; Sugimoto, Masaki; Seki, Shuhei*; Nishikawa, Hiroyuki*
JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 162, 2012/01
Takano, Katsuyoshi; Sato, Takahiro; Ishii, Yasuyuki; Koka, Masashi; Kamiya, Tomihiro; Okubo, Takeru; Sugimoto, Masaki; Nishikawa, Hiroyuki*; Seki, Shu*
Transactions of the Materials Research Society of Japan, 36(3), p.305 - 308, 2011/09
Kamiya, Tomihiro; Takano, Katsuyoshi; Ishii, Yasuyuki; Sato, Takahiro; Oikawa, Masakazu*; Okubo, Takeru; Haga, Junji*; Nishikawa, Hiroyuki*; Furuta, Yusuke*; Uchiya, Naoyuki*; et al.
Nuclear Instruments and Methods in Physics Research B, 267(12-13), p.2317 - 2320, 2009/06
Times Cited Count:7 Percentile:47.19(Instruments & Instrumentation)Takano, Katsuyoshi; Sato, Takahiro; Ishii, Yasuyuki; Kamiya, Tomihiro; Okubo, Takeru; Sugimoto, Masaki
no journal, ,
Three dimensional micromachining with proton beam writing has been developed at Japan Atomic Energy Agency (JAEA) Takasaki. For SU-8 negative-type photoresist films which is one of the candidate for the target, the proton microbeam writing with the incidence energy 3 MeV was performed to change the fluency from 0.03 to 0.27 C/mm. The use of the proton microbeam writing that the fluency is adjusted to 0.07C/mm enables to fabricate the range of 550 550 m by the resolution of 1 m vertically against the incidence direction.
Takano, Katsuyoshi; Sato, Takahiro; Ishii, Yasuyuki; Kamiya, Tomihiro; Okubo, Takeru; Sugimoto, Masaki; Nishikawa, Hiroyuki*; Seki, Shu*
no journal, ,
In TIARA facility of Japan Atomic Energy Agency (JAEA) Takasaki, microscopic bridge structures on silicon wafer substrate were produced with the proton beam writing, utilising a difference of projected range for SU-8 photoresist films between the incidence energy of 1 MeV and 3 MeV. The beam length of the brige structure was 50 m, and the distance between the beam and the substrate was 30 m.
Aburadani, Atsushi; Takeda, Nobukazu; Kakudate, Satoshi; Kubo, Tomomi*; Sugimoto, Takeru*; Nakahira, Masataka*; Tesini, A.*
no journal, ,
no abstracts in English
Takano, Katsuyoshi*; Seki, Shuhei*; Sato, Takahiro; Ishii, Yasuyuki; Okubo, Takeru; Koka, Masashi; Kada, Wataru; Kamiya, Tomihiro; Sugimoto, Masaki; Nishikawa, Hiroyuki*
no journal, ,
no abstracts in English
Miura, Kenta*; Umenyi, A. V.*; Hanaizumi, Osamu*; Sato, Takahiro; Ishii, Yasuyuki; Okubo, Takeru; Yamazaki, Akiyoshi; Koka, Masashi; Yokoyama, Akihito; Kada, Wataru; et al.
no journal, ,
no abstracts in English
Takano, Katsuyoshi*; Asano, Atsushi*; Maeyoshi, Yuta*; Marui, Hiromi*; Omichi, Masaaki*; Saeki, Akinori*; Seki, Shu*; Sato, Takahiro; Kamiya, Tomihiro; Ishii, Yasuyuki; et al.
no journal, ,
Takano, Katsuyoshi*; Asano, Atsushi*; Maeyoshi, Yuta*; Marui, Hiromi*; Omichi, Masaaki*; Saeki, Akinori*; Seki, Shuhei*; Sato, Takahiro; Ishii, Yasuyuki; Kamiya, Tomihiro; et al.
no journal, ,
Miura, Kenta*; Kikuchi, Shusuke*; Kiryu, Hiromu*; Inada, Kazuki*; Ozawa, Yusuke*; Hanaizumi, Osamu*; Yamamoto, Shunya; Sugimoto, Masaki; Yoshikawa, Masahito; Kawaguchi, Kazuhiro; et al.
no journal, ,
no abstracts in English
Miura, Kenta*; Hanaizumi, Osamu*; Kada, Wataru*; Ozawa, Yusuke*; Inada, Kazuki*; Kubota, Atsushi*; Kawashima, Akihiro*; Sato, Takahiro; Ishii, Yasuyuki; Koka, Masashi; et al.
no journal, ,
no abstracts in English
Yamakawa, Koichiro; Sugimoto, Takeru*
no journal, ,
Methane has three kinds of nuclear spin isomers: ortho (I = 1), meta (I = 2), and para (I = 0). Methane is a spherical top molecule, and its rotational energy is dependent on the rotational quantum number J. The J = 0 (J = 1) level is occupied only by the meta (ortho) isomer while the ortho and para states are degenerate at the J = 2 level. Because of this degeneracy, the conversion between ortho and para proceeds considerably fast, with the result that only the ortho-meta conversion has been observed in matrices of rare gases and para hydrogen. On the other hand, the nuclear spin conversion between three kinds of the isomers has recently been observed in the lower-temperature phase of crystalline methane. In this presentation, the infrared spectroscopic study on the ortho-meta-para conversion in crystalline methane is demonstrated, comparing with previous matrix-isolation studies.