Author: "Watanabe, Y.X." / Topic: nuclear physics - Searchworks@Jio Institute Digital Library Search Results

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Start Over Author "Watanabe, Y.X." Topic nuclear physics

Author: Teranishi, T., Kubono, S., He, J.J., Notani, M., Fukuchi, T., Michimasa, S., Shimoura, S., Nishimura, S., Nishimura, M., Yanagisawa, Y., Kurokawa, M., Wakabayashi, Y., Hokoiwa, N., Gono, Y., Morikawa, T., Odahara, A., Ishiyama, H., Watanabe, Y.X., Hashimoto, T., and Ishikawa, T.
Subjects: ION bombardment, SCATTERING (Physics), RESONANCE, CHEMICAL kinetics, NUCLEAR reactions, NUCLEAR physics
Abstract: A low-energy radioactive-ion beam separator based on an in-flight technique was developed at CNS, University of Tokyo and was installed at RIKEN. Using the separator, experiments of the elastic resonance scattering of 11C+p, 12N+p, and 23Mg+p were performed to study resonance levels in 12N, 13O, and 24Al, respectively. New information on spin-parities and widths for these levels may help understand stellar (p,γ) reaction rates. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]
Published: 2004
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Author: Das, S.K., Mizoi, Y., Fukuda, T., Yamaguchi, K., Ishiyama, H., Tanaka, M.H., Watanabe, Y.X., and Miyatake, H.
Subjects: *NUCLEAR counters, *LOW pressure (Science), *CARBON dioxide, *HELIUM, *PERFORMANCE evaluation, *NUCLEAR physics
Abstract: Abstract: We have evaluated and compared the performances of a CERN GEM and a Thick GEM in low-pressure He/CO2 (90%/10%) mixed gas. In particular, the empirical gas gains of the standard CERN GEM and the Thick GEM have been measured and investigated. [ABSTRACT FROM AUTHOR]
Published: 2011
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Author: Ishiyama, H., Hashimoto, T., Ishikawa, T., Watanabe, Y.X., Das, S.K., Miyatake, H., Mizoi, Y., Fukuda, T., Tanaka, M.-H., Fuchi, Y., Yoshikawa, N., Hirayama, Y., Jeong, S.C., Nomura, T., Katayama, I., Mitsuoka, S., Nishio, K., Matsuda, M., Saha, P.K., and Ichikawa, S.
Subjects: *ASTROPHYSICS, *NUCLEAR physics, *COLLISIONS (Nuclear physics), *RESONANCE
Abstract: Abstract: The excitation function of the 8Li()11B reaction was measured while identifying the final state event by event in the region of using a highly efficient detector system and a low-energy 8Li beam. The results are much improved both in statistics and precisions, and show smaller cross sections than those of previous measurements. A resonance-like structure is found at around . [Copyright &y& Elsevier]
Published: 2006
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Author: Yamaguchi, K., Ishiyama, H., Tanaka, M.H., Watanabe, Y.X., Miyatake, H., Hirayama, Y., Imai, N., Makii, H., Fuchi, Y., Jeong, S.C., Nomura, T., Mizoi, Y., Das, S.K., Fukuda, T., Hashimoto, T., and Arai, I.
Subjects: *PHOTOMULTIPLIERS, *ION bombardment, *NUCLEAR reactions, *NUCLEAR energy, *NUCLEAR physics
Abstract: Abstract: We have developed an active target type gas detector, multi-sampling tracking proportional chamber (MSTPC) for studies of low-energy nuclear reactions such as (α,n) and (α,p). For higher rate capability, a gas electron multiplier (GEM) foil was adopted, instead of a multi-wire proportional counter, as a component of the MSTPC. We studied the basic properties of gas gain in a 400μm thick GEM (THGEM), which was compared to those of standard CERN GEMs. The THGEM was examined for gain instability and positive-ion feedback, especially with low-pressure He-base mixed gas. The THGEM was found to be applicable as a proportional counter using our gas target and He as the operating gas. [ABSTRACT FROM AUTHOR]
Published: 2010
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