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Journal Articles

Identified charged hadron production in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06

 Times Cited Count:162 Percentile:99.44(Physics, Nuclear)

Transverse momentum distributions and yields for $$pi^{pm}, K^{pm}, p$$, and $$bar{p}$$ in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the RHIC. We present the inverse slope parameter, mean transverse momentum, and yield per unit rapidity at each energy, and compare them to other measurements at different $$sqrt{s}$$ collisions. We also present the scaling properties such as $$m_T$$ and $$x_T$$ scaling and discuss the mechanism of the particle production in $$p + p$$ collisions. The measured spectra are compared to next-to-leading order perturbative QCD calculations.

Journal Articles

Performance of improved cellulose-glass fiber filter paper for radioactive aerosol sampling

Kinouchi, Nobuyuki; Onodera, Junichi; Yoshino, Toshiaki; Murata, Mikio; *

Hoken Butsuri, 30, p.309 - 314, 1995/00

no abstracts in English

Oral presentation

Study of spontaneously excited waves on plasmas with anisotropic velocity distribution

Katano, Makoto*; Ichimura, Makoto*; Yamaguchi, Yusuke*; Motegi, Yukimi*; Muro, Taishi*; Ouchi, Toshiaki*; Oishi, Junya*; Sato, Shoichi*; Ishikawa, Masao; Moriyama, Shinichi; et al.

no journal, , 

The understanding of spontaneously excited waves in plasmas with anisotropic velocity distributions is the main purpose of this presentation. In JT-60U, the ion cyclotron emissions (ICEs) due to fusion product ions have been experimentally observed. By using the local dispersion relation in hot plasmas, the excitation of slow and fast Alfv$'e$n waves are evaluated. The excitation mechanism for ICEs due to fusion product ions are discussed.

Oral presentation

Spontaneous excitation of waves due to anisotropic velocity distribution in GAMMA 10 and JT-60U

Ichimura, Makoto*; Yamaguchi, Yusuke*; Sato, Shoichi*; Katano, Makoto*; Ouchi, Toshiaki*; Muro, Taishi*; Sekihara, Yusuke*; Murakami, Tatsuya*; Moriyama, Shinichi; Kobayashi, Takayuki; et al.

no journal, , 

Fluctuations in the ion cyclotron range of frequency are investigated both on GAMMA 10 and JT-60U. Ion cyclotron emissions (ICEs) due to deuterium-deuterium fusion-product (FP) ions on JT-60U are described. ICE due to H-ions is newly identified. ICE(T) with lower frequency has larger wave numbers than ICE ($$^{3}$$He) in the same discharge. The excitation of slow Alfv$'e$n waves is elucidated for the first time as the mechanism for ICE due to T-ions. The anisotropy of T-ions at the outer plasma edge is evaluated by using Escape Particle Orbit analysis Code (EPOC).

Oral presentation

Current status of the common sample environment equipment at the MLF in J-PARC

Watanabe, Masao; Oku, Takayuki; Kawamura, Seiko; Takata, Shinichi; Su, Y.; Takahashi, Ryuta*; Yamauchi, Yasuhiro*; Nakamura, Masatoshi*; Ishikado, Motoyuki*; Sakaguchi, Yoshifumi*; et al.

no journal, , 

At Material Life Science Laboratory (MLF) in J-PARC, each beamline (BL) has standard sample environment (SE) equipment, while our SE team is organized to maintain BL common sample environment equipment and support the users. We have expensive equipment that is not frequently used but indispensable, and that requires specialized knowledge and skills for operation as BL common SE equipment. The SE team has sub-teams as;(1) cryo & magnet, (2) high temperature, (3) stress (high pressure, tension and fatigue machine), (4) soft matter, (5) humidity, (6) special environment (pulsed magnet, light irradiation and computation). In this presentation, we will explain the current status of BL common sample environment equipment.

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