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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:176 Percentile:99.41(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

Azimuthal correlations of electrons from heavy-flavor decay with hadrons in $$p+p$$ and Au+Au collisions at $$sqrt{s_{NN}}$$ = 200 GeV

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

Physical Review C, 83(4), p.044912_1 - 044912_16, 2011/04

 Times Cited Count:7 Percentile:49.81(Physics, Nuclear)

Measurements of electrons from the decay of open-heavy-flavor mesons have shown that the yields are suppressed in Au+Au collisions compared to expectations from binary-scaled $$p+p$$ collisions. Here we extend these studies to two particle correlations where one particle is an electron from the decay of a heavy flavor meson and the other is a charged hadron from either the decay of the heavy meson or from jet fragmentation. These measurements provide more detailed information about the interaction between heavy quarks and the quark-gluon matter. We find the away-side-jet shape and yield to be modified in Au+Au collisions compared to $$p+p$$ collisions.

Journal Articles

Recent status and prospects of Russian surplus weapons plutonium disposition

Kawata, Norio; Yano, Soichiro

Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-27-Kai Nenji Taikai Rombunshu (CD-ROM), 9 Pages, 2006/00

Russian Surplus W-Pu was produced by byproducts of disarmament of nuclear weapon and recognized as a serious threat of nuclear proliferation. US and RF concluded an agreement to dispose of no less than 34 ton-Pu each in 2000. G7 countries including Japan jointed to collaborative investigation to dispose of Russian W-Pu. Relative countries have been discussing the scenario of Pu disposition mainly by burning in LWR (VVER1000) with MOX pellet fuel and FR (BN600) with MOX vipac fuel, however actual disposition work faced dead lock since estimated necessary cost is more than 3 times of pledged finance by G7 countries. JAEA has conducted to realize BN600 vipac fuel option, which is MOX vipac fuel made with W-Pu is burned in BN600 reactor, based on experiences of Pu utilization and fast reactor technology in a decade years. Technical feasibility is established through several cooperative studies with Russian Institutes. Since this option is confirmed as a low-cost and early disposition method, recently, US and RF seek to accelerate this option prior to VVER1000 option. This paper will provide a description of progress on BN600 vipac fuel option and future prospects of whole plan of Russian Surplus W-Pu disposition of 34 ton.

JAEA Reports

None

Kamimura, Katsuichiro; Yano, Soichiro; Kono, Shusaku; Kato, Masato; Morimoto, Kyoichi; Morihira, Masayuki; Kikuchi, Keiichi

PNC TN8410 97-067, 452 Pages, 1997/02

PNC-TN8410-97-067.pdf:37.67MB

None

Journal Articles

None

Kato, Masato; Yano, Soichiro; ; Kamimura, Katsuichiro;

Donen Giho, (94), p.53 - 62, 1995/06

None

JAEA Reports

None

Kamimura, Katsuichiro; Iijima, Takashi*; Yano, Soichiro

PNC TN8410 95-296, 186 Pages, 1995/05

PNC-TN8410-95-296.pdf:7.44MB

None

Oral presentation

Resent status and prospects of Russian surplus weapons plutonium disposition

Kawata, Norio; Yano, Soichiro

no journal, , 

Russian Surplus W-Pu was produced by byproducts of disarmament of nuclear weapon and recognized as a serious threat of nuclear proliferation. US and RF concluded an agreement to dispose of no less than 34 ton-Pu each in 2000. JAEA has conducted to realize BN600 vipac fuel option, which is MOX vipac fuel made with W-Pu is burned in BN600 reactor, based on experiences of Pu utilization and fast reactor technology in a decade years. Technical feasibility is established through several cooperative studies with Russian Institutes. Since this option is confirmed as a low-cost and early disposition method, recently, US and RF seek to accelerate this option prior to VVER1000 option. This paper will provide a description of progress on BN600 vipac fuel option and future prospects of whole plan of Russian Surplus W-Pu disposition of 34 ton.

Oral presentation

Research and development program of vibro-packed fuel assemblies and its current status

Tanaka, Yasumasa*; Kasai, Yoshimitsu*; Himeno, Yoshiaki*; Kawata, Norio; Yano, Soichiro; Aratani, Kiyonori; Kisly, V.*; Bychikov, A.*

no journal, , 

no abstracts in English

Oral presentation

Fabrication of vibro-packed fuel assemblies, 3; Fabrication result in RIAR

Komiyama, Kazumasa*; Tanaka, Yasumasa*; Shikakura, Sakae*; Kasai, Yoshimitsu*; Kawata, Norio; Yano, Soichiro; Kisly, V.*; Lipatov, A.*

no journal, , 

no abstracts in English

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