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Dive into the research topics where K. Yamasaki is active.

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Featured researches published by K. Yamasaki.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2001

Thin ice target for 16O(p,p′) experiment

T. Kawabata; H. Akimune; H. Fujimura; Hisanori Fujita; Y. Fujita; M. Fujiwara; Kazufumi Hara; K. Hatanaka; K. Hosono; T. Ishikawa; M. Itoh; J. Kamiya; M. Nakamura; T. Noro; E. Obayashi; H. Sakaguchi; Y. Shimbara; H. Takeda; T. Taki; A. Tamii; H. Toyokawa; N. Tsukahara; M. Uchida; H. Ueno; T. Wakasa; K. Yamasaki; Y. Yasuda; H. P. Yoshida; M. Yosoi

Abstract A windowless and self-supporting ice target is described. An ice sheet with a thickness of 29.7 mg / cm 2 cooled by liquid nitrogen was placed at the target position of a magnetic spectrometer and worked stably in the 16 O(p,p′) experiment at E p =392 MeV . Background-free spectra were obtained.


Physical Review C | 2002

Polarization Transfer in the16O(p, p′) Reaction at Forward Angles and Structure of the Spin‐dipole Resonances

T. Kawabata; H. Akimune; G.P.A. Berg; B. A. Brown; H. Fujimura; H. Fujita; Y. Fujita; M. Fujiwara; K. Hara; K. Hatanaka; K. Hosono; T. Ishikawa; M. Itoh; J. Kamiya; M. Nakamura; T. Noro; E. Obayashi; H. Sakaguchi; Y. Shimbara; H. Takeda; T. Taki; A. Tamii; H. Toyokawa; Masaki Uchida; H. Ueno; T. Wakasa; K. Yamasaki; Y. Yasuda; H. P. Yoshida; M. Yosoi

Cross sections and polarization transfer observables in the 16O(p,p′) reactions at 392 MeV were measured at forward angles including 0°. The non‐spin‐flip (ΔS = 0) and spin‐flip (ΔS = 1) strengths in transitions to several discrete states and broad resonances in 16O were extracted using a model‐independent method. The giant resonances in the energy region of E x = 19–27 MeV were found to be predominantly excited by ΔL = 1 transitions. The strength distribution of spin‐dipole transitions with ΔS = 1 and ΔL = 1 were deduced. The obtained distribution was compared with a recent shell model calculation. Experimental results are reasonably explained by distorted‐wave impulse‐approximation calculations with the shell model wave functions.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2004

Versatile production method of thin targets supported by PVA

Y. Shimbara; Yuki Fujita; M Hamaguchi; E Mochizuki; T. Adachi; G.P.A. Berg; H. Fujimura; Hisanori Fujita; K. Fujita; K. Hara; K. Hatanaka; J. Kamiya; K. Kawase; T. Kawabata; Y. Kitamura; K. Nakanishi; N. Sakamoto; Y. Sakemi; Yohei Shimizu; Y. Tameshige; Makoto Uchida; T. Wakasa; K. Yamasaki; M. Yoshifuku; M. Yosoi


Proceedings of the 4th Italy-Japan Symposium | 2003

NUCLEAR ASTROPHYSICS EXPERIMENTS WITH A LASER-ELECTRON PHOTON BEAM

Hiroaki Utsunomiya; S. Goko; H. Akimune; K. Yamasaki; T. Yamagata; M. Ohta; Hideaki Ohgaki; H. Toyokawa; Y.-W. Lui; T. Hayakawa; Toshiyuki Shizuma; Haruo Ohkuma; S. Okajima; Kohsuke Sumiyoshi; Toshitaka Kajino


Proceedings of the International Symposium on Post-Symposium of YKIS01 | 2002

THE MASS 9 SYSTEM, 9Be AND 9B: NUCLEAR ASTROPHYSICS AND CLUSTER PHYSICS

Hiroaki Utsunomiya; H. Akimune; K. Yamasaki; S. Goko; T. Yamagata; M. Ohta; M. Fujiwara; H. Fujimura; T. Kawabata; K. Hara; M. Yosoi; T. Ishikawa; Hideaki Ohgaki; H. Toyokawa


Proceedings of the International Symposium | 2002

ISOSCALAR AND ISOVECTOR, SPIN AND ORBITAL CONTRIBUTIONS IN M1 TRANSITIONS

Y. Fujita; Y. Shimbara; T. Adachi; G.P.A. Berg; H. Fujimura; H. Fujita; I. Hamamoto; K. Hara; K. Hatanaka; F. Hofmann; J. Kamiya; T. Kawabata; Y. Kitamura; P. von Neumann-Cosel; A. Richter; Y. Shimizu; Masaki Uchida; K. Yamasaki; M. Yoshifuku; M. Yosoi


Proceedings of the International Symposium | 2002

NUCLEAR ASTROPHYSICS EXPERIMENTS WITH LASER-ELECTRON MEV PHOTONS

Hiroaki Utsunomiya; S. Goko; H. Akimune; K. Yamasaki; T. Yamagata; M. Ohta; Hideaki Ohgaki; H. Toyokawa; Y.-W. Lui; T. Hayakawa; Toshiyuki Shizuma; Kohsuke Sumiyoshi; Toshitaka Kajino


Archive | 2001

Spin-dipole resonances in 16O(pvec,pvec') reaction

T. Kawabata; H. Akimune; H. Fujimura; Hiroshi Fujita; Yuki Fujita; Makoto T. Fujiwara; Kazufumi Hara; K. Hatanaka; Daisuke Hirooka; K. Hosono; Tetsuya Ishikawa; M. Itoh; J. Kamiya; Masahiro Nakamura; T. Noro; E. Obayashi; H. Sakaguchi; Y. Shimbara; Hideaki Takeda; T. Taki; A. Tamii; Hiroyuki Toyokawa; N. Tsukahara; H. Ueno; M. Uchida; T. Wakasa; K. Yamasaki; Y. Yasuda; Hidetomo P. Yoshida; Masaru Yosoi


Archive | 2001

Evidence for a 3.8 MeV State in ^9B and the Mass 9 System

Hiroaki Utsunomiya; K. Yamasaki; H. Akimune; Toshio Yamagata; Masaki Fujimura; Masaru Yosoi; Makoto T. Fujiwara; Kazufumi Hara; Tetsuya Ishikawa; T. Kawabata


Archive | 2001

Di-triton Structure in ^6He

A. Shiokawa; H. Akimune; Toshio Yamagata; Hiroaki Utsunomiya; K. Yamasaki; Masahisa Ohta; Shigeru Nakayama; K. Fushimi; Masaru Yosoi; Mamoru Fujiwara; Keishiro Hara; Yuuichi Arimoto; M. H. Tanaka

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J. Kamiya

Japan Atomic Energy Agency

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H. Fujimura

Seoul National University

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