Papers - AKIMUNE Hidetoshi
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Evidence for a Narrow S=+1 Baryon Resonance in Photoproduction from the Neutron
T Nakano, DS Ahn, JK Ahn, H Akimune, Y Asano, WC Chang, S Date, H Ejiri, H Fujimura, M Fujiwara, K Hicks, T Hotta, K Imai, T Ishikawa, T Iwata, H Kawai, ZY Kim, K Kino, H Kohri, N Kumagai, S Makino, T Matsumura, N Matsuoka, T Mibe, K Miwa, M Miyabe, Y Miyachi, M Morita, N Muramatsu, M Niiyama, M Nomachi, Y Ohashi, T Ooba, H Ohkuma, DS Oshuev, C Rangacharyulu, A Sakaguchi, T Sasaki, PM Shagin, Y Shiino, H Shimizu, Y Sugaya, M Sumihama, H Toyokawa, A Wakai, CW Wang, SC Wang, K Yonehara, T Yorita, M Yoshimura, M Yosoi, RGT Zegers
Phys. Rev. Lett. 91 12002 2003.11
Joint Work
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A new astrophysical gamma probe and its applications
H Utsunomiya, H Akimune, S Goko, T Hayakawa, YW Lui, H Ohgaki, M Ohta, T Shizuma, H Toyokawa, T Yamagata
NUCLEAR PHYSICS A 718 ( 1-2 ) 199C - 206C 2003.5
Joint Work
Publisher：ELSEVIER SCIENCE BV
We discuss the properties of gamma beams produced by Compton back-scattering of laser light from relativistic electrons at AIST and SPring-8 and their applications to nuclear astrophysics experiments.
DOI： 10.1016/S0375-9474(03)00715-2
Other Link： http://orcid.org/0000-0001-5237-5718
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M Uchida, H Sakaguchi, M Itoh, M Yosoi, T Kawabata, H Takeda, Y Yasuda, T Murakami, T Ishikawa, T Taki, N Tsukahara, S Terashima, U Garg, M Hedden, B Kharraja, M Koss, BK Nayak, S Zhu, M Fujiwara, H Fujimura, K Hara, E Obayashi, HP Yoshida, H Akimune, MN Harakeh, M Volkerts
PHYSICS LETTERS B 557 ( 1-2 ) 12 - 19 2003.3
Joint Work
Publisher：ELSEVIER SCIENCE BV
The isoscalar giant dipole resonance (ISGDR) in Pb-208 has been investigated with inelastic a-scattering of 400 MeV at extremely forward angles, including 0degrees. Energy spectra, virtually free from instrumental background, have been obtained and the ISGDR strength distribution has been extracted using a multipole-decomposition analysis (MDA). A difference-of-spectra approach yields the same ISGDR centroid energy as with MDA. These results lead to a value for nuclear incompressibility that is consistent for both the isoscalar dipole and monopole modes. (C) 2003 Elsevier Science B.V All rights reserved.
DOI： 10.1016/S0370-2693(03)00137-0
Other Link： http://orcid.org/0000-0001-5237-5718
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H Utsunomiya, H Akimune, S Goko, M Ohta, H Ueda, T Yamagata, K Yamasaki, H Ohgaki, H Toyokawa, YW Lui, T Hayakawa, T Shizuma, E Khan, S Goriely
PHYSICAL REVIEW C 67 ( 1 ) 15807 2003.1
Joint Work
Publisher：AMERICAN PHYSICAL SOC
New measurements of the photoneutron reaction on Ta-181 have been conducted with the AIST-LCS (laser Compton scattering) beam in the 7.8less than or similar toE[MeV]less than or similar to12 energy range. The major advantage of the present gamma-ray experiment is its intense peaking in the energy window of astrophysical interest, i.e., close to the neutron threshold. Details on photon beams from the laser Compton scattering, neutron counting, and experimental determination of the Ta-181 photoneutron cross section are given. The present experimental data are in good agreement with the IAEA evaluation. Reaction rate calculations in the Hauser-Feshbach statistical model are performed and confronted with the experimental data. The data provide constraints on the low-energy tail of the dipole strength function. It is found that among the three different models for the E1-strength considered, only the microscopic quasiparticle random phase approximation model can reproduce the extra strength observed in the Ta-181(gamma,n)Ta-180 reaction at energies of about 8.5 MeV. Such an experiment helps to improve the determination of the corresponding stellar photodisintegration rate of Ta-181 which directly influences the p-process production of Ta-180.
DOI： 10.1103/PhysRevC.67.015807
Other Link： http://orcid.org/0000-0001-5237-5718
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Di-triton molecular structure in 6He
Akimune H, Yamagata T, Nakayama S, Arimoto Y, Fujiwara M, Fushimi K, Hara K, Ohta M, Shiokawa A, Tanaka M, Utsunomiya H, Hara K.Y, Yoshida H.P, Yosoi M.
Physical Review C - Nuclear Physics 67 ( 5 ) 513021 - 513024 2003
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Utsunomiya H, Akimune H, Goko S, Ohta M, Ueda H, Yamagata T, Yamasaki K, Ohgaki H, Toyokawa H, Lui Y.-W, Hayakawa T, Shizuma T, Khan E, Goriely S.
Physical Review C - Nuclear Physics 67 ( 1 ) 158071 - 158079 2003
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Zegers R.G.T, Sumihama M, Ahn D.S, Ahn J.K, Akimune H, Asano Y, Chang W.C, Dat{\'e} S, Ejiri H, Fujimura H, Fujiwara M, Hicks K, Hotta T, Imai K, Ishikawa T, Iwata T, Kawai H, Kim Z.Y, Kino K, Kohri H, Kumagai N, Makino S, Matsumura T, Matsuoka N, Mibe T, Miwa K, Miyabe M, Miyachi Y, Morita M, Muramatsu N, Nakano T, Niiyama M, Nomachi M, Ohashi Y, Ooba T, Ohkuma H, Oshuev D.S, Rangacharyulu C, Sakaguchi A, Sasaki T, Shagin P.M, Shiino Y, Shimizu H, Sugaya Y, Toyokawa H, Wakai A, Wang C.W, Wang S.C, Yonehara K, Yorita T, Yoshimura M, Yosoi M.
Physical Review Letters 91 ( 9 ) 920011 - 920014 2003
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Zegers R.G.T, Sumihama M, Ahn D.S, Ahn J.K, Akimune H, Asano Y, Chang W.C, Dat{\'e} S, Ejiri H, Fujimura H, Fujiwara M, Hicks K, Hotta T, Imai K, Ishikawa T, Iwata T, Kawai H, Kim Z.Y, Kino K, Kohri H, Kumagai N, Makino S, Matsumura T, Matsuoka N, Mibe T, Miwa K, Miyabe M, Miyachi Y, Morita M, Muramatsu N, Nakano T, Niiyama M, Nomachi M, Ohashi Y, Ooba T, Ohkuma H, Oshuev D.S, Rangacharyulu C, Sakaguchi A, Sasaki T, Shagin P.M, Shiino Y, Shimizu H, Sugaya Y, Toyokawa H, Wakai A, Wang C.W, Wang S.C, Yonehara K, Yorita T, Yoshimura M, Yosoi M.
Physical Review Letters 91 ( 9 ) 2003
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Evidence for a Narrow [Formula presented] Baryon Resonance in Photoproduction from the Neutron
Nakano T, Ahn D.S, Ahn J.K, Akimune H, Asano Y, Chang W.C, Dat{\'e} S, Ejiri H, Fujimura H, Fujiwara M, Hicks K, Hotta T, Imai K, Ishikawa T, Iwata T, Kawai H, Kim Z.Y, Kino K, Kohri H, Kumagai N, Makino S, Matsumura T, Matsuoka N, Mibe T, Miwa K, Miyabe M, Miyachi Y, Morita M, Muramatsu N, Niiyama M, Nomachi M, Ohashi Y, Ooba T, Ohkuma H, Oshuev D.S, Rangacharyulu C, Sakaguchi A, Sasaki T, Shagin P.M, Shiino Y, Shimizu H, Sugaya Y, Sumihama M, Toyokawa H, Wakai A, Wang C.W, Wang S.C, Yonehara K, Yorita T, Yoshimura M, Yosoi M, Zegers R.G.T.
Physical Review Letters 91 ( 1 ) 2003
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Microscopic structure of the Gamow-Teller resonance in 58Cu
Hara K, Adachi T, Akimune H, Daito I, Fujimura H, Fujita Y, Fujiwara M, Fushimi K, Hara K.Y, Harakeh M.N, Ichihara K, Ishikawa T, J{\"a}necke J, Kamiya J, Kawabata T, Kawase K, Nakanishi K, Sakemi Y, Shimbara Y, Shimizu Y, Uchida M, Yoshida H.P, Yosoi M, Zegers R.G.T.
Physical Review C - Nuclear Physics 68 ( 6 ) 646121 - 646129 2003
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Zegers R.G.T, Abend H, Akimune H, van den Berg A.M, Fujimura H, Fujita H, Fujita Y, Fujiwara M, Gal{\`e}s S, Hara K, Harakeh M.N, Ishikawa T, Kawabata T, Kawase K, Mibe T, Nakanishi K, Nakayama S, Toyokawa H, Uchida M, Yamagata T, Yamasaki K, Yosoi M.
Physical Review Letters 90 ( 20 ) 4 2003
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Zegers R.G.T, Abend H, Akimune H, Van Den Berg A.M, Fujimura H, Fujita H, Fujita Y, Fujiwara M, Gal{\`e}s S, Hara K, Harakeh M.N, Ishikawa T, Kawabata T, Kawase K, Mibe T, Nakanishi K, Nakayama S, Toyokawa H, Uchida M, Yamagata T, Yamasaki K, Yosoi M.
Physical Review Letters 90 ( 20 ) 2003
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Systematic study of L≤3 giant resonances in Sm isotopes via multipole decomposition analysis
Itoh M, Sakaguchi H, Uchida M, Ishikawa T, Kawabata T, Murakami T, Takeda H, Taki T, Terashima S, Tsukahara N, Yasuda Y, Yosoi M, Garg U, Hedden M, Kharraja B, Koss M, Nayak B.K, Zhu S, Fujimura H, Fujiwara M, Hara K, Yoshida H.P, Akimune H, Harakeh M.N, Volkerts M
Physical Review C - Nuclear Physics 68 ( 6 ) 646021 - 6460210 2003
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Recent results of LEPS at SPring-8
Nakano T, Ahn D.S, Ahn J.K, Akimune H, Asano Y, Bhang H.C, Chang W.C, Dat{\'e} S, Ejiri H, Fujimura H, Fujiwara M, Hicks K, Hotta T, Imai K, Ishikawa T, Iwata T, Kawai H, Kim Z.Y, Kino K, Klein F.J, Kohri H, Kumagai N, Makino S, Matsuda T, Matsumura T, Matsuoka N, Mibe T, Miwa K, Miyabe M, Miyachi Y, Morita M, Muramatsu N, Nakamura H, Niiyama M, Nomachi M, Ohashi Y, Ooba T, Ohkuma H, Oshuev D.S, Rangacharyulu C, Sakaguchi A, Sasaki T, Seki D, Shagin P.M, Shiino Y, Shimizu H, Sugaya Y, Sumihama M, Toi Y, Toyokawa H, Wakai A, Wang C.W, Wang S.C, Yonehara K, Yorita T, Yoshimura M, Yosoi M, Zegers R.G.T
Nuclear Physics A 721 C112 - C117 2003
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Photodisintegration of deuterium and big bang nucleosynthesis
Hara K.Y, Utsunomiya H, Goko S, Akimune H, Yamagata T, Ohta M, Toyokawa H, Kudo K, Uritani A, Shibata Y, Lui Y.-W, Ohgaki H
Physical Review D 68 ( 7 ) 2003
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Evidence for a narrow S = +1 baryon resonance in photoproduction from the neutron
Nakano T, Ahn D.S, Ahn J.K, Akimune H, Asano Y, Chang W.C, Dat{\'e} S, Ejiri H, Fujimura H, Fujiwara M, Hicks K, Hotta T, Imai K, Ishikawa T, Iwata T, Kawai H, Kim Z.Y, Kino K, Kohri H, Kumagai N, Makino S, Matsumura T, Matsuoka N, Mibe T, Miwa K, Miyabe M, Miyachi Y, Morita M, Muramatsu N, Niiyama M, Nomachi M, Ohashi Y, Ooba T, Ohkuma H, Oshuev D.S, Rangacharyulu C, Sakaguchi A, Sasaki T, Shagin P.M, Shiino Y, Shimizu H, Sugaya Y, Sumihama M, Toyokawa H, Wakai A, Wang C.W, Wang S.C, Yonehara K, Yorita T, Yoshimura M, Yosoi M, Zegers R.G.T
Physical Review Letters 91 ( 1 ) 2003
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Evidence for an exotic S=+1 baryon resonance at a mass of 1540 MeV Reviewed
KH Hicks, DS Ahn, JK Ahn, H Akimune, Y Asano, WC Chang, S Date, H Ejiri, H Fujimura, M Fujiwara, K Hicks, T Hotta, K Imai, T Ishikawa, T Iwata, H Kawai, ZY Kim, K Kino, H Kohri, NK Gai, S Makino, T Matsumura, N Matsuoka, T Mibe, K Miwa, M Miyabe, Y Miyachi, M Morita, N Muramatsu, T Nakano, M Niiyama, M Nomachi, Y Ohashi, T Ooba, H Ohkuma, DS Oshuev, C Rangacharyulu, A Sakaguchi, T Sasaki, R Shagin, Y Shiino, H Shimizu, Y Sugaya, MS Hama, H Toyokawa, A Wakai, CW Wang, SC Wang, K Yonehara, T Yorita, M Yoshimura, M Yosoi, RGT Zegers
INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS 698 539 - 542 2003
Joint Work
Publisher：AMER INST PHYSICS
A new baryon resonance with manifestly exotic strangeness quantum number S = +1 was first observed from the LEPS detector at the SPring-8 facility in Japan. The photoproduction reaction gamman --> K(-)Theta(+) was measured, where the neutron is bound in a C-12 nucleus and the Theta(+) is the new name of this resonance. The existence of the Theta(+) was inferred by observing a peak in the missing mass spectrum of the K-, with the requirement of a coincident K+ in the detector from the decay of the Theta(+). The mass of the resonance is 1.54 +/- 0.01 GeV and a width of < 25 MeV.
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Polarization transfer in the 16O(p,p’) reaction at forward angles and structure of the spin-dipole resonance
秋宗 秀俊
Phys. Rev. C65,064316 2002.11
Single Work
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Compressional-Mode Giant Resonances in Deformed Nuclei
秋宗 秀俊
Phys. Lett. 549B, 58 2002.11
Single Work
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Cluster-Excitations in $^{6}$Li and $^{7}$Li Reviewed
S. Nakayama, T. Yamagata, H. Akimune, I. Daito, H. Fujimura, Y. Fujita, M. Fujiwara, K. Fushimi, M. B. Greenfield, H. Kohri, N. Koori, K. Takahisa, A. Tamii, M. Tanaka, H. Toyokawa
Prog.Theor.Phys.(Kyoto) Suppl. 146, 603 2002.11
Joint Work