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NSR database version of July 31, 2015.

Search: Author = S.Okumura

Found 16 matches.

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2012FR05     Phys.Rev. C 86, 034320 (2012)

M.Freer, M.Itoh, T.Kawabata, H.Fujita, H.Akimune, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, M.Fujiwara, U.Garg, N.Hashimoto, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, R.Neveling, S.Okumura, S.M.Perez, P.Papka, H.Sakaguchi, Y.Sasamoto, F.D.Smit, J.A.Swartz, H.Takeda, S.Terashima, M.Uchida, I.Usman, Y.Yasuda, M.Yosoi, J.Zenihiro

Consistent analysis of the 2+ excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering

NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; 12C(α, α'), E=386 MeV; measured 12C excitation spectra. 12C; deduced levels, 2+ excitation of the 0+ Hoyle state. R-matrix analysis. Discussed potential geometric arrangements of the cluster structures.

doi: 10.1103/PhysRevC.86.034320
Data from this article have been entered in the XUNDL database. For more information, click here.


2011IT08     Phys.Rev. C 84, 054308 (2011)

M.Itoh, H.Akimune, M.Fujiwara, U.Garg, N.Hashimoto, T.Kawabata, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, S.Okumura, H.Sakaguchi, H.Takeda, S.Terashima, M.Uchida, Y.Yasuda, M.Yosoi, J.Zenihiro

Candidate for the 2+ excited Hoyle state at Ex ∼ 10 MeV in 12C

NUCLEAR REACTIONS 12C(α, α'), E=386 MeV; measured E(α), I(α), σ(θ) of differential cross sections. Grand Raiden spectrometer. 12C; deduced levels, J, π, l-values, isoscalar strength distributions, widths, 2+ excitation of the Hoyle resonance and the α-condensate state. DWBA analysis of σ(θ) data.

doi: 10.1103/PhysRevC.84.054308
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2157.
Data from this article have been entered in the XUNDL database. For more information, click here.


2010LI07     Phys.Rev. C 81, 034309 (2010)

T.Li, U.Garg, Y.Liu, R.Marks, B.K.Nayak, P.V.Madhusudhana Rao, M.Fujiwara, H.Hashimoto, K.Nakanishi, S.Okumura, M.Yosoi, M.Ichikawa, M.Itoh, R.Matsuo, T.Terazono, M.Uchida, Y.Iwao, T.Kawabata, T.Murakami, H.Sakaguchi, S.Terashima, Y.Yasuda, J.Zenihiro, H.Akimune, K.Kawase, M.N.Harakeh

Isoscalar giant resonances in the Sn nuclei and implications for the asymmetry term in the nuclear-matter incompressibility

NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, α'), E=386 MeV; measured Eα, Iα, excitation energies, σ(θ), σ, angular distributions, differential cross section as function of excitation energy; deduced strengths distributions, widths and EWSR for isoscalar giant monopole resonance (ISGMR), isoscalar giant-dipole resonance (ISGDR), isoscalar giant quadrupole resonance (ISGQR), and high-energy octupole resonance (HEOR). Comparisons with theoretical predictions.

doi: 10.1103/PhysRevC.81.034309
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2178.


2009HU13     Phys.Rev. C 80, 044317 (2009)

M.Hunyadi, H.Hashimoto, T.Li, H.Akimune, H.Fujimura, M.Fujiwara, Z.Gacsi, U.Garg, K.Hara, M.N.Harakeh, J.Hoffman, M.Itoh, T.Murakami, K.Nakanishi, B.K.Nayak, S.Okumura, H.Sakaguchi, S.Terashima, M.Uchida, Y.Yasuda, M.Yosoi

Proton decay from the isoscalar giant dipole resonance in 58Ni

NUCLEAR REACTIONS 58Ni(α, α'p), E=386 MeV; measured Eα, Iα, αp-coin, σ, σ(θ), and width. 58Ni; deduced isoscalar giant dipole resonance (ISGDR), associated resonance parameters and branching ratios for proton decays to 57Co; analyzed EWSR. 57Co; deduced levels, J, π. Grand Raiden spectrometer at RCNP facility. Proton branching ratios compared with continuum-RPA calculations.

doi: 10.1103/PhysRevC.80.044317
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2161.


2008ZE01     Phys.Rev. C 77, 024307 (2008)

R.G.T.Zegers, E.F.Brown, H.Akimune, Sam M.Austin, A.M.van den Berg, B.A.Brown, D.A.Chamulak, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.Itoh, T.Kawabata, K.Kawase, M.Kinoshita, K.Nakanishi, S.Nakayama, S.Okumura, Y.Shimbara, M.Uchida, H.Ueno, T.Yamagata, M.Yosoi

Gamow-Teller strength for the analog transitions to the first T = 1/2, Jπ = 3/2- states in 13C and 13N and the implications for type Ia supernovae

NUCLEAR REACTIONS 13C(3He, t), E=420 MeV; measured charged particles, σ(θ); deduced B(GT), levels, J, π. 13C(p, n); deduced electron capture rates in stellar environments as a function of temperature.

doi: 10.1103/PhysRevC.77.024307
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2097.
Data from this article have been entered in the XUNDL database. For more information, click here.


2007GA44     Nucl.Phys. A788, 36c (2007)

U.Garg, T.Li, S.Okumura, H.Akimune, M.Fujiwara, M.N.Harakeh, H.Hashimoto, M.Itoh, Y.Iwao, T.Kawabata, K.Kawase, Y.Liu, R.Marks, T.Murakami, K.Nakanishi, K.Nayak, P.V.Madhusudhana Rao, H.Sakaguchi, Y.Terashima, M.Uchida, Y.Yasuda, M.Yosoi, J.Zenihiro

The Giant Monopole Resonance in the Sn Isotopes: Why is Tin so "Fluffy"?

NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, α'), E=400 MeV; measured Eα, Iα, σ(E, θ). 112,114,116,118,120,122,124Sn deduced GMR energy, strength distributions, moment ratios. Comparison with other data and calculations.

doi: 10.1016/j.nuclphysa.2007.01.046


2007LI61     Phys.Rev.Lett. 99, 162503 (2007)

T.Li, U.Garg, Y.Liu, R.Marks, B.K.Nayak, P.V.Madhusudhana Rao, M.Fujiwara, H.Hashimoto, K.Kawase, K.Nakanishi, S.Okumura, M.Yosoi, M.Itoh, M.Ichikawa, R.Matsuo, T.Terazono, M.Uchida, T.Kawabata, H.Akimune, Y.Iwao, T.Murakami, H.Sakaguchi, S.Terashima, Y.Yasuda, J.Zenihiro, M.N.Harakeh

Isotopic Dependence of the Giant Monopole Resonance in the Even-A 112-124Sn Isotopes and the Asymmetry Term in Nuclear Incompressibility

NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, α'), E=400 MeV; measured Eα, Iα. Deduced GMR strength distributions.

doi: 10.1103/PhysRevLett.99.162503
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2080.


2007ME25     Nucl.Instrum.Methods Phys.Res. B264, 221 (2007)

R.Meharchand, H.Akimune, A.M.van den Berg, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.Itoh, T.Kawabata, K.Kawase, M.Kinoshita, K.Nakanishi, S.Nakayama, S.Okumura, Y.Shimbara, M.Uchida, T.Yamagata, M.Yosoi, R.G.T.Zegers

Atomic charge-exchange between semi-relativistic (ν/c = 0.49) helium ions and targets from carbon to lead

NUCLEAR REACTIONS C, Mg, Ni, Zr, Sn, Pb(3He, 3He), E=420 MeV; measured singly to doubly charged yield ratios. Compared results to model calculations.

doi: 10.1016/j.nimb.2007.08.078


2007ZE06     Phys.Rev.Lett. 99, 202501 (2007)

R.G.Zegers, T.Adachi, H.Akimune, S.M.Austin, A.M.van den Berg, B.A.Brown, Y.Fujita, M.Fujiwara, S.Gales, C.J.Guess, M.N.Harakeh, H.Hashimoto, K.Hatanaka, R.Hayami, G.W.Hitt, M.E.Howard, M.Itoh, T.Kawabata, K.Kawase, M.Kinoshita, M.Matsubara, K.Nakanishi, S.Nakayama, S.Okumura, T.Ohta, Y.Sakemi, Y.Shimbara, Y.Shimizu, C.Scholl, C.Simenel, Y.Tameshige, A.Tamii, M.Uchida, T.Yamagata, M.Yosoi

Extraction of Weak Transition Strengths via the (3He, t) Reaction at 420 MeV

NUCLEAR REACTIONS 12,13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 208Pb(3He, t), E=420 MeV; measured triton spectra and cross sections. Deduced B(GT).

doi: 10.1103/PhysRevLett.99.202501
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2088.


2006YA06     Phys.Rev. C 74, 014309 (2006)

T.Yamagata, N.Warashina, H.Akimune, S.Asaji, M.Fujiwara, M.B.Greenfield, H.Hashimoto, R.Hayami, T.Ishida, K.Kawase, M.Kinoshita, T.Kudoh, K.Nakanishi, S.Nakayama, S.Okumura, K.Sagara, M.Tanaka, H.Utsunomiya, M.Yosoi

Excitation of dipole resonances in 4He and in the α clusters of 6Li and 7Li

NUCLEAR REACTIONS 4He(p, p'), E=300 MeV; measured Ep, σ(E, θ). 6,7Li(p, p'), E=300 MeV; analyzed Ep, σ(E, θ). 4He, 6,7Li deduced dipole resonance energies, widths.

doi: 10.1103/PhysRevC.74.014309
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1993.


2006ZE01     Phys.Rev. C 74, 024309 (2006)

R.G.T.Zegers, H.Akimune, S.M.Austin, D.Bazin, A.M.van den Berg, G.P.A.Berg, B.A.Brown, J.Brown, A.L.Cole, I.Daito, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.E.Howard, M.Itoh, J.Janecke, T.Kawabata, K.Kawase, M.Kinoshita, T.Nakamura, K.Nakanishi, S.Nakayama, S.Okumura, W.A.Richter, D.A.Roberts, B.M.Sherrill, Y.Shimbara, M.Steiner, M.Uchida, H.Ueno, T.Yamagata, M.Yosoi

The (t, 3He) and (3He, t) reactions as probes of Gamow-Teller strength

NUCLEAR REACTIONS 26Mg(t, 3He), E=115 MeV/nucleon; 26Mg(3He, t), E=140 MeV/nucleon; measured σ(E, θ); deduced Gamow-Teller transition strengths. Comparison with model predictions.

doi: 10.1103/PhysRevC.74.024309
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1997.
Data from this article have been entered in the XUNDL database. For more information, click here.


2004IT09     Nucl.Phys. A738, 268 (2004)

M.Itoh, H.Akimune, M.Fujiwara, U.Garg, H.Hashimoto, T.Kawabata, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, S.Okumura, H.Sakaguchi, H.Takeda, S.Terashima, M.Uchida, Y.Yasuda, M.Yosoi, J.Zenihiro

Study of the cluster state at Ex=10.3 MeV in 12C

NUCLEAR REACTIONS 12C(α, α'), E=386 MeV; measured Eα, σ(E, θ); deduced cluster state energy, J, π.

doi: 10.1016/j.nuclphysa.2004.04.044


2004YO06     Nucl.Phys. A738, 451 (2004)

M.Yosoi, H.Akimune, I.Daito, H.Ejiri, H.Fujimura, M.Fujiwara, K.Fushimi, K.Hara, K.Y.Hara, H.Hashimoto, T.Ishikawa, M.Itoh, Y.Itow, S.Kishi, T.Kawabata, K.Kawase, M.Kinoshita, K.Kobayashi, M.Nakamura, K.Nakanishi, Y.Nakatsugawa, S.Nakayama, T.Noro, E.Obayashi, S.Okumura, H.Sakaguchi, Y.Sakemi, M.Shiozawa, H.Takeda, T.Taki, A.Tamii, M.Tanaka, S.Terashima, H.Toyokawa, N.Tsukahara, M.Uchida, T.Yamada, T.Yamagata, Y.Yasuda, H.P.Yoshida, R.G.T.Zegers, J.Zenihiro

Cluster fragmentations of deep (1s)-hole states in light nuclei

NUCLEAR REACTIONS 7Li, 12C, 16O(p, 2p), E=392 MeV; measured excitation energy spectra, decay fragment spectra from deep-hole states. 6He, 11B, 15N deduced cluster structure features.

doi: 10.1016/j.nuclphysa.2004.04.084
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1819.


1992IE01     J.Phys.(London) G18, 401 (1992)

K.Ieki, N.Iwasa, Y.Ando, K.Hata, T.Motobayashi, H.Murakami, M.Ogiwara, J.-Z.Ruan, S.Shibuya, S.Shirato, H.Fujiwara, S.C.Jeong, S.M.Lee, T.Mizota, Y.Nagashima, M.Ogihara, S.Okumura, Y.H.Pu, M.Ishihara

Dynamics of the Projectile-Like Fragment Emission in the 40Ar + 209Bi Reaction at 26 MeV u-1

NUCLEAR REACTIONS 209Bi(40Ar, X), (40Ar, F), E=26 MeV/nucleon; measured fission, projectile-like (fragment)(fragment)(θ); deduced projectile-like fragment emission dynamics, angular momentum transfer, spin alignment, linear momentum transfer.

doi: 10.1088/0954-3899/18/2/020


1968YA02     J.Phys.Soc.Japan 24, 667 (1968)

T.Yanabu, S.Yamashita, K.Hosono, S.Matsuki, T.Tanabe, K.Takimoto, Y.Okuma, K.Ogino, S.Okumura, R.Ishiwari

Quasi-Free α-α Scattering in Be9 and C12 at 37 MeV

NUCLEAR STRUCTURE 12C, 9Be; measured not abstracted; deduced nuclear properties.


1967OK01     Nucl.Phys. A93, 74 (1967)

S.Okumura

Isomer Pair Cross Sections by 13.4-15.0 MeV Neutrons

NUCLEAR REACTIONS 58Ni(n, p), 59Co(n, 2n), 75As(n, p), 76Ge(n, 2n), 79Br(n, 2n), 81Br(n, 2n), E = 13.39-14.96 MeV; measured σ. Natural targets.

doi: 10.1016/0375-9474(67)90172-8
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20303.


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