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NSR database version of April 11, 2024.

Search: Author = Y.Iwata

Found 75 matches.

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2024SA07      Phys.Rev. C 109, 024301 (2024)

Sh.Sarkar, P.K.Rath, V.Nanal, R.G.Pillay, PushpendraP.Singh, Y.Iwata, K.Jha, P.K.Raina

Calculation of nuclear matrix elements for 0νββ decay of 124Sn using the nonclosure approach in the nuclear shell model

doi: 10.1103/PhysRevC.109.024301
Citations: PlumX Metrics


2023SA42      Universe 9, 444 (2023)

S.Sarkar, Y.Iwata

Effect of Spin-Dependent Short-Range Correlations on Nuclear Matrix Elements for Neutrinoless Double Beta Decay of 48Ca

RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix elements (NMEs) for the light neutrino-exchange mechanism in neutrinoless double beta employing an extensive interacting nuclear shell model employing the effective shell model Hamiltonian GXPF1A, encompassing the entire fp model space through the closure approximation; deduced the impact of spin-dependent short-range correlations (SRCs).

doi: 10.3390/universe9100444
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2022IW01      Phys.Rev. C 105, 044603 (2022)

Y.Iwata, T.Nishikawa

Inertial energy dissipation in nuclear dynamics

NUCLEAR STRUCTURE 234,236,238,240,242U, 236,238,240,242,244Pu, 238,240,242,244,246Cm, 240,242,244,246,248Cf, 242,244,246,248,250Fm; calculated friction coefficients, fission fragment yields. Proposed Three different types of dissipation mechanism depending on the energy. Microscopic time-dependent density function theory (TDDFT) with macroscopic Langevin model. Comparison to available experimental data.

doi: 10.1103/PhysRevC.105.044603
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2020SA35      Phys.Rev. C 102, 034317 (2020)

S.Sarkar, Y.Iwata, P.K.Raina

Nuclear matrix elements for the Λ mechanism of 0νββ decay of 48Ca in the nuclear shell-model: Closure versus nonclosure approach

RADIOACTIVITY 48Ca(2β); calculated nuclear matrix elements (NMEs) for the 0νββ decay mode, distribution of NMEs as function of neutrino momentum transfer, radial distribution of NMEs as function of internucleon distance, contribution from spin-parity of virtual intermediate states of 48Sc, contribution through different coupled spin-parity of two initial neutrons or two final created protons, Fermi, Gamow-Teller, tensor, and total 0νββ NMEs as function of cutoff excitation energy of states of virtual intermediate nucleus 48Sc. Interacting shell-model with the GXPF1A effective interaction of pf shell in Miller-Spencer, CD-Bonn, and AV18 SRC parametrizations, and using closure, running closure, running nonclosure, and mixed methods.

doi: 10.1103/PhysRevC.102.034317
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2019TE05      Phys.Rev. C 100, 034325 (2019)

J.Terasaki, Y.Iwata

Isoscalar pairing interaction for the quasiparticle random-phase approximation approach to double-β and β decays

RADIOACTIVITY 130Te, 136Xe(2β-); calculated nuclear matrix elements of 0νββ and 2νββ decay modes, half-lives, and Gamow-Teller transition strength, GT sum rule. Comparison with experimental half-lives. 48Ca, 130Te, 136Xe(2β-); calculated R1/2 parameter and compared with 26 previous theoretical calculations based on IBM-2, QRPA, GCM and SM models. 132Te, 138Xe(β-); calculated logft values and B(GT), and compared with experimental data. Proton-neutron quasiparticle random-phase approximation (pn-QRPA), and the Hamiltonian from Skyrme energy density functional SkM*.

NUCLEAR STRUCTURE 130Te, 130,136Xe, 136Ba; calculated average pairing gaps of the protons and neutrons, and quadrupole deformation β from Hartree-Fock-Bogoliubov (HFB) solutions; calculated strengths of proton-proton, neutron-neutron, isovector proton-neutron, and isoscalar proton-neutron pairing interactions. 130I, 136Cs; calculated levels, J, π of the intermediate nuclei from pnQRPA calculation based on 130Te and 130Xe for 130I, and based on 136Xe and 136Ba for 136Cs. 138Cs; calculated energies of 1+ levels. Comparison with experimental spectra. Proton-neutron quasiparticle random-phase approximation (pn-QRPA) with Skyrme interaction.

NUCLEAR REACTIONS 130Te(3He, t)130I; 136Xe(3He, t)136Cs; calculated GT- strengths using QRPA and compared with experimental data.

doi: 10.1103/PhysRevC.100.034325
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2019TS03      Nucl.Instrum.Methods Phys.Res. B449, 62 (2019)

P.-E.Tsai, L.H.Heilbronn, B.-L.Lai, Y.Iwata, T.Murakami, R.-J.Sheu

Thick target neutron yields from 100- and 230-MeV/nucleon helium ions bombarding water, PMMA, and iron

NUCLEAR REACTIONS Fe, O(α, X)1NN, E=100, 230 MeV/nucleon; measured reaction products, En, In; deduced thick target neutron yields. Comparison with theoretical calculations.

doi: 10.1016/j.nimb.2019.04.030
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2017ST13      Phys.Rev. C 96, 014612 (2017)

J.R.Stone, P.Danielewicz, Y.Iwata

Proton and neutron density distributions at supranormal density in low- and medium-energy heavy-ion collisions

NUCLEAR REACTIONS 40Ca(40Ca, X), 48Ca(48Ca, X), 100Sn(100Sn, X), 120Sn(120Sn, X), 48Ca(40Ca, X), 120Sn(100Sn, X), E<800 MeV/nucleon; calculated time evolution of maximal proton and neutron densities, Contour plots of neutron and proton densities, maximum neutron and proton densities and asymmetry parameter. Boltzmann-Uhlenbeck-Uehling (pBUU) transport model, with time-dependent Hartree-Fock (TDHF) model and Skyrme interaction for heavy-ion collisions at E<40 MeV/nucleon. 40,48Ca, 100,120Sn; calculated neutron and proton densities as a function of distance from the center of nucleus from static Hartree-Fock (HF) and Thomas-Fermi (TF) equations.

doi: 10.1103/PhysRevC.96.014612
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2016IW02      Phys.Rev.Lett. 116, 112502 (2016)

Y.Iwata, N.Shimizu, T.Otsuka, Y.Utsuno, J.Menendez, M.Honma, T.Abe

Large-Scale Shell-Model Analysis of the Neutrinoless ββ Decay of 48Ca

RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix element for the neutrinoless double-beta decay using large-scale shell-model calculations.

doi: 10.1103/PhysRevLett.116.112502
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2015IW01      Phys.Rev. C 92, 011303 (2015)

Y.Iwata, T.Ichikawa, N.Itagaki, J.A.Maruhn, T.Otsuka

Examination of the stability of a rod-shaped structure in 24Mg

NUCLEAR STRUCTURE 24Mg; calculated density profiles of the initial states of six-α clusters, contours of final states of compact shape, rod shape, and fragmentation, comparison of energies with and without the spin-orbit interaction as a function of rotational frequency; deduced rod-shaped structure of 24Mg with large angular momentum as a metastable stationary state. Cranked Hartree-Fock calculation with several different Skyrme-type interactions.

doi: 10.1103/PhysRevC.92.011303
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2013IW01      Phys.Rev. C 87, 014609 (2013)

Y.Iwata, K.Iida, N.Itagaki

Synthesis of thin, long heavy nuclei in ternary collisions

doi: 10.1103/PhysRevC.87.014609
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2013IW03      J.Phys.:Conf.Ser. 445, 012017 (2013)

Y.Iwata

Time-scaled scenario of low-energy heavy-ion collisions

doi: 10.1088/1742-6596/445/1/012017
Citations: PlumX Metrics


2011HE14      Nucl.Sci.Eng. 169, 279 (2011)

L.Heilbronn, C.J.Zeitlin, Y.Iwata, T.Murakami, T.Nakamura, S.Yonai, R.M.Ronningen, H.Iwase

Neutron-Production Yields from 400 MeV/Nucleon Iron Stopping in Carbon, Aluminum, Copper, and Lead Targets

NUCLEAR REACTIONS C, Al, Cu, Pb(56Fe, X), E=400 MeV/nucleon; measured reaction products, En, In; deduced thick target yields and ratios, σ(E, θ).

doi: 10.13182/NSE10-112
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2011IW01      Phys.Rev. C 84, 014616 (2011)

Y.Iwata, J.A.Maruhn

Enhanced spin-current tensor contribution in collision dynamics

NUCLEAR REACTIONS 40Ca(40Ca, X), E(cm)=130 MeV; calculated spin-current tensor contribution and its dependence on mass of the colliding system. Time-dependent density functional calculations with explicit inclusion of tensor terms.

doi: 10.1103/PhysRevC.84.014616
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2011ZE01      Phys.Rev. C 83, 034909 (2011)

C.Zeitlin, J.Miller, S.Guetersloh, L.Heilbronn, A.Fukumura, Y.Iwata, T.Murakami, S.Blattnig, R.Norman, S.Mashnik

Fragmentation of 14N, 16O, 20Ne, and 24Mg nuclei at 290 to 1000 MeV/nucleon

NUCLEAR REACTIONS H, C, Al, Cu, Sn, Pb(14N, X), (16O, X), (20Ne, X), (24Mg, X); E=290-1000 MeV/nucleon; measured particle spectra, cross sections, large and small acceptance angles. Comparison with NUCFRG2 and PHITS predictions.

doi: 10.1103/PhysRevC.83.034909
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2010IW01      Phys.Rev.Lett. 104, 252501 (2010)

Y.Iwata, T.Otsuka, J.A.Maruhn, N.Itagaki

Suppression of Charge Equilibration Leading to the Synthesis of Exotic Nuclei

NUCLEAR REACTIONS 208Pb(238U, X), (132Xe, X), (132Sn, X), (40Ca, X), (24Mg, X), (24O, X), (16O, X), (α, X), 24Mg(24O, X), E=2, 3, 4, 4.5, 5, 6, 7, 8 MeV/nucleon; calculated mass and N/Z yields, time evolution of charge distribution, charge equilibration. Skyrme time-dependent Hartee-Fock (TDHF) theory.

doi: 10.1103/PhysRevLett.104.252501
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2010IW02      Nucl.Phys. A836, 108 (2010)

Y.Iwata, T.Otsuka, J.A.Maruhn, N.Itagaki

Geometric classification of nucleon transfer at moderate low-energies

doi: 10.1016/j.nuclphysa.2010.01.242
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2009IW06      Eur.Phys.J. A 42, 613 (2009); Erratum Eur.Phys.J. A 42, 625 (2009)

Y.Iwata, T.Otsuka, J.A.Maruhn, N.Itagaki

Synthesis of exotic nuclei in heavy-ion collisions at higher energies

NUCLEAR REACTIONS 208Pb(α, X), (16O, X), (24O, X), (24Mg, X), (40Ca, X), (132Sn, X), (132Xe, X), (238U, X), E(cm)=5, 8 MeV/nucleon; calculated Q-values, N/Z yields, time evolution of dipole moment, reaction mechanism features, charge equilibration. Three-dimensional time-dependent Hartee-Fock method.

doi: 10.1140/epja/i2009-10851-1
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2008IW06      Int.J.Mod.Phys. E17, 1660 (2008)

Y.Iwata, N.Itagaki, J.A.Maruhn, T.Otsuka

The competitive reaction mechanism in exotic nuclear reactions

doi: 10.1142/S0218301308010672
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2008ZE02      Phys.Rev. C 77, 034605 (2008)

C.Zeitlin, S.Guetersloh, L.Heilbronn, J.Miller, A.Fukumura, Y.Iwata, T.Murakami, L.Sihver, D.Mancusi

Fragmentation cross sections of medium-energy 35Cl, 40Ar, and 48Ti beams on elemental targets

NUCLEAR REACTIONS H, C, Al, Cu, Sn, Pb(35Cl, X), E=290, 400, 650 MeV/nucleon; H, C, Al, Cu, Sn, Pb(40Ar, X), E=650, 1000 MeV/nucleon; H, C, Al, Cu, Sn, Pb(48Ti, X), E=1000 MeV/nucleon; measured charge changing cross sections, fragment production cross sections.

doi: 10.1103/PhysRevC.77.034605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1609.


2007HE22      Nucl.Sci.Eng. 157, 142 (2007)

L.Heilbronn, C.J.Zeitlin, Y.Iwata, T.Murakami, H.Iwase, T.Nakamura, T.Nunomiya, H.Sato, H.Yashima, R.M.Ronningen, K.Ieki

Secondary Neutron-Production Cross Sections from Heavy-Ian Interactions Between 230 and 600 MeV/Nucleon

NUCLEAR REACTIONS Al, Cu(α, nX), E=230 MeV/nucleon; C, Cu(N, nX), E=400 MeV/nucleon; C, Cu, Pb(Si, nX), E=600 MeV/nucleon; H, Li, C, Al(Fe, nX), E=500 MeV/nucleon; H, Li, C, Al, Cu, Pb(Kr, nX), E=400 MeV/nucleon; H, Li, C, Al, Cu, Pb(Xe, nX), E=400 MeV/nucleon; measured secondary neutron production cross sections and angular distributions.

doi: 10.13182/NSE07-A2719
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2050.


2007LA29      Nucl.Phys. A791, 434 (2007)

C.La Tessa, L.Sihver, C.Zeitlin, J.Miller, S.Guetersloh, L.Heilbronn, D.Mancusi, Y.Iwata, T.Murakami

Test of weak and strong factorization in nucleus-nucleus collisions at several hundred MeV/nucleon

NUCLEAR REACTIONS H, C, Al, Cu, Sn, Pb(40Ar, X), E=400 MeV/nucleon; C, Al, Cu, Sn, Pb(12C, X), (20Ne, X), (28Si, X), E=290, 400 MeV/nucleon; measured partial and total charge changing cross sections. Deduced factorization parameters.

doi: 10.1016/j.nuclphysa.2007.04.016
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2056.


2007MA01      Nucl.Instrum.Methods Phys.Res. B254, 30 (2007)

D.Mancusi, L.Sihver, K.Gustafsson, C.La Tessa, S.B.Guetersloh, C.J.Zeitlin, J.Miller, L.H.Heilbronn, K.Niita, T.Sato, H.Nakashima, T.Murakami, Y.Iwata

PHITS - benchmark of partial charge-changing cross sections for intermediate-mass systems

NUCLEAR REACTIONS H, C, Al, Cu, Sn, Pb(40Ar, X), E=400 MeV/nucleon; calculated partial charge-changing σ.

doi: 10.1016/j.nimb.2006.10.070
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2007WA34      Eur.Phys.J. A 33, 265 (2007)

T.Watanabe, J.K.Ahn, H.Akikawa, S.Aoki, K.Arai, S.Y.Bahk, K.M.Baik, B.Bassalleck, J.H.Chung, M.S.Chung, D.H.Davis, T.Fukuda, H.Hayata, K.Hoshino, A.Ichikawa, M.Ieiri, K.Imai, Y.H.Iwata, Y.S.Iwata, Y.Kakita, H.Kanda, M.Kaneko, T.Kawai, M.Kawasaki, C.O.Kim, J.Y.Kim, S.J.Kim, S.H.Kim, Y.Kondo, T.Kouketsu, Y.L.Lee, J.W.C.McNabb, M.Mitsuhara, Y.Nagase, C.Nagoshi, K.Nakazawa, H.Noumi, S.Ogawa, H.Okabe, K.Oyama, H.M.Park, I.G.Park, J.Parker, Y.S.Ra, J.T.Rhee, A.Rusek, H.Shibuya, K.S.Sim, P.K.Saha, D.Seki, M.Sekimoto, J.S.Song, H.Takahashi, T.Takahashi, F.Takeutchi, H.Tanaka, K.Tanida, J.Tojo, H.Torii, S.Torikai, T.Tsunemi, D.N.Tovee, N.Ushida, K.Yamamoto, N.Yasuda, J.T.Yang, C.J.Yoon, C.S.Yoon, M.Yosoi, T.Yoshida, L.Zhu

First observation of the ΣN decay of the S = - 2 system

doi: 10.1140/epja/i2007-10465-7
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2007ZE01      Nucl.Phys. A784, 341 (2007)

C.Zeitlin, A.Fukumura, S.B.Guetersloh, L.H.Heilbronn, Y.Iwata, J.Miller, T.Murakami

Fragmentation cross sections of 28Si at beam energies from 290 A to 1200 A Mev

NUCLEAR REACTIONS H, C, Al, Cu, Sn, Pb(28Si, X), E=290-1200 MeV/nucleon; measured fragmentation σ. Comparison with model predictions.

doi: 10.1016/j.nuclphysa.2006.10.088
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2010.


2007ZE02      Phys.Rev. C 76, 014911 (2007)

C.Zeitlin, S.Guetersloh, L.Heilbronn, J.Miller, A.Fukumura, Y.Iwata, T.Murakami

Fragmentation cross sections of 290 and 400 MeV/nucleon 12C beams on elemental targets

NUCLEAR REACTIONS C, Al, Cu, Sn, Pb(12C, X), E=290, 400 MeV/nucleon; measured fragment production cross sections and angular distributions. Compared results to model calculations.

doi: 10.1103/PhysRevC.76.014911
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1581.


2006HE07      Phys.Rev. C 73, 024603 (2006)

L.Heilbronn, Y.Iwata, H.Iwase, T.Murakami, H.Sato, T.Nakamura, R.M.Ronningen, K.Ieki, I.Gudowska, N.Sobolevsky

Secondary neutron-production cross sections from heavy-ion interactions in composite targets

NUCLEAR REACTIONS O, Mg, Si, Ca, Fe(C, X), E=290 MeV/nucleon; O, Mg, Si, Ca, Fe(Ne, X), E=600 MeV/nucleon; measured neutron spectra, σ(E, θ). Comparison with model predictions.

doi: 10.1103/PhysRevC.73.024603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1978.


2006WA05      J.Phys.(London) G32, 283 (2006)

S.-Y.Wang, T.Komatsubara, Y.-J.Ma, K.Furuno, Y.-H.Zhang, Y.Z.Liu, T.Hayakawa, J.Mukai, Y.Iwata, T.Morikawa, G.B.Hagemann, G.Sletten, J.Nyberg, D.Jerrestam, H.J.Jensen, J.Espino, J.Gascon, N.Gjorup, B.Cederwall, P.O.Tjom

Band structures in 123I

NUCLEAR REACTIONS 116Cd(14N, 3nα), E=65 MeV; measured Eγ, Iγ, γγ-coin. 123I deduced high-spin levels, J, π, configurations, B(M1)/B(E2). Nordball array.

doi: 10.1088/0954-3899/32/3/004
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Data from this article have been entered in the XUNDL database. For more information, click here.


2004SA32      Nucl.Phys. A738, 337 (2004)

A.Saito, S.Shimoura, S.Takeuchi, T.Motobayashi, T.Minemura, Y.U.Matsuyama, H.Baba, H.Akiyoshi, Y.Ando, N.Aoi, Zs.Fulop, T.Gomi, Y.Higurashi, M.Hirai, K.Ieki, N.Imai, N.Iwasa, H.Iwasaki, Y.Iwata, S.Kanno, H.Kobayashi, S.Kubono, M.Kunibu, M.Kurokawa, Z.Liu, S.Michimasa, T.Nakamura, S.Ozawa, H.Sakurai, M.Serata, E.Takeshita, T.Teranishi, K.Ue, K.Yamada, Y.Yanagisawa, M.Ishihara

Molecular states in neutron-rich beryllium isotopes

NUCLEAR REACTIONS 4He(12Be, 26He), (12Be, α8He), E ≈ 60 MeV/nucleon; measured excitation energy spectra, σ(E, θ). 12Be deduced excited states J, π.

doi: 10.1016/j.nuclphysa.2004.04.057
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2004WA16      Chin.Phys.Lett. 21, 1024 (2004)

S.-Y.Wang, Y.-J.Ma, T.Komatsubara, Y.-Z.Liu, Y.-H.Zhang, K.Furuno, T.Hayakawa, J.Mukai, Y.Iwata, T.Morikawa, G.B.Hagemann, G.Sletten, J.Nyberg, D.Jerrestam, H.J.Jensen, J.Espino, J.Gascon, N.Gjorup, B.Cederwall, P.O.Tjom

Structure of the πg7/2[404]7/2+ Band in Odd Proton Nucleus 123I

NUCLEAR REACTIONS 116Cd(14N, 5n2p), E=65 MeV; measured Eγ, Iγ, γγ-coin. 123I deduced high-spin levels, J, π, configurations.

doi: 10.1088/0256-307X/21/6/012
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Data from this article have been entered in the XUNDL database. For more information, click here.


2004WA37      High Energy Phys. and Nucl.Phys. (China) 28, 491 (2004)

S.-Y.Wang, Y.-J.Ma, T.Komatsubara, Y.-Z.Liu, Y.-H.Zhang, G.-D.Liang, K.Furuno, T.Hayakawa, J.Mukai, Y.Iwata, T.Morikawa, G.B.Hagemann, G.Sletten, J.Nyberg, D.Jerrestam, H.J.Jensen, J.Espino, J.Gascon, N.Gjorup, B.Cederwall, P.O.Tjom

High-Spin Level Scheme of 126Cs


2004YA01      Phys.Lett. B 579, 265 (2004)

K.Yamada, T.Motobayashi, H.Akiyoshi, N.Aoi, Zs.Fulop, T.Gomi, Y.Higurashi, N.Imai, N.Iwasa, H.Iwasaki, Y.Iwata, H.Kobayashi, M.Kurokawa, Z.Liu, T.Minemura, S.Ozawa, H.Sakurai, M.Serata, S.Shimoura, S.Takeuchi, T.Teranishi, Y.Yanagisawa, K.Yoshida, M.Ishihara

E1 strength of the subthreshold 3/2+ state in 15O studied by Coulomb excitation

NUCLEAR REACTIONS 208Pb(15O, 15O'), E=85 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 15O level deduced radiative width. Astrophysical implications discussed.

doi: 10.1016/j.physletb.2003.11.024
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2003HO22      Nucl.Phys. A719, 9c (2003)

A.Horvath, A.Galonsky, N.Carlin, F.Deak, T.Gomi, V.Guimaraes, Y.Higurashi, K.Hiroshi, K.Ieki, Y.Iwata, A.Kiss, J.Kolata, T.Rauscher, H.Schelin, J.von Schwarzenberg, Z.Seres, S.Takeuchi, S.Typel, R.Warner, J.Weiner

Measurements of astrophysical neutron capture cross sections via the inverse reaction

NUCLEAR REACTIONS C, Al, Cu, Sn, Pb(15C, nX), E=35 MeV/nucleon; C, Al, Cu, Sn, Pb(9Li, nX), E=40 MeV/nucleon; measured neutron spectra, (fragment)(neutron)-coin, dissociation yields. 8Li, 14C(n, γ), E=low; deduced astrophysical reaction rates.

doi: 10.1016/S0375-9474(03)00951-5
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2003KO07      Phys.Rev. C 67, 015806 (2003)

H.Kobayashi, K.Ieki, A.Horvath, A.Galonsky, N.Carlin, F.Deak, T.Gomi, V.Guimaraes, Y.Higurashi, Y.Iwata, A.Kiss, J.J.Kolata, T.Rauscher, H.Schelin, Z.Seres, R.Warner

Astrophysical reaction rate for the 8Li(n, γ)9Li reaction

NUCLEAR REACTIONS Pb(9Li, n8Li), E=39.7 MeV/nucleon; measured neutron and lithium spectra. 8Li(n, γ), E not given; deduced σ, astrophysical reaction rate upper limits. Comparison with previous results.

doi: 10.1103/PhysRevC.67.015806
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2003TA31      Nucl.Phys. A721, 951c (2003)

H.Takahashi, J.K.Ahn, H.Akikawa, S.Aoki, K.Arai, S.Y.Bahk, K.M.Baik, B.Bassalleck, J.H.Chung, M.S.Chung, D.H.Davis, T.Fukuda, K.Hoshino, A.Ichikawa, M.Ieiri, K.Imai, Y.H.Iwata, Y.S.Iwata, H.Kanda, M.Kaneko, T.Kawai, M.Kawasaki, C.O.Kim, J.Y.Kim, S.J.Kim, S.H.Kim, Y.Kondo, T.Kouketsu, K.N.Kyaw, Y.L.Lee, J.W.C.McNabb, M.Mitsuhara, Y.Nagase, C.Nagoshi, K.Nakazawa, H.Noumi, S.Ogawa, H.Okabe, M.Okuda, K.Oyama, B.D.Park, H.M.Park, I.G.Park, J.Parker, Y.S.Ra, J.T.Rhee, A.Rusek, H.Shibuya, K.S.Sim, P.K.Saha, D.Seki, M.Sekimoto, J.S.Song, T.Takahashi, F.Takeutchi, H.Tanaka, K.Tanida, J.Tojo, H.Torii, S.Torikai, D.N.Tovee, N.Ushida, T.Wint, K.Yamamoto, N.Yasuda, J.T.Yang, C.J.Yoon, C.S.Yoon, M.Yosoi, T.Yoshida, L.Zhu

Observation of Double-hypernuclei and Λ-Λ Interaction

NUCLEAR STRUCTURE 6He, 10Be, 13B; analyzed 2Λ hypernucleus decay data.

doi: 10.1016/S0375-9474(03)01249-1
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2002SA65      Prog.Theor.Phys.(Kyoto), Suppl. 146, 615 (2002)

A.Saito, S.Shimoura, S.Takeuchi, T.Motobayashi, H.Akiyoshi, Y.Ando, N.Aoi, Z.Fulop, T.Gomi, Y.Higurashi, M.Hirai, N.Iwasa, H.Iwasaki, Y.Iwata, H.Kobayashi, M.Kurokawa, Z.Liu, T.Minemura, S.Ozawa, H.Sakurai, M.Serata, T.Teranishi, K.Yamada, Y.Yanagisawa, M.Ishihara

Molecular States in Neutron-Rich Beryllium Isotopes

NUCLEAR REACTIONS 12C(14Be, X)12Be/14Be, E=75 MeV/nucleon; measured particle spectra, angular correlations following residual nucleus breakup. 12,14Be deduced excited states, cluster structure.

doi: 10.1143/PTPS.146.615
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2002WA04      Phys.Rev. C65, 034306 (2002)

J.Wang, A.Galonsky, J.J.Kruse, E.Tryggestad, R.H.White-Stevens, P.D.Zecher, Y.Iwata, K.Ieki, A.Horvath, F.Deak, A.Kiss, Z.Seres, J.J.Kolata, J.von Schwarzenberg, R.E.Warner, H.Schelin

Dissociation of 6He

NUCLEAR REACTIONS C, Al, Cu, Sn, Pb, U(6He, 2nα), (6He, αX), E=23.9 MeV/nucleon; measured Eα, En, nα-coin, parallel momentum distributions, angular correlations, two-neutron removal σ; deduced Coulomb contribution, other reaction mechanism features. 6He deduced halo neutron correlations. Comparisons with model predictions.

doi: 10.1103/PhysRevC.65.034306
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2001IC01      Phys.Lett. 500B, 37 (2001)

A.Ichikawa, J.K.Ahn, H.Akikawa, S.Aoki, K.Arai, S.Y.Bahk, K.M.Baik, B.Bassalleck, J.H.Chung, M.S.Chung, K.Hoshino, M.Ieiri, K.Imai, Y.H.Iwata, Y.S.Iwata, H.Kanda, M.Kaneko, T.Kawai, C.O.Kim, J.Y.Kim, S.J.Kim, S.H.Kim, Y.Kondo, T.Kouketsu, Y.L.Lee, J.W.C.McNabb, M.Mitsuhara, Y.Nagase, C.Nagoshi, K.Nakazawa, H.Noumi, S.Ogawa, H.Okabe, K.Oyama, H.M.Park, I.G.Park, J.Parker, Y.S.Ra, J.T.Rhee, A.Rusek, H.Shibuya, K.S.Sim, P.K.Saha, D.Seki, M.Sekimoto, J.S.Song, H.Takahashi, T.Takahashi, F.Takeutchi, H.Tanaka, K.Tanida, J.Tojo, H.Torii, S.Torikai, N.Ushida, K.Yamamoto, N.Yasuda, J.T.Yang, C.J.Yoon, C.S.Yoon, M.Yosoi, T.Yoshida, L.Zhu

Production of Twin Λ-Hypernuclei from Ξ- Hyperon Capture at Rest

NUCLEAR REACTIONS 14N(Ξ-, X), E at rest; measured particle tracks following hypernucleus decay; deduced double, twin Λ-hypernucleus production rates. Emulsion target.

doi: 10.1016/S0370-2693(01)00049-1
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2001IC03      Nucl.Phys. A691, 246c (2001)

A.Ichikawa, J.K.Ahn, H.Akikawa, S.Aoki, K.Arai, S.Y.Bahk, K.M.Baik, B.Bassalleck, J.H.Chung, M.S.Chung, K.Hoshino, M.Ieiri, K.Imai, Y.H.Iwata, H.Kanda, M.Kaneko, T.Kawai, C.O.Kim, J.Y.Kim, S.J.Kim, S.H.Kim, Y.Kondo, T.Kouketsu, Y.L.Lee, J.W.C.McNabb, M.Mitsuhara, Y.Nagase, C.Nagoshi, K.Nakazawa, H.Noumi, S.Ogawa, H.Okabe, K.Oyama, H.M.Park, I.G.Park, J.Parker, Y.S.Ra, J.T.Rhee, A.Rusek, H.Shibuya, K.S.Sim, P.K.Saha, D.Seki, M.Sekimoto, J.S.Song, H.Takahashi, T.Takahashi, F.Takeutchi, H.Tanaka, K.Tanida, J.Tojo, H.Torii, S.Torikai, N.Ushida, K.Yamamoto, N.Yasuda, J.T.Yang, C.J.Yoon, C.S.Yoon, M.Yosoi, T.Yoshida, L.Zhu

Study of Double-Strangeness Nuclei with Hybrid-Emulsion Method (KEK-PS E373)

NUCLEAR REACTIONS 14N(Ξ-, X), E at rest; measured particle tracks following hypernucleus decay; deduced twin-hypernucleus event. Hybrid emulsion experiment.

doi: 10.1016/S0375-9474(01)01038-7
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2001IW05      Phys.Rev. C64, 054609 (2001)

Y.Iwata, T.Murakami, H.Sato, H.Iwase, T.Nakamura, T.Kurosawa, L.Heilbronn, R.M.Ronningen, K.Ieki, Y.Tozawa, K.Niita

Double-Differential Cross Sections for the Neutron Production from Heavy-Ion Reactions at Energies E/A = 290-600 MeV

NUCLEAR REACTIONS C, Cu, Pb(C, nX), (Ne, nX), (Ar, nX), E=290-600 MeV/nucleon; measured neutron spectra, σ(En, θ), integrated σ; deduced equilibrium and pre-equilibrium components, related reaction mechanism features. Comparison with moving-source model predictions.

doi: 10.1103/PhysRevC.64.054609
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2001TA23      Phys.Lett. 515B, 255 (2001)

S.Takeuchi, S.Shimoura, T.Motobayashi, H.Akiyoshi, Y.Ando, N.Aoi, Zs.Fulop, T.Gomi, Y.Higurashi, M.Hirai, N.Iwasa, H.Iwasaki, Y.Iwata, H.Kobayashi, M.Kurokawa, Z.Liu, T.Minemura, S.Ozawa, H.Sakurai, M.Serata, T.Teranishi, K.Yamada, Y.Yanagisawa, M.Ishihara

Isobaric Analog State of 14Be

NUCLEAR REACTIONS 1H(14Be, 14B), E=74 MeV/nucleon; measured particle spectra, σ(θ) following fragment decay. 14Be deduced IAS energy, width, Coulomb displacement energy, neutron halo features.

doi: 10.1016/S0370-2693(01)00890-5
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2001TA34      Phys.Rev.Lett. 87, 212502 (2001)

H.Takahashi, J.K.Ahn, H.Akikawa, S.Aoki, K.Arai, S.Y.Bahk, K.M.Baik, B.Bassalleck, J.H.Chung, M.S.Chung, D.H.Davis, T.Fukuda, K.Hoshino, A.Ichikawa, M.Ieiri, K.Imai, Y.H.Iwata, Y.S.Iwata, H.Kanda, M.Kaneko, T.Kawai, M.Kawasaki, C.O.Kim, J.Y.Kim, S.J.Kim, S.H.Kim, Y.Kondo, T.Kouketsu, Y.L.Lee, J.W.C.McNabb, M.Mitsuhara, Y.Nagase, C.Nagoshi, K.Nakazawa, H.Noumi, S.Ogawa, H.Okabe, K.Oyama, H.M.Park, I.G.Park, J.Parker, Y.S.Ra, J.T.Rhee, A.Rusek, H.Shibuya, K.S.Sim, P.K.Saha, D.Seki, M.Sekimoto, J.S.Song, T.Takahashi, F.Takeutchi, H.Tanaka, K.Tanida, J.Tojo, H.Torii, S.Torikai, D.N.Tovee, N.Ushida, K.Yamamoto, N.Yasuda, J.T.Yang, C.J.Yoon, C.S.Yoon, M.Yosoi, T.Yoshida, L.Zhu

Observation of a ΛΛ6He Double Hypernucleus

NUCLEAR REACTIONS 12C, 14N, 16O(K-, K+)6He, E at 1.66 GeV/c; measured fragment tracks following hypernucleus decay; deduced double-Λ hypernucleus formation, Λ-Λ interaction energy. Hybrid-emulsion experiment.

doi: 10.1103/PhysRevLett.87.212502
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2001ZE05      Phys.Rev. C64, 024902 (2001)

C.Zeitlin, A.Fukumura, L.Heilbronn, Y.Iwata, J.Miller, T.Murakami

Fragmentation Cross Sections of 600 MeV/Nucleon 20Ne on Elemental Targets

NUCLEAR REACTIONS H, C, 27Al, Cu, Sn, Ta, Pb(20Ne, X), E=600 MeV/nucleon; charge-changing and fragment production σ, fragment charge distributions. Comparisons with model predictions.

doi: 10.1103/PhysRevC.64.024902
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2000IW05      Phys.Rev. C62, 064311 (2000)

Y.Iwata, K.Ieki, A.Galonsky, J.J.Kruse, J.Wang, R.H.White-Stevens, E.Tryggestad, P.D.Zecher, F.Deak, A.Horvath, A.Kiss, Z.Seres, J.J.Kolata, J.von Schwarzenberg, R.E.Warner, H.Schelin

Dissociation of 8He

NUCLEAR REACTIONS Al(8He, n6He), Sn, Pb(8He, 2n6He), E=24 MeV/nucleon; measured invariant mass spectra, relative momentum distributions; deduced sequential decay contribution, dipole strength function, sum rules. 8He deduced excited state J, π, Γ. Secondary beam from 16O fragmentation.

doi: 10.1103/PhysRevC.62.064311
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1999UT03      Nucl.Phys. (Supplement) A654, 928c (1999)

H.Utsunomiya, Y.Tokimoto, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt, S.Typel, G.Baur

Excitation of Continuum States in 7Li and Their Decay by Quantum Tunneling

NUCLEAR REACTIONS 27Al, 58Ni, 64Zn, 90Zr, 120Sn, 144Sm, 197Au(7Li, tα), E=42 MeV; measured particle spectra, forward-backward asymmetry; deduced E1, E2, higher-order effects in Coulomb breakup.

doi: 10.1016/S0375-9474(00)88575-9
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1998GA33      Phys.Rev. C58, 2161 (1998)

S.J.Gaff, A.Galonsky, C.K.Gelbke, T.Glasmacher, M.Huang, J.J.Kruse, G.J.Kunde, R.Lemmon, W.G.Lynch, M.B.Tsang, J.Wang, P.D.Zecher, F.Deak, A.Horvath, A.Kiss, Z.Seres, K.Ieki, Y.Iwata

Time Scales from Two-Neutron Intensity Interferometry for the Reaction 40Ar + 165Ho at E/A = 25 MeV

NUCLEAR REACTIONS 165Ho(40Ar, X), E=25 MeV/nucleon; measured neutron spectra, coincidence neutron yields; deduced correlation function, source radius, lifetime. Two-neutron intensity interferometry.

doi: 10.1103/PhysRevC.58.2161
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1998UT01      Phys.Lett. 416B, 43 (1998)

H.Utsunomiya, Y.Tokimoto, H.Mabuchi, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Strongly-Suppressed Post-Coulomb Acceleration in Non-Resonant Breakup of 7Li

NUCLEAR REACTIONS 27Al, 58Ni, 90Zr, 120Sn, 144Sm, 197Au(7Li, tα), E=42 MeV; measured tα-coin, σ(θ, Et, Eα); deduced no evidence for fragment post-acceleration. Non-resonant breakup, Coulomb dissociation, astrophysical implications.

doi: 10.1016/S0370-2693(97)01328-2
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1998UT03      Nucl.Instrum.Methods Phys.Res. A402, 417 (1998)

H.Utsunomiya, Y.Tokimoto, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Method of Coulomb Breakup Probing Primordial 7Li Synthesis

NUCLEAR REACTIONS 90Zr(7Li, tα), E=42 MeV; measured t-, α-spectra, tα-coin; deduced astrophysical S-factors. Comparison with direct capture data.

doi: 10.1016/S0168-9002(97)00883-8
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1998UT04      J.Phys.(London) G24, 1637 (1998)

H.Utsunomiya, Y.Tokimoto, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Astrophysical Implications of Non-Resonant Break-Up of 7Li

NUCLEAR REACTIONS 90Zr, 197Au(7Li, tα), E not given; analyzed nonresonant breakup data; deduced role of post-Coulomb acceleration.

doi: 10.1088/0954-3899/24/8/044
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1998ZE01      Phys.Rev. C57, 959 (1998)

P.D.Zecher, A.Galonsky, S.J.Gaff, J.J.Kruse, G.Kunde, E.Tryggestad, J.Wang, R.E.Warner, D.J.Morrissey, K.Ieki, Y.Iwata, F.Deak, A.Horvath, A.Kiss, Z.Seres, J.J.Kolata, J.von Schwarzenberg, H.Schelin

Measurement of the 8Li(n, γ)9Li Cross Section at Astrophysical Energies by Reverse Kinematics

NUCLEAR REACTIONS U, Pb(9Li, n8Li), E=30 MeV/nucleon; measured σ. 8Li(n, γ), E=0.25, 0.75 MeV; deduced σ upper limit. Astrophysical implications discussed. Radioactive beam.

doi: 10.1103/PhysRevC.57.959
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1996AN28      Nucl.Instrum.Methods Phys.Res. A383, 13 (1996)

J.Antos, H.-Y.Chao, P.Chang, M.-T.Cheng, M.-L.Chu, R.-S.Guo, C.-L.Ho, P.-K.Teng, M.-J.Wang, S.-C.Wu, G.-P.Yeh, P.Yeh, J.Andressen, E.Barsotti, M.Bowden, S.Cihangir, H.Gonzalez, C.Grimm, B.Haynes, M.Hrycyk, J.Howell, D.Husby, W.Knopf, M.Lindenmeyer, P.Ratzmann, J.Sarge, J.Spalding, L.Spiegel, S.Tkaczyk, K.Woodbury, R.Yarema, S.Zimmerman, T.Zimmerman, C.Gay, J.Huth, J.Oliver, M.Spiropulu, R.Stroehmer, Y.Iwata, T.Ohmoto, T.Ohsugi, B.Barnett, J.Skarha, R.Snider, R.Takashima, R.Ely, M.Garcia-Sciveres, C.Haber, O.Milgrome, L.Lu, M.Bailey, N.Bruner, M.Gold, M.Hoeferkamp, J.Matthews, E.Moore, S.Seidel, T.Thomas, S.Worm, L.Yu, T.Kohriki, Y.Unno, N.Tamura, N.Bacchetta, D.Bisello, G.Bolla, J.Boudreau, E.Engels, Jr., B.T.Huffman, P.F.Shepard, R.Rosatti, F.Bedeschi, A.Menzione, G.Punzi, L.Ristori, F.Zetti, D.Bortoletto, A.Garfinkel, A.Hardmann, K.Hoffman, T.Keaffaber, N.M.Shaw, J.Cassada, P.Tipton, J.Conway, J.Done, T.Kamon, B.Tannenbaum, J.Wolinski, D.Benjamin, M.Frautschi, A.Sill, J.F.Hou

The SVX II Silicon Vertex Detector Upgrade at CDF

doi: 10.1016/S0168-9002(96)00688-2
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1996GA08      Nucl.Phys. A599, 353c (1996)

A.Galonsky, J.J.Kruse, W.G.Lynch, D.J.Morrissey, N.Orr, J.Ottarson, D.Sackett, B.M.Sherrill, J.Wang, J.Winger, P.Zecher, K.Ieki, Y.Iwata, F.Deak, A.Horvath, A.Kiss, Z.Seres, J.J.Kolata, R.E.Warner, H.Schelin, D.L.Humphrey

Soft Dipole Resonance in Exotic Nuclei ( Question )

NUCLEAR REACTIONS Pb(11Li, X), E=30 MeV/nucleon; measured projectile three-body breakup energy spectrum, three-particle momenta; deduced no soft dipole resonance. 11Li deduced no dineutron. Virtual photon induced photodisintegration of 11Li.

doi: 10.1016/0375-9474(96)00078-4
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1996SA53      Nucl.Instrum.Methods Phys.Res. A383, 245 (1996)

H.F.-W.Sadrozinski, J.DeWitt, D.E.Dorfan, T.Dubbs, A.A.Grillo, S.Kashigin, W.Kroeger, J.Rahn, W.A.Rowe, A.Seiden, E.Spencer, A.Webster, R.Wichmann, M.Wilder, D.Williams, J.Dane, A.Lankford, S.Pier, B.Schmid, R.Bonino, C.Couyoumtzelis, P.Demierre, Y.Iwata, T.Ohsugi, H.Iwasaki, T.Kondo, S.Terada, Y.Unno, W.Dabrowski, M.Idzik, J.Godlewski, R.Takashima, A.Ciocio, T.Collins, C.Haber, I.Kipnis, M.Shapiro, J.Siegrist, H.Spieler, N.Tamura, A.Grewal, R.Nickerson, R.Wastie, Y.Gao, R.Gonzalez, A.M.Walsh, Z.Feng

Monitoring the Performance of Silicon Detectors with Binary Readout in the ATLAS Beam Test

doi: 10.1016/S0168-9002(96)00751-6
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1996TE11      Nucl.Instrum.Methods Phys.Res. A383, 159 (1996)

S.Terada, H.Iwasaki, T.Kohriki, T.Kondo, M.Numajiri, Y.Unno, T.Handa, Y.Iwata, T.Ohsugi, N.Tamura, R.Takashima

Proton Irradiation on p-Bulk Silicon Strip Detectors using 12 GeV PS at KEK

doi: 10.1016/S0168-9002(96)00748-6
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1996UN02      Nucl.Instrum.Methods Phys.Res. A383, 211 (1996)

Y.Unno, M.Takahata, H.Maeohmichi, F.Hinode, T.Akagi, T.Aso, M.Daigo, J.DeWitt, D.Dorfan, T.Dubbs, M.Frautschi, A.Grillo, C.Haber, T.Handa, T.Hatakenaka, B.Hubbard, H.Iwasaki, Y.Iwata, D.Kaplan, S.Kashigin, I.Kipnis, S.Kobayashi, T.Kohriki, T.Kondo, W.Kroeger, J.Matthews, H.Miyata, A.Murakami, K.Noble, K.O'Shaughnessy, T.Ohmoto, T.Ohsugi, H.Ohyama, T.Pulliam, J.Rahn, W.A.Rowe, H.F.-W.Sadrozinski, A.Seiden, J.Siegrist, E.Spencer, H.Spieler, R.Takashima, N.Tamura, S.Terada, M.Tezuka, A.Webster, R.Wichmann, M.Wilder, M.Yoshikawa

Beam Tests of a Double-Sided Silicon Strip Detector with Fast Binary Readout Electronics Before and After Proton-Irradiation

doi: 10.1016/S0168-9002(96)00670-5
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1993KO25      Nucl.Phys. A557, 419c (1993)

T.Komatsubara, K.Furuno, T.Hosoda, J.Mukai, T.Hayakawa, T.Morikawa, Y.Iwata, N.Kato, J.Espino, J.Gascon, N.Gjorup, G.B.Hagemann, H.J.Jensen, D.Jerrestam, J.Nyberg, G.Sletten, B.Cederwall, P.O.Tjom

High-Spin States in Odd-Odd Nuclei

NUCLEAR REACTIONS 115In(13C, 4n), E=66 MeV; 116Cd(14N, 4n), E=65 MeV; 92Mo(35Cl, n2p), E=150 MeV; measured γγ-coin, DSA. 124,126Cs, 124La deduced levels, J, π, band structure.

NUCLEAR STRUCTURE 158Tm, 120,122,124,126,128Cs, 124,126,128,130,132La; analyzed level data; deduced signature inversion features.

doi: 10.1016/0375-9474(93)90559-G
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1993MO26      Nucl.Instrum.Methods Phys.Res. A335, 453 (1993)

T.Morikawa, H.Inoue, Y.Iwata, T.Matsuoka, H.Otsuka, N.Kato, S.Mitarai, Y.Yoshizawa

Charged Particle Detector System for Coulomb Excitation Experiment with NORDBALL

NUCLEAR REACTIONS 154Sm(58Ni, 58Ni'), E=220 MeV; measured Eγ, Iγ, γγ-, pγγ-coin following Coulomb excitation. 154Sm(32S, 32S'), E not given; measured not given. 154Sm levels deduced Coulomb excitation probability vs θ. Charged particle plus multi-γ-ray detector systems.

doi: 10.1016/0168-9002(93)91230-K
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1993OG01      Nucl.Phys. A559, 100 (1993)

S.Ogaza, J.Kownacki, M.P.Carpenter, J.Gascon, G.B.Hagemann, Y.Iwata, H.J.Jensen, T.Komatsubara, J.Nyberg, G.Sletten, P.O.Tjom, W.Walus, I.Hamamoto

Shapes, Electromagnetic Properties and Enhanced E1 Strength in 169Lu

NUCLEAR REACTIONS 154Sm(19F, 4n), E=85 MeV; measured Eγ, γγ-coin, Iγ, DSA. 169Lu deduced levels, Iγ, rotational band-structure, configuration-dependent shape, pairing, T1/2, transition quadrupole moments, B(M1)/B(E2), B(E1). Comparison to particle-rotor calculations including octupole softness. Enriched target, array of Compton suppressed Ge-detectors.

doi: 10.1016/0375-9474(93)90182-W
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1992MO20      Z.Phys. A343, 373 (1992)

T.Morikawa, H.Inoue, Y.Iwata, T.Matsuoka, Y.Yoshizawa, T.Kato, S.Mitarai, J.Mukai, D.Jerrestam

Coulomb Excitation of 154Sm

NUCLEAR REACTIONS 154Sm(58Ni, 58Ni'), E=220 MeV; measured γγ-, (particle)γ-, (particle)γγ-coin, Iγ(θ) following Coulomb excitation. 154Sm deduced levels, J, π, band structure, new band excitation probability.

doi: 10.1007/BF01291541
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1991IW05      Nucl.Instrum.Methods Phys.Res. B56/57, 469 (1991)

Y.Iwata

Angular Dependence of the Doppler Broadening in the Resonance of the 1H(15N, αγ)12C Reaction

NUCLEAR REACTIONS, ICPND 1H(15N, αγ), E ≈ resonance; measured γ-yield; deduced Doppler broadening angular dependence. Proposed possible model.

doi: 10.1016/0168-583X(91)96072-S
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1990AT01      Phys.Lett. 252B, 545 (1990)

A.Atac, J.J.Gaardhoje, B.Herskind, Y.Iwata, S.Ogaza, A.Bracco, A.M.Bruce, A.James, R.Chapman, F.Khazaie, J.C.Lisle, J.N.Mo, K.A.Connell, J.Simpson

GDR Decay in Hot Hg Isotopes. An Approach to Improve the Sensitivity to GDR Decay following Fusion Reactions

NUCLEAR REACTIONS 142Nd(48Ca, X), E=205 MeV; measured Eγ, Iγ, γ(recoil)-coin. 190Hg deduced GDR decay, parameters.

doi: 10.1016/0370-2693(90)90480-T
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1990GA15      Nucl.Phys. A513, 344 (1990)

J.Gascon, C.-H.Yu, G.B.Hagemann, M.C.Carpenter, J.M.Espino, Y.Iwata, T.Komatsubara, J.Nyberg, S.Ogaza, G.Sletten, P.O.Tjom, D.C.Radford, J.Simpson, A.Alderson, M.A.Bentley, P.Fallon, P.D.Forsyth, J.W.Roberts, J.F.Sharpey-Schafer

Configuration-Dependent Transition Rates in 157Ho

NUCLEAR REACTIONS 124Sn(37Cl, 4n), E=150 MeV; 142Ce(19F, 4n), E=85.5 MeV; measured Iγ, γγ-coin, DSA. 157Ho deduced levels, J, π, T1/2, transition quadrupole moments, nuclear deformation, B(M1). Enriched targets, array of Compton-suppressed Ge-detectors.

doi: 10.1016/0375-9474(90)90102-R
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1990GA20      Phys.Scr. T32, 47 (1990)

J.J.Gaardhoje, A.Atac, Y.Iwata

Finite Temperature Giant Resonances

NUCLEAR REACTIONS 142Nd(48Ca, X), E=205 MeV; analyzed data. 188Hg deduced GDR parameters.

NUCLEAR STRUCTURE A=110-112; analyzed γ-spectra; deduced collective GDR features. Sn isotope data.

doi: 10.1088/0031-8949/1990/T32/008
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1990KO01      Z.Phys. A335, 113 (1990)

T.Komatsubara, K.Furuno, T.Hosoda, J.Espino, J.Gascon, G.B.Hagemann, Y.Iwata, D.Jerrestam, N.Kato, T.Morikawa, J.Nyberg, G.Sletten, P.O.Tjom

High Spin Structure in the Odd-Odd Nucleus 124Cs

NUCLEAR REACTIONS 115In(13C, 4n), E=66 MeV; measured γγ-coin. 124Cs deduced levels, J, π, B(λ) ratios.


1986SH26      Phys.Rev. C34, 909 (1986)

N.Shinohara, S.Usuda, S.Ichikawa, T.Suzuki, M.Magara, H.Okashita, H.Yoshikawa, T.Horiguchi, Y.Iwata, S.Shibata, I.Fujiwara

Actinides Produced by 12C + 242Pu and 16O + 238U Reactions

NUCLEAR REACTIONS 238U(16O, X)244Cf/245Cf/246Cf/250Fm, E=85-125 MeV; 242Pu(12C, X)244Cf/245Cf/246Cf/250Fm, E=65-95 MeV; 238U(16O, 4n)250Fm, E=92 MeV; 242Pu(12C, 4n)250Fm, E=72 MeV;238U(16O, 4nα)246Cf, E=97 MeV; 238U(16O, 5nα)245Cf, E=105 MeV;242Pu(12C, 4nα)246Cf, E=83 MeV;242Pu(12C, 5nα)245Cf, E=90 MeV;238U(16O, X)242Cm, E=85-125 MeV;242Pu(12C, X)242Am/242Cm/243Cm/244Cm, E = 65-95 MeV; measured residual production σ(E). 254Fm; deduced Coulomb barrier role, α-cluster transfer mechanism. Radiochemical methods. Evaporation code analysis. Comparison with available data.

NUCLEAR REACTIONS 238U(16O, F)244Cf/245Cf/246Cf/250Fm/242Cm, E=85-145 MeV; 242Pu(12C, F)244Cf/245Cf/246Cf/250Fm/242Cm, E=60-120 MeV; calculated fission σ(E). ALICE nuclear mode code, comparison with experimental data.

doi: 10.1103/PhysRevC.34.909
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0357.


1984IS09      Ann.Rep.Res.Reactor Inst., Kyoto Univ. 17, 132 (1984)

T.Ishii, H.Yamamoto, M.Yoshida, K.Kawade, H.Miyade, Y.Iwata, T.Katoh, J.-Z.Ruan, Y.Funakoshi, Y.Kawase, K.Okano

Response Functions of an HPGe Detector to Electrons

RADIOACTIVITY 143La(β-) [from fission product 143Cs decay]; measured Q. Hyperpure Ge detector β-ray spectrometer.


1984IW02      Int.J.Appl.Radiat.Isotop. 35, 1 (1984)

Y.Iwata, Y.Yoshizawa, T.Suzuki, S.Ichikawa, S.Okazaki

Gamma-Ray Intensities of 239Pu

RADIOACTIVITY 239Pu(α); measured Eγ, Iγ. 235U levels deduced relative Iγ. High accuracy data, standard source detection efficiency calibration.

doi: 10.1016/0020-708X(84)90122-4
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1984IW03      Nucl.Instrum.Methods 219, 123 (1984)

Y.Iwata, M.Yasuhara, K.Maeda, Y.Yoshizawa

Precision Measurements of Gamma-Ray Intensities VI. 120Sb, 124Sb and 125Sb

RADIOACTIVITY 120Sb(EC) [from 120Sn(p, n)]; 124,125Sb(β-) [from neutron irradiation of Sb]; 152Eu(EC), (β+), (β-); 154Eu, 192Ir(EC), (β-); measured Eγ, Iγ, βγ-, (X-ray)γ-coin; deduced Iγ per decay. 192Os, 192Pt, 154,152Gd, 120Sn, 124,125Te levels deduced γ-branching.

doi: 10.1016/0167-5087(84)90143-1
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1984IW06      Int.J.Appl.Radiat.Isotop. 35, 907 (1984)

Y.Iwata, I.Yamamoto, Y.Yoshizawa

Half-Life of 113mIn

RADIOACTIVITY 113mIn [from 113Sn(EC-decay)]; measured T1/2. Ion-exchange parent-daughter separation, Ge(Li) detector, dead time correction, least squares fit.

doi: 10.1016/0020-708X(84)90030-9
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1983IW02      Int.J.Appl.Radiat.Isotop. 34, 1537 (1983)

Y.Iwata, M.Kawamoto, Y.Yoshizawa

Half-Life of 68Ga

RADIOACTIVITY 68Ga(β+), (EC); measured T1/2. Dead time, pile-up corrections, γ spectroscopic techniques.

doi: 10.1016/0020-708X(83)90289-2
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1983JI01      Nucl.Instrum.Methods 212, 259 (1983)

J.Jin, J.Takada, Y.Iwata, Y.Yoshizawa

Precision Measurements of Gamma-Ray Intensities V. 160Tb, 168Tm and 182Ta

RADIOACTIVITY 160Tb(β-); 168Tm(EC), (β-); 182Ta(β-); measured Eγ, Iγ; deduced Iγ per decay. 160Dy levels deduced relative Iγ. 168Er, 182W deduced levels, relative Iγ. High precision, calibrated Ge(Li) detector.

doi: 10.1016/0167-5087(83)90701-9
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1983YO03      Nucl.Instrum.Methods 212, 249 (1983)

Y.Yoshizawa, Y.Iwata, T.Katoh, J.-Z.Ruan, Y.Kawada

Precision Measurements of Gamma-Ray Intensities IV. Low Energy Region: 75Se and 133Ba

RADIOACTIVITY 75Se(EC); 133Ba(EC); measured Eγ, Iγ; deduced Iγ per decay. 75As, 133Cs levels deduced relative Iγ. High precision, standard source calibration.

doi: 10.1016/0167-5087(83)90700-7
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1980IW03      Nucl.Instrum.Methods 175, 525 (1980)

Y.Iwata, Y.Yoshizawa

Precision Measurements of Gamma-Ray Intensities. III. 52Mn, 90Nb, 198Au

RADIOACTIVITY 52Mn [from 52Cr(α, 3np), E=60 MeV], 90Nb [from Zr(p, n), E=17 MeV], 46Sc, 198Au; measured Eγ, Iγ. 52Mn, 90Nb, 198Au deduced levels, J, π, Iγ per decay. 46Sc deduced upper limit for Iγ. Ge(Li) detector.

doi: 10.1016/0029-554X(80)90768-5
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1980IW04      J.Phys.Soc.Jpn. 49, 2114 (1980)

Y.Iwata

Gamma-Ray Spectroscopy of 156Gd following the Decay of 156Eu and 156Tb

RADIOACTIVITY 156Eu [from 154Sm(n, γ)155Sm(β-decay) → 155Eu(n, γ)], 156Tb [from 156Gd(p, n)]; measured Eγ, Iγ. 156Gd deduced B(E2) ratios, rotational band mixing parameter. Enriched targets, Ge(Li) detector.

doi: 10.1143/JPSJ.49.2114
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1980YO05      Nucl.Instrum.Methods 174, 109 (1980)

Y.Yoshizawa, Y.Iwata, T.Kaku, T.Katoh, J.-Z.Ruan, T.Kojima, Y.Kawada

Precision Measurements of Gamma-Ray Intensities. I. 56Co, 88Y, 110mAg, 134Cs, 207Bi

RADIOACTIVITY 56Co, 88Y, 110mAg, 134Cs, 207Bi; measured Eγ, Iγ, βγ-, γ(X-ray)-coin; deduced relative Iγ per decay. Standard, cascade sources, Ge(Li) detector, high precision.

doi: 10.1016/0029-554X(80)90420-6
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1980YO06      Nucl.Instrum.Methods 174, 133 (1980)

Y.Yoshizawa, Y.Iwata, Y.Iinuma

Precision Measurements of Gamma-Ray Intensities. II. 152Eu, 154Eu and 192Ir

RADIOACTIVITY 152,154Eu, 192Ir; measured Eγ, Iγ; deduced relative Iγ. 192Ir deduced Iγ per decay. Ge(Li) detector, high precision.

doi: 10.1016/0029-554X(80)90421-8
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Note: The following list of authors and aliases matches the search parameter Y.Iwata: , Y.H.IWATA, Y.S.IWATA