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NSR database version of April 11, 2024.

Search: Author = M.Asai

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2022OR04      Phys.Rev. C 106, 064301 (2022)

R.Orlandi, H.Makii, K.Nishio, K.Hirose, M.Asai, K.Tsukada, T.K.Sato, Y.Ito, F.Suzaki, Y.Nagame, A.N.Andreyev, E.Ideguchi, N.Aoi, T.T.Pham, S.Q.Yan, Y.P.Shen, B.Gao, G.Li

New K isomers in 248Cf

NUCLEAR REACTIONS 249Cf(18O, 19O)248Cf, E=140.4 MeV; measured reaction products, Eγ, Iγ, γγ-coin, particleγ-coin. 248Cf; deduced levels, J, π, transitions from isomeric states, T1/2 for 2 low-ling transitions, B(E1). Discussed possible configuration of newly observed isomeric state at 950 keV to be two-quasineutron K=8- and the two-quasiproton K=5-. Comparison to other experimental data. Radioactive target. Si-detectors array combined with γ-ray detector array consisted of 4 Ge detectors and 4 4x5 inch LaBr3 scintillators at Tokai Tandem accelerator facility of the Japan Atomic Energy Agency (JAEA).

doi: 10.1103/PhysRevC.106.064301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020DU01      Phys.Rev. C 101, 014309 (2020)

E.Dupont, A.Astier, C.M.Petrache, B.F.Lv, I.Deloncle, J.Kiener, R.Orlandi, H.Makii, K.Nishio, K.Hirose, M.Asai, T.K.Sato, K.Tsukada, Y.Ito, K.R.Kean, R.Yanagihara, G.Scamps

New excited 2+ and 3- two-proton states in 21084Po126 populated by two-proton transfer

NUCLEAR REACTIONS 208Pb(12C, 10Be)9Be/10Be/11B/12C/13C, 14C/210Po, E=58, 60, 62, 63.7 MeV; measured reaction products, light beamlike ejectiles, Eγ, Iγ, (charged particles)γ-coin at the 18 MV tandem of JAEA Tokai. 210Po; deduced six 2+ and three 3- levels in two-proton stripping reaction, configurations.

doi: 10.1103/PhysRevC.101.014309
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2020KH11      Phys.Rev. C 102, 064602 (2020)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.K.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.B.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Search for elements 119 and 120

NUCLEAR REACTIONS 249Bk, 249Cf(50Ti, X)299119*/299120*, E(average)=281.5 MeV; measured evaporation residues (ERs), Eα, correlated ER-α and ER-α12-SF events using UNILAC accelerator, TASCA separator, and Focal plane detector system (FPDS) consisting of double-sided silicon strip (DSSD) detectors, and Si-strip detectors for position and time correlations of events. 295,296119, 295,296120; deduced no evidence for non-random correlated events related to 3n- or 4n-channel deexcitations of the compound nuclei 299119 and 299120, within a sensitivity limit of one event corresponding to σ=65 fb for 249Bk+50Ti reaction and σ=200 fb for 249Cf+50Ti; discussed nonobservation of Z=119 and 120 superheavy elements within the context of the fusion-evaporation reaction mechanism.

doi: 10.1103/PhysRevC.102.064602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8036.


2019KH04      Phys.Rev. C 99, 054306 (2019)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Fusion reaction 48Ca + 249Bk leading to formation of the element Ts (Z=117)

NUCLEAR REACTIONS 249Bk(48Ca, 3n), (48Ca, 4n)293Ts/294Ts, E=252.1, 254.0, 258.0 MeV; measured reaction products, evaporation residues (ER), Eα, Iα, (ER)α-correlated decay chains, and σ using double-sided silicon strip detectors for α detection, TASCA separator for evaporation residue, and multiwire proportional counter for detection of residues at UNILAC accelerator facility of GSI. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility.

RADIOACTIVITY 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db(α); 293Ts, 289Mc, 285Nh, 281Rg(α); 266Lr, 270Db, 277Mt, 277Hs(SF); measured Eα, Iα, SF events, half-lives. 266Lr, 270Db(α), (SF); measured half-lives and α/SF branching ratios. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility. A=200-240; A=240-260; systematics of α-decay half-lives of isotopes produced in 48Ca+249Bk and 48Ca+249Cf reactions.

doi: 10.1103/PhysRevC.99.054306
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0944. Data from this article have been entered in the XUNDL database. For more information, click here.


2019XI06      Phys.Rev. C 100, 034315 (2019)

Y.Xiao, S.Go, R.Grzywacz, R.Orlandi, A.N.Andreyev, M.Asai, M.A.Bentley, G.de Angelis, C.J.Gross, P.Hausladen, K.Hirose, S.Hofmann, H.Ikezoe, D.G.Jenkins, B.Kindler, R.Leguillon, B.Lommel, H.Makii, C.Mazzocchi, K.Nishio, P.Parkhurst, S.V.Paulauskas, C.M.Petrache, K.P.Rykaczewski, T.K.Sato, J.Smallcombe, A.Toyoshima, K.Tsukada, K.Vaigneur, R.Wadsworth

Search for α decay of 104Te with a novel recoil-decay scintillation detector

RADIOACTIVITY 108,109Xe, 104,105Te(α)[from 54Fe(58Ni, X), E=250 MeV from the tandem accelerator of the Japan Atomic Energy Agency (JAEA), followed by separation of evaporation residues using Recoil Mass Separator (RMS)]; measured Eα, Iα, αα-correlations using an inorganic scintillator YAP:Ce for implanted nuclei, and a multiwire proportional chamber (MWPC) for α particles; deduced αα-correlations for the 109Xe to 105Te to 101Sn α-decay chain, and no conclusive trace observed for the 108Xe to 104Te to 100Sn α-decay chain, half-life of 108Xe decay, upper limit of 4 ns for the half-life of 104Te; estimated cross section for the production of 108Xe, an order of magnitude lower than the expectation based on earlier cross section measurements and the HIVAP fusion-evaporation code. 109I(p), 108,109Te(α); measured proton and α spectra, half-life of 109I decay. Comparison with data for 108Xe to 104Te to 100Sn α-decay chain reported by 2018Au04.

doi: 10.1103/PhysRevC.100.034315
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2017KA66      J.Phys.Soc.Jpn. 86, 034201 (2017)

D.Kaji, K.Morita, K.Morimoto, H.Haba, M.Asai, K.Fujita, Z.Gan, H.Geissel, H.Hasebe, S.Hofmann, M.H.Huang, Y.Komori, L.Ma, J.Maurer, M.Murakami, M.Takeyama, F.Tokanai, T.Tanaka, Y.Wakabayashi, T.Yamaguchi, S.Yamaki, A.Yoshida

Study of the Reaction 48Ca + 248Cm → 296Lv* at RIKEN-GARIS

RADIOACTIVITY 292Lv, 288Fl, 284Cn, 293Lv, 289Fl, 285Cn, 294Lv, 290Fl(α) [from 248Cm(48Ca, X)296Lv, E=261.6, 258.0 MeV]; measured decay products, Eα, Iα; deduced decay branches and ratios.

NUCLEAR REACTIONS 248Cm(48Ca, X)296Lv, E=261.6, 258.0 MeV; measured reaction products; deduced σ. Comparison with available data.

doi: 10.7566/jpsj.86.034201
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2538.


2015AS05      Nucl.Phys. A944, 308 (2015)

M.Asai, F.P.Hessberger, A.Lopez-Martens

Nuclear structure of elements with 100 ≤ Z ≤ 109 from alpha spectroscopy

NUCLEAR STRUCTURE 245Pu, 247Cm, 249Cf, 251Fm, 253No, 255Rf, 257Sg, 259Hs, 249Cm, 251Cf, 253Fm, 255No, 257Rf, 259Sg, 261Hs, 249Pu, 251Cm, 253Cf, 255Fm, 257No, 259Rf, 261Sg, 263Hs; calculated energy levels, J, π, Nilsson single-particle energies, deformation parameters. Comparison with available data.

RADIOACTIVITY 247Cm, 249Cf, 251Fm, 253No, 255Rf, 257Sg, 251Cf, 253Fm, 255No, 257Rf, 259Sg, 261Hs(α), 247Cm, 249Cf, 251Fm, 253No(IT), 249Cm, 251Cf, 253Fm, 257Rf, 259Sg(IT), 253Cf, 255Fm, 257No, 259Rf, 261Sg(α), 259No, 261Rf(α); analyzed decay products, Eα, Iα, Eγ, Iγ, α-γ-coin.; deduced energy levels, J, π, T1/2. Internal-conversion-electron coincidence spectroscopy.

doi: 10.1016/j.nuclphysa.2015.06.011
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2014CH38      Nucl.Data Sheets 119, 229 (2014)

S.Chiba, K.Nishio, H.Makii, Y.Aritomo, I.Nishinaka, T.Ishii, K.Tsukada, M.Asai, K.Furutaka, S.Hashimoto, H.Koura, K.Ogata, T.Ohtsuki, T.Nagayama

Surrogate Reactions Research at JAEA/Tokyo Tech

NUCLEAR REACTIONS 235,238U(18O, F), E not given; measured reaction products; deduced fission fragment mass yields. 238U(18O, 16O), E not given; measured ejectiles, fission fragments; deduced fission fragment mass distribution, yields vs E*, unnormalized fission probability; calculated fission fragment mass distribution using multidimensional Langevin method. 239U(n, F), E=0.5-20 MeV; measured fission fragments; deduced fission σ vs neutron energy. 155Gd(18O, 16O), E not given; measured reaction products. 156Gd(n, γ), E=0.5-3.5 MeV; deduced σ using SRM (surrogate ratio method). Compared with ENDF/B/VII.1.

doi: 10.1016/j.nds.2014.08.063
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2014HA38      Nucl.Instrum.Methods Phys.Res. A747, 41 (2014)

H.Hayashi, M.Shibata, M.Asai, A.Osa, T.K.Sato, M.Koizumi, A.Kimura, M.Oshima

Performance of a total absorption clover detector for Qβ measurements of neutron-rich nuclei far from the β-stability line

RADIOACTIVITY 160,161,162,163,164,165,166Eu, 163,165Gd(β-); measured decay products, Eβ, Iβ, Eγ, Iγ; deduced T1/2 and their uncertainties. Comparison with available data.

doi: 10.1016/j.nima.2014.02.012
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2014HE32      Phys.Rev.Lett. 113, 262505 (2014)

G.Henning, T.L.Khoo, A.Lopez-Martens, D.Seweryniak, M.Alcorta, M.Asai, B.B.Back, P.F.Bertone, D.Boilley, M.P.Carpenter, C.J.Chiara, P.Chowdhury, B.Gall, P.T.Greenlees, G.Gurdal, K.Hauschild, A.Heinz, C.R.Hoffman, R.V.F.Janssens, A.V.Karpov, B.P.Kay, F.G.Kondev, S.Lakshmi, T.Lauritsen, C.J.Lister, E.A.McCutchan, C.Nair, J.Piot, D.Potterveld, P.Reiter, A.M.Rogers, N.Rowley, S.Zhu

Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases of 254No and 220Th

NUCLEAR REACTIONS 208Pb(48Ca, 2n), E=217, 220.5 MeV; 176Yb(48Ca, 4n), E=219 MeV; measured reaction products, Eγ, Iγ; deduced fission barrier heights. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.

doi: 10.1103/PhysRevLett.113.262505
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2014KH04      Phys.Rev.Lett. 112, 172501 (2014)

J.Khuyagbaatar, A.Yakushev, C.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

48Ca + 249Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying 270Db and Discovery of 266Lr

NUCLEAR REACTIONS 249Bk(48Ca, X)294Ts, E=268.3, 270.2, 274.1 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with experimental data.

RADIOACTIVITY 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db, 266Lr(α); measured decay products, Eα, Iα; deduced T1/2. Comparison with experimental data.

doi: 10.1103/PhysRevLett.112.172501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0731. Data from this article have been entered in the XUNDL database. For more information, click here.


2014SA21      Radiochim.Acta 102, 211 (2014)

N.Sato, T.K.Sato, M.Asai, A.Toyoshima, K.Tsukada, Z.J.Li, K.Nishio, Y.Nagame, M.Schadel, H.Haba, S.Ichikawa, H.Kikunaga

Production of 256Lr in the 249, 250, 251Cf + 11B, 243Am + 18O, and 248Cm + 14N reactions

NUCLEAR REACTIONS 249,250,251Cf(11B, xn)256Lr, E=65.1-76.4 MeV; 243Am(18O, 5n), E=106.9-112.4 MeV; 248Cm(14N, 6n), E=101.5 MeV; measured reaction products, Eα, Iα; deduced σ, T1/2. Comparison with available data.

doi: 10.1515/ract-2014-2142
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2465.


2013AS02      Phys.Rev. C 87, 014332 (2013)

M.Asai, K.Tsukada, M.Sakama, H.Haba, T.Ichikawa, Y.Ishii, A.Toyoshima, T.Ishii, I.Nishinaka, Y.Nagame, Y.Kasamatsu, M.Shibata, Y.Kojima, H.Hayashi

Ground-state configuration of the N=157 nucleus 259No

RADIOACTIVITY 259No(α)[from 248Cm(18O, 3nα), E=94 MeV]; measured Eα, Iα, Eγ, I(K-x rays), αγ-coin, T1/2 at JAEA facility. 255Fm; deduced levels, J, π, multipolarity, configuration. 259No; deduced ground-state configuration. 255,257,259,261,263,265No; calculated energies of neutron single-particle orbitals, and β2, β4, β6 deformation parameters using macroscopic-microscopic model based on FRLDM and Strutinsky shell correction method. Observed α lines from decays of 211,213,214Po, 211At, 250,254,255,256Fm, 253Es, 257No, 261Rf formed in competing reaction channels.

doi: 10.1103/PhysRevC.87.014332
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012FO03      Acta Phys.Pol. B43, 305 (2012)

U.Forsberg, P.Golubev, L.G.Sarmiento, J.Jeppsson, D.Rudolph, L.-L.Andersson, D.Ackermann, M.Asai, M.Block, K.Eberhardt, J.Even, Ch.E.Dullmann, J.Dvorak, J.M.Gates, K.E.Gregorich, R.-D.Herzberg, F.P.Hessberger, E.Jager, J.Khuyagbaatar, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, S.Lahiri, B.Lommel, M.Maiti, E.Merchan, J.P.Omtvedt, E.Parr, J.Runke, H.Schaffner, M.Schadel, A.Yakushev

First Experiment at TASCA Towards X-Ray Fingerprinting of Element 115 Decay Chains

NUCLEAR REACTIONS 208Pb(48Ca, 2n)254No, E=4.59 MeV/nucleon; measured reaction fusion-evaporation products; deduced distribution of evaporation residue. Comparison with theoretical calculations.

doi: 10.5506/APhysPolB.43.305
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2012GR12      Phys.Rev.Lett. 109, 012501 (2012)

P.T.Greenlees, J.Rubert, J.Piot, B.J.P.Gall, L.L.Andersson, M.Asai, Z.Asfari, D.M.Cox, F.Dechery, O.Dorvaux, T.Grahn, K.Hauschild, G.Henning, A.Herzan, R.-D.Herzberg, F.P.Hessberger, U.Jakobsson, P.Jones, R.Julin, S.Juutinen, S.Ketelhut, T.-L.Khoo, M.Leino, J.Ljungvall, A.Lopez-Martens, R.Lozeva, P.Nieminen, J.Pakarinen, P.Papadakis, E.Parr, P.Peura, P.Rahkila, S.Rinta-Antila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, D.Seweryniak, J.Sorri, B.Sulignano, Ch.Theisen, J.Uusitalo, M.Venhart

Shell-Structure and Pairing Interaction in Superheavy Nuclei: Rotational Properties of the Z=104 Nucleus 256Rf

NUCLEAR REACTIONS 208Pb(50Ti, 2n)256Rf, E=242 MeV; measured reaction products, Eγ, Iγ; deduced σ, T1/2, rotational band structure, energies, J, π, moments of inertia. Comparison with available data, systematics.

doi: 10.1103/PhysRevLett.109.012501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011AS03      Phys.Rev. C 83, 014315 (2011)

M.Asai, K.Tsukada, H.Haba, Y.Ishii, T.Ichikawa, A.Toyoshima, T.Ishii, Y.Nagame, I.Nishinaka, Y.Kojima, K.Sueki

Neutron one-quasiparticle states in 251Fm151 populated via the α decay of 255No

RADIOACTIVITY 255No(α)[from 248Cm(12C, 5n), E=77 MeV; measured Eα, Iα, Eγ, Iγ, αγ-coin, T1/2, level half-lives from delayed spectra. 251Fm; deduced levels, J, π, α hindrance factors, conversion coefficients, multipolarities, B(E2), configurations. Comparison of α hindrance factors with those from α decay of 251Cf and 253Fm.

NUCLEAR STRUCTURE 245Pu, 247Cm, 249Cf, 251Fm, 253No, 255Rf; calculated one quasiparticle neutron states in N=151 nuclei using macroscopic-microscopic approach with finite-range liquid drop model involving β2, β4, β6 and β8 deformation parameters.

doi: 10.1103/PhysRevC.83.014315
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011RO20      Phys.Rev. C 83, 064311 (2011)

A.P.Robinson, T.L.Khoo, D.Seweryniak, I.Ahmad, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, J.Greene, P.T.Greenlees, K.Hauschild, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, D.G.Jenkins, G.D.Jones, S.Ketelhut, F.G.Kondev, T.Lauritsen, C.J.Lister, A.Lopez-Martens, P.Marley, E.McCutchan, P.Papadakis, D.Peterson, J.Qian, D.Rostron, U.Shirwadkar, I.Stefanescu, S.K.Tandel, X.Wang, S.Zhu

Search for a 2-quasiparticle high-K isomer in 256Rf

NUCLEAR STRUCTURE 256Rf; calculated ground state and rotational band energies, configurations using Woods-Saxon Potential.

NUCLEAR REACTIONS 208Pb(50Ti, 2n), E=240 MeV; measured Eγ, Iγ, ce, γγ-, γ(ce)-coin, γ(t), half-life. 256Rf; deduced levels, J, π, isomers, configurations; calculated energies of two-quasiparticle high-K isomers with the universal Woods-Saxon energies. 170Er(50Ti, 4n)216Th, E=222 MeV; measured Eγ, ce, γ(ce)-coin from isomer, half-life, isomer ratio; used as a test case.

doi: 10.1103/PhysRevC.83.064311
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Data from this article have been entered in the XUNDL database. For more information, click here.


2010SE10      Nucl.Phys. A834, 357c (2010)

D.Seweryniak, T.L.Khoo, I.Ahmad, F.G.Kondev, A.Robinson, S.K.Tandel, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, S.Eeckhaudt, J.P.Greene, P.T.Greenlees, S.Gros, K.Hauschild, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, D.G.Jenkins, G.D.Jones, S.Ketelhut, T.Lauritsen, C.J.Lister, A.Lopez-Martens, P.Marley, E.A.McCutchan, T.Nakatsukasa, P.Papadakis, D.Peterson, J.Qian, D.Rostron, I.Stefanescu, U.S.Tandel, X.F.Wang, S.F.Zhu

Bridging the nuclear structure gap between stable and super heavy nuclei

NUCLEAR STRUCTURE 249Bk; calculated single-proton energies using different interactions; 252,254No, 256,257Rf; deduced configurations. Comparison with data.

doi: 10.1016/j.nuclphysa.2010.01.039
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2010TA10      Phys.Rev. C 81, 057303 (2010)

R.Takahashi, T.Ishii, M.Asai, D.Nagae, H.Makii, K.Tsukada, A.Toyoshima, Y.Ishii, M.Matsuda, A.Makishima, T.Shizuma, T.Kohno, M.Ogawa

In-beam γ-ray spectroscopy of 248, 250, 252Cf by neutron-transfer reactions using a Cf target

NUCLEAR REACTIONS 249,250,251Cf(18O, 16O), (18O, n16O), (18O, 17O), (18O, n17O), (18O, 18O), (18O, n18O), (18O, n18O), , E=153 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 248,250,252Cf; deduced levels, J, π, ground-state rotational bands, moments of inertia. Radioactive Cf target with 63% 249Cf, 13% 250Cf, 24% 251Cf.

doi: 10.1103/PhysRevC.81.057303
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2009QI04      Phys.Rev. C 79, 064319 (2009)

J.Qian, A.Heinz, T.L.Khoo, R.V.F.Janssens, D.Peterson, D.Seweryniak, I.Ahmad, M.Asai, B.B.Back, M.P.Carpenter, A.B.Garnsworthy, J.P.Greene, A.A.Hecht, C.L.Jiang, F.G.Kondev, T.Lauritsen, C.J.Lister, A.Robinson, G.Savard, R.Scott, R.Vondrasek, X.Wang, R.Winkler, S.Zhu

Spectroscopy of 257Rf

NUCLEAR REACTIONS 208Pb(50Ti, n), E=233 MeV; measured Eα, Iα, ce, fission events correlated with evaporation residues, Eγ, Iγ, (ce)α-, (ce)γ-coin, isomer half-lives, (evaporation residues)-ce-α-α correlations. 257Rf; deduced levels, J, π, configurations. 257Rf; calculated excitation energies of 1-qp states and rotational bands built on 1-qp and 3-qp bandheads. A=245-257, odd-A Pu, Cm, Cf, Fm, No, Rf; Nilsson orbital systematics.

RADIOACTIVITY 257Rf(α)(EC)(SF), 257mRf(α)(EC), 257Lr(α), 256Rf(SF), 253No(α)(EC); measured Eα, Iα, Eγ, fission events, (ce)α-coin, half-lives, and fission branching ratios. 253No; deduced levels, J, π, α hindrance factors, and configurations.

doi: 10.1103/PhysRevC.79.064319
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2008IS05      Phys.Rev. C 78, 054309 (2008)

T.Ishii, H.Makii, M.Asai, K.Tsukada, A.Toyoshima, M.Matsuda, A.Makishima, S.Shigematsu, J.Kaneko, T.Shizuma, H.Toume, I.Hossain, T.Kohno, M.Ogawa

Observation of high-j quasiparticle states in 249Cm by in-beam γ-ray spectroscopy using heavy-ion transfer reactions

NUCLEAR REACTIONS 248Cm(16O, 15O), (18O, 17O), E=162 MeV; 248Cm(13C, 12C), E=120 MeV; measured Eγ, Iγ, γγ-coin, half-lives, σ. 249Cm; deduced levels, J, π, bands, configurations.

doi: 10.1103/PhysRevC.78.054309
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2008RO21      Phys.Rev. C 78, 034308 (2008)

A.P.Robinson, T.L.Khoo, I.Ahmad, S.K.Tandel, F.G.Kondev, T.Nakatsukasa, D.Seweryniak, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, S.Eeckhaudt, J.P.Greene, P.T.Greenlees, S.Gros, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, G.D.Jones, T.Lauritsen, C.J.Lister, D.Peterson, J.Qian, U.S.Tandel, X.Wang, S.Zhu

Kπ = 8- isomers and Kπ = 2- octupole vibrations in N = 150 shell-stabilized isotones

NUCLEAR REACTIONS 206Pb(48Ca, 2n), E=217 MeV; measured Eγ, Iγ, conversion electron spectra, γγ-, (ce)γ-coin, half-life. 252No; deduced levels, J, π. 244Pu, 248Cf, 250Fm; systematics of 2- and 8- states.

RADIOACTIVITY 246Am(β-) [from 244Pu(α, pn), E=42 MeV]; measured Eγ, Iγ, conversion electron spectra, γγ-, (ce)γ-spectra, isomer half-life. 246Cm; deduced levels, J, π.

doi: 10.1103/PhysRevC.78.034308
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2008TO16      Phys.Rev. C 78, 067602 (2008)

T.Toshito, K.Kodama, L.Sihver, K.Yusa, M.Ozaki, K.Amako, S.Kameoka, K.Murakami, T.Sasaki, S.Aoki, T.Ban, T.Fukuda, H.Kubota, N.Naganawa, T.Nakamura, T.Nakano, M.Natsume, K.Niwa, S.Takahashi, J.Yoshida, H.Yoshida, M.Kanazawa, N.Kanematsu, M.Komori, S.Sato, M.Asai, T.Koi, C.Fukushima, S.Ogawa, M.Shibasaki, H.Shibuya

Measurements of projectile-like 8Be and 9B production in 200-400 MeV/nucleon 12C on water

NUCLEAR REACTIONS H, O(12C, X)8Be/9B, E=200-400 MeV/nucleon; measured σ.

doi: 10.1103/PhysRevC.78.067602
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2007HA57      Eur.Phys.J. A 34, 363 (2007)

H.Hayashi, Y.Akita, O.Suematsu, M.Shibata, M.Asai, T.K.Sato, S.Ichikawa, I.Nishinaka, Y.Nagame, A.Osa, K.Tsukada, T.Ishii, Y.Kojima, A.Taniguchi

Qβ measurements of 158, 159Pm, 159, 161Sm, 160-165Eu, 163Gd and 166Tb using a total absorption BGO detector

RADIOACTIVITY 158,159Pm, 159,161Sm, 160,161,162,163,164,165Eu, 163Gd, 166Tb(β-) [from 238U(p, F), E=24 MeV and subsequent decay]; measured Eγ, Iγ, Eβ, Iβ; deduced Qβ, mass excess and two-neutron separation energies. Mass separator.

doi: 10.1140/epja/i2006-10522-9
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2007IS09      Phys.Rev. C 76, 011303 (2007)

T.Ishii, H.Makii, M.Asai, H.Koura, S.Shigematsu, K.Tsukada, A.Toyoshima, M.Matsuda, A.Makishima, J.Kaneko, H.Toume, I.Hossain, T.Shizuma, S.Ichikawa, T.Kohno, M.Ogawa

Ground-state bands of neutron-rich 236Th and 242U nuclei and implication of spherical shell closure at N = 164

NUCLEAR REACTIONS 238U(18O, 20Ne), E=200 MeV; 244Pu(16O, 20Ne), E=162 MeV; measured Eγ, Iγ, (particle)γ-coinc. 236Th, 242U deduced levels, J, π.

doi: 10.1103/PhysRevC.76.011303
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2007IS11      Phys.Atomic Nuclei 70, 1457 (2007)

T.Ishii, S.Shigematsu, H.Makii, M.Asai, K.Tsukada, A.Toyoshima, M.Matsuda, A.Makishima, T.Shizuma, J.Kaneko, I.Hossain, H.Toume, M.Ohara, S.Ichikawa, T.Kohno, M.Ogawa

In-beam γ-ray study of the neutron-rich nuclei 240U, 246Pu, and 250Cm produced by the (18O, 16O) reaction

NUCLEAR REACTIONS U(18O, 16O)240U, E=200 MeV; 244Pu(18O, 16O)246Pu, E=200 MeV; 248Cm(18O, 16O), e=200 meV; measured Eγ, Iγ, (particle)γ-coinc. 240U, 246Pu, 250Cm deduced levels, J, π, moments of inertia.

doi: 10.1134/S1063778807080224
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2007MA82      Phys.Rev. C 76, 061301 (2007)

H.Makii, T.Ishii, M.Asai, K.Tsukada, A.Toyoshima, M.Matsuda, A.Makishima, J.Kaneko, H.Toume, S.Ichikawa, S.Shigematsu, T.Kohno, M.Ogawa

Z dependence of the N = 152 deformed shell gap: In-beam γ-ray spectroscopy of neutron-rich 245, 246Pu

NUCLEAR REACTIONS 244Pu(18O, 17O), (18O, 16O), E=162 MeV; measured Eγ, Iγ, γγ-coin, half-lives. 245,246Pu; deduced levels, J, π, configurations. Compared with experimental and calculated values for the first 2+ level energy in 232,234,236,238,240,242U, 234,236,238,240,242,244,248Pu, 240,242,244,246,248,250Cm, 244,246,248,250,252,254Cf, 250,252,254,256Fm, 248,250,252,254,256,258No. 247Cm, 249Cf, 251Fm, 253No; systematics.

doi: 10.1103/PhysRevC.76.061301
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2007TO14      Phys.Rev. C 75, 054606 (2007)

T.Toshito, K.Kodama, L.Sihver, K.Yusa, M.Ozaki, K.Amako, S.Kameoka, K.Murakami, T.Sasaki, S.Aoki, T.Ban, T.Fukuda, M.Komatsu, H.Kubota, N.Naganawa, T.Nakamura, T.Nakano, M.Natsume, K.Niwa, S.Takahashi, J.Yoshida, H.Yoshida, M.Kanazawa, N.Kanematsu, M.Komori, S.Sato, M.Asai, T.Koi, C.Fukushima, S.Ogawa, M.Shibasaki, H.Shibuya

Measurements of total and partial charge-changing cross sections for 200- to 400-MeV/nucleon 12C on water and polycarbonate

NUCLEAR REACTIONS H, C, O(12C, X), E=200, 400 MeV/nucleon; measured total and partial charge changing cross sections.

doi: 10.1103/PhysRevC.75.054606
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2006AL34      IEEE trans.nucl.sci. 53, 270 (2006)

J.Allison, K.Amako, J.Apostolakis, H.Araujo, P.Arce Dubois, M.Asai, G.Barrand, R.Capra, S.Chauvie, R.Chytracek, G.A.P.Cirrone, G.Cooperman, G.Cosmo, G.Cuttone, G.G.Daquino, M.Donszelmann, M.Dressel, G.Folger, F.Foppiano, J.Generowicz, V.Grichine, S.Guatelli, P.Gumplinger, A.Heikkinen, I.Hrivnacova, A.Howard, S.Incerti, V.Ivanchenko, T.Johnson, F.Jones, T.Koi, R.Kokoulin, M.Kossov, H.Kurashige, V.Lara, S.Larsson, F.Lei, O.Link, F.Longo, M.Maire, A.Mantero, B.Mascialino, I.McLaren, P.Mendez Lorenzo, K.Minamimoto, K.Murakami, P.Nieminen, L.Pandola, S.Parlati, L.Peralta, J.Perl, A.Pfeiffer, M.G.Pia, A.Ribon, P.Rodrigues, G.Russo, S.Sadilov, G.Santin, T.Sasaki, D.Smith, N.Starkov, S.Tanaka, E.Tcherniaev, B.Tome, A.Trindade, P.Truscott, L.Urban, M.Verderi, A.Walkden, J.P.Wellisch, D.C.Williams, D.Wright, H.Yoshida

Geant4 Developments and Applications

doi: 10.1109/TNS.2006.869826
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2006AS03      Phys.Rev. C 73, 067301 (2006)

M.Asai, K.Tsukada, S.Ichikawa, M.Sakama, H.Haba, I.Nishinaka, Y.Nagame, S.Goto, Y.Kojima, Y.Oura, M.Shibata

α decay of 238Cm and the new isotope 237Cm

NUCLEAR REACTIONS 237Np(6Li, X), E=52-59 MeV; measured delayed Eα, Iα; deduced evidence for 236,238Pu, 237Am, 237,238Cm. Mass separator.

RADIOACTIVITY 238Cm(α) [from 237Np(6Li, 5n)]; measured Eα, T1/2. 234Pu deduced 2+ excited state energy. Systematics of 2+ levels discussed.

doi: 10.1103/PhysRevC.73.067301
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2006IS07      J.Phys.Soc.Jpn. 75, 043201 (2006)

T.Ishii, S.Shigematsu, H.Makii, M.Asai, K.Tsukada, A.Toyoshima, M.Matsuda, A.Makishima, T.Shizuma, J.Kaneko, I.Hossain, H.Toume, M.Ohara, S.Ichikawa, T.Kohno, M.Ogawa

Ground-State Band of the Neutron-Rich Transuranium Nucleus 250Cm154

NUCLEAR REACTIONS 248Cm(18O, 16O), E=162 MeV; measured Eγ, Iγ, (particle)γ-coin. 250Cm deduced levels, J, π.

doi: 10.1143/JPSJ.75.043201
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2006NI09      Phys.Atomic Nuclei 69, 1399 (2006)

K.Nishio, H.Ikezoe, M.Asai, K.Tsukada, S.Mitsuoka, K.Tsuruta, K.Satou, C.J.Lin, T.Ohsawa

Evidence of Complete Fusion in the Subbarrier 16O + 238U Reaction

NUCLEAR REACTIONS 238U(16O, 4n), (16O, 5n), (16O, 6n), E(cm)=70-95 MeV; measured evaporation residue σ; deduced reaction mechanism features. Comparison with statistical model predictions.

RADIOACTIVITY 248,249,250Fm(α) [from 238U(16O, xn)]; measured Eα, T1/2.

doi: 10.1134/S1063778806080187
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2005AS01      Eur.Phys.J. A 23, 395 (2005)

M.Asai, M.Sakama, K.Tsukada, S.Ichikawa, H.Haba, I.Nishinaka, Y.Nagame, S.Goto, Y.Kojima, Y.Oura, H.Nakahara, M.Shibata, K.Kawade

Proton-neutron configurations in 236g, mAm and its EC-decay daughter 236Pu

RADIOACTIVITY 236,236mAm(EC) [from 235U(6Li, 5n)]; measured Eγ, Iγ, γγ-, (X-ray)γ-coin, T1/2; deduced log ft. 236Pu deduced levels, J, π, configurations, β-feeding intensities, B(E1), B(M1). 236Am deduced isomeric state J, π, configuration.

doi: 10.1140/epja/i2004-10096-6
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2005AS05      Phys.Rev.Lett. 95, 102502 (2005)

M.Asai, K.Tsukada, M.Sakama, S.Ichikawa, T.Ishii, Y.Nagame, I.Nishinaka, K.Akiyama, A.Osa, Y.Oura, K.Sueki, M.Shibata

Experimental Identification of Spin-Parities and Single-Particle Configurations in 257No and Its α-Decay Daughter 253Fm

RADIOACTIVITY 257No(α) [from 248Cm(13C, 4n)]; measured Eγ, Eα, E(ce), αγ-, (ce)α-coin; deduced branching ratios. 253Fm deduced levels, J, π, ICC, configurations. 257No deduced ground-state J, π, configuration.

doi: 10.1103/PhysRevLett.95.102502
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2005IC02      Phys.Rev. C 71, 067302 (2005)

S.Ichikawa, M.Asai, K.Tsukada, H.Haba, Y.Nagame, M.Shibata, M.Sakama, Y.Kojima

β-decay half-lives of new neutron-rich rare-earth isotopes 159Pm, 162Sm, and 166Gd

RADIOACTIVITY 159Pm, 162Sm, 166Gd, 166Tb(β-) [from 238U(p, F)]; measured Eγ, Iγ, βγ-, γγ-coin, T1/2. 166Tb deduced levels, β-feeding intensities.

doi: 10.1103/PhysRevC.71.067302
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2005II01      Eur.Phys.J. A 23, 33 (2005)

H.Iimura, M.Asai, S.Ichikawa, J.Katakura, M.Magara, A.Osa, M.Oshima, N.Shinohara, H.Yamamoto

Levels in 127La fed by the 127Ce beta-decay

RADIOACTIVITY 127Ce(β+), (EC) [from Mo(35Cl, xnp)]; measured Eγ, Iγ, E(ce), I(ce), βγ-, γγ-coin, T1/2. 127La deduced levels, J, π, T1/2, configurations. Comparison with Nilsson model predictions.

doi: 10.1140/epja/i2004-10067-y
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2005IS07      Phys.Rev. C 72, 021301 (2005)

T.Ishii, S.Shigematsu, M.Asai, A.Makishima, M.Matsuda, J.Kaneko, I.Hossain, S.Ichikawa, T.Kohno, M.Ogawa

In-beam γ-ray spectroscopy of 240U using the (18O, 16O) reaction

NUCLEAR REACTIONS 238U(18O, 16O), E=200 MeV; measured Eγ, Iγ, (particle)γ-coin, γ-ray anisotropy. 240U deduced levels, J, π, rotational bands, octupole correlations.

doi: 10.1103/PhysRevC.72.021301
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2005NA46      Radiochim.Acta 93, 519 (2005)

Y.Nagame, K.Tsukada, M.Asai, A.Toyoshima, K.Akiyama, Y.Ishii, T.Kaneko-Sato, M.Hirata, I.Nishinaka, S.Ichikawa, H.Haba, S.Enomoto, K.Matsuo, D.Saika, Y.Kitamoto, H.Hasegawa, Y.Tani, W.Sato, A.Shinohara, M.Ito, J.Saito, S.Goto, H.Kudo, H.Kikunaga, N.Kinoshita, A.Yokoyama, K.Sueki, Y.Oura, H.Nakahara, M.Sakama, M.Schadel, W.Bruchle, J.V.Kratz

Chemical studies on rutherfordium (Rf) at JAERI

NUCLEAR REACTIONS 248Cm(18O, 5n), E ≈ 90-100 MeV; measured excitation function. Chemical properties of rutherfordium studied.

doi: 10.1524/ract.2005.93.9-10.519
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2004AS12      Eur.Phys.J. A 22, 411 (2004)

M.Asai, M.Sakama, K.Tsukada, S.Ichikawa, H.Haba, I.Nishinaka, Y.Nagame, S.Goto, Y.Kojima, Y.Oura, H.Nakahara, M.Shibata, K.Kawade

EC and α decays of 235Am

RADIOACTIVITY 235Am(EC), (α) [from 233U(6Li, 4n)]; measured Eγ, Iγ, Eα, X-ray spectra, γγ-, αγ-coin; deduced log ft, Qα. 235Am deduced ground-state J, π. 235Pu deduced levels, J, π, ICC, β-feeding intensities. 231Np deduced level energy. Level systematics in neighboring nuclides discussed.

doi: 10.1140/epja/i2004-10044-6
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2004MI17      Nucl.Instrum.Methods Phys.Res. A523, 96 (2004)

H.Miyahara, K.Katoh, N.Marnada, K.Ikeda, K.Fujiki, I.Nishinaka, K.Tsukada, Y.Nagame, M.Asai, S.-I.Ichikawa, H.Haba

Emission probability measurement of principal γ-rays of 147Eu

RADIOACTIVITY 147Eu(β+), (EC) [from 147Sm(p, n)]; measured Eγ, Iγ, βγ-coin; deduced γ-ray emission probabilities, electron capture branching ratio. 147Sm levels deduced feeding intensities.

doi: 10.1016/j.nima.2003.12.029
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2004MI43      Nucl.Instrum.Methods Phys.Res. A533, 404 (2004)

H.Miyahara, K.Katoh, K.Ikeda, K.Fujiki, I.Nishinaka, K.Tsukada, Y.Nagame, M.Asai, S.Ichikawa, H.Haba

Gamma-ray emission probability measurement of 149Eu

RADIOACTIVITY 149Eu(EC) [from 149Sm(p, n)]; measured Eγ, Iγ; deduced branching ratios, emission probabilities. 149Sm deduced transition intensities, internal conversion probabilities.

doi: 10.1016/j.nima.2004.06.171
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2004NA10      Nucl.Phys. A734, 124 (2004)

Y.Nagame, H.Haba, K.Tsukada, M.Asai, A.Toyoshima, S.Goto, K.Akiyama, T.Kaneko, M.Sakama, M.Hirata, T.Yaita, I.Nishinaka, S.Ichikawa, H.Nakahara

Chemical studies of the heaviest elements

doi: 10.1016/j.nuclphysa.2004.01.021
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2004NI10      Phys.Rev.Lett. 93, 162701 (2004)

K.Nishio, H.Ikezoe, Y.Nagame, M.Asai, K.Tsukada, S.Mitsuoka, K.Tsuruta, K.Satou, C.J.Lin, T.Ohsawa

Evidence of Complete Fusion in the Sub-Barrier 16O + 238U Reaction

NUCLEAR REACTIONS 238U(16O, 4n), (16O, 5n), (16O, 6n), E(cm) ≈ 70-105 MeV; measured evaporation residue σ; deduced complete fusion at sub-barrier energies, role of orientation and deformation. Comparison with statistical model predictions.

doi: 10.1103/PhysRevLett.93.162701
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2004SA05      Phys.Rev. C 69, 014308 (2004)

M.Sakama, M.Asai, K.Tsukada, S.Ichikawa, I.Nishinaka, Y.Nagame, H.Haba, S.Goto, M.Shibata, K.Kawade, Y.Kojima, Y.Oura, M.Ebihara, H.Nakahara

α-decays of neutron-deficient americium isotopes

RADIOACTIVITY 233,234,235,236Am, 229Np(α) [from 233,235U(6Li, xn) and subsequent decay]; measured Eα, Iα, T1/2, Eγ, X-ray spectra, αγ-coin; deduced hindrance factors. 233,235,236Am deduced Qα. Mass separator.

NUCLEAR REACTIONS 235U(6Li, 5n), 233U(6Li, 4n), (6Li, 5n), (6Li, 6n), E ≈ 34-60 MeV; measured production σ.

doi: 10.1103/PhysRevC.69.014308
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2003AS01      Eur.Phys.J. A 16, 17 (2003)

M.Asai, K.Tsukada, S.Ichikawa, M.Sakama, H.Haba, Y.Nagame, I.Nishinaka, K.Akiyama, A.Toyoshima, T.Kaneko, Y.Oura, Y.Kojima, M.Shibata

Identification of the new isotope 241Bk

NUCLEAR REACTIONS 239Pu(6Li, 4n), E=34-42 MeV; measured prompt and delayed Eγ, Iγ, (X-ray)γ-, (recoil)γ-coin; deduced evidence for 241Bk. Isotope separator.

RADIOACTIVITY 241Bk(EC) [from 239Pu(6Li, 4n)]; measured Eγ, Iγ, (X-ray)γ-coin, T1/2; deduced ground-state configuration.

doi: 10.1140/epja/i2002-10112-y
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2003GO01      J.Radioanal.Nucl.Chem. 255, 73 (2003)

S.Goto, D.Kaji, I.Nishinaka, Y.L.Nagame, S.Ichikawa, K.Tsukada, M.Asai, H.Haba, S.Mitsuoka, K.Nishio, M.Sakama, Y.Zhao, K.Sueki, K.Tanikawa, K.Takamiya, H.Kudo, H.Nakahara

Characteristics of the asymmetric mass distribution in proton-induced fission of actinides

NUCLEAR REACTIONS 232Th, 233,235,238U(p, F), E=13, 15 MeV; measured fission fragment mass distributions; deduced fragment shell structure effects.

doi: 10.1023/A:1022271529219
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2003HO31      Phys.Rev. C 68, 054306 (2003); Erratum Phys.Rev. C 68, 069901 (2003)

L.Hou, T.Ishii, M.Asai, J.Hori, K.Ogawa, H.Nakada

Measurement of B(M1) for the πp3/2νp1/2-1 doublet in 68Cu

RADIOACTIVITY 68mCu(IT) [from 68Zn(n, p)]; measured Eγ, Iγ, γγ-coin. 68Cu deduced levels J, π, T1/2, configurations, B(M1). Comparison with model predictions.

doi: 10.1103/PhysRevC.68.054306
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2003NA10      Yad.Fiz. 66, 1167 (2003); Phys.Atomic Nuclei 66, 1131 (2003)

Y.Nagame, M.Asai, H.Haba, K.Tsukada, I.Nishinaka, S.Goto, A.Toyoshima, K.Akiyama, M.Sakama, Y.L.Zhao, S.Ichikawa, H.Nakahara

Heavy Element Nuclear Chemistry at JAERI

NUCLEAR REACTIONS 248Cm(18O, 5n), E=92-99 MeV; 248Cm(19F, 5n), E=106 MeV; measured σ.

RADIOACTIVITY 233,234,235,236,236mAm, 237,238Cm(α), (EC) [from 233,235U, 237Np(6Li, xn)]; measured T1/2, Eα, α-branching ratios.

doi: 10.1134/1.1586427
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2003NI01      Phys.Rev. C 67, 014604 (2003)

K.Nishio, H.Ikezoe, Y.Nagame, S.Mitsuoka, I.Nishinaka, L.Duan, K.Satou, S.Goto, M.Asai, H.Haba, K.Tsukada, N.Shinohara, S.Ichikawa, T.Ohsawa

Fragment mass distribution of the 239Pu(d, pf) reaction via the superdeformed β-vibrational resonance

NUCLEAR REACTIONS 239Pu(d, pF), E=13.5 MeV; measured Ep, (fragment)p-coin, fission fragment mass yields; deduced mass distribution for fission from superdeformed resonance. 240Pu deduced fission mechanism features.

doi: 10.1103/PhysRevC.67.014604
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2002AS08      J.Nucl.Radiochem.Sci. 3, No 1, 187 (2002)

M.Asai, M.Sakama, K.Tsukada, S.Ichikawa, H.Haba, I.Nishinaka, Y.Nagame, S.Goto, K.Akiyama, A.Toyoshima, Y.Kojima, Y.Oura, H.Nakahara, M.Shibata, K.Kawade

Decay Studies of Neutron-deficient Am, Cm, and Bk Nuclei Using an On-line Isotope Separator

RADIOACTIVITY 235,236Am(EC) [from 233,235U(6Li, xn)]; measured prompt and delayed Eγ, Iγ, γγ-coin; deduced log ft. 235,236Pu deduced levels, J, π, configurations. 233,234,235,236Am, 237,238Cm(α) [from 233,235U, 237Np(6Li, xn)]; measured Eα, T1/2. Isotope separator.

Data from this article have been entered in the XUNDL database. For more information, click here.


2002GO43      J.Nucl.Radiochem.Sci. 3, No 1, 63 (2002)

S.Goto, D.Kaji, I.Nishinaka, Y.Nagame, S.Ichikawa, K.Tsukada, M.Asai, H.Haba, S.Mitsuoka, K.Nishio, M.Sakama, Y.L.Zhao, K.Sueki, M.Tanikawa, K.Takamiya, H.Kudo, H.Nakahara

Systematic Studies of Asymmetric Mass Distributions in Proton-induced Fission of Actinides

NUCLEAR REACTIONS 239,242,244Pu(p, F), E=13 MeV; measured fission fragment kinetic energy and mass distributions; deduced shell effects.


2002IC04      Nucl.Instrum.Methods Phys.Res. B187, 548 (2002)

S.Ichikawa, K.Tsukada, M.Asai, H.Haba, M.Sakama, Y.Kojima, M.Shibata, Y.Nagame, Y.Oura, K.Kawade

Performance of the multiple target He/PbI2 aerosol jet system for mass separation of neutron-deficient actinide isotopes

NUCLEAR REACTIONS 233U(6Li, 4n)235Am, E=52 MeV; 141Pr(6Li, 4n)143Sm, E=37.2 MeV; 237Np(6Li, 6n)237Cm, E=62 MeV; measured reaction products, Eα, Iα. 233,234,235,236Am; decay products energies and T1/2. The isotope separator on line (JAERI-ISOL) at the JAERI tandem accelerator facility.

doi: 10.1016/s0168-583x(01)01145-4
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2002IS03      Eur.Phys.J. A 13, 15 (2002)

T.Ishii, M.Asai, A.Makishima, I.Hossain, P.Kleinheinz, M.Ogawa, M.Matsuda, S.Ichikawa

Gamma-Ray Spectroscopy of the Neutron-Rich Ni Region Through Heavy-Ion Deep-Inelastic Collisions

NUCLEAR REACTIONS 198Pt(76Ge, X), E=8 MeV/nucleon; measured Eγ, (recoil)γ-coin. 68Ni deduced levels, J, π, isomeric states T1/2. 78Zn, 80Ge, 82Se, 84Kr, 86Sr, 88Zr, 90Mo, 92Ru, 94Pd; analyzed levels, transitions populated by isomer decay.

doi: 10.1007/s10050-002-8711-7
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2002KA28      J.Nucl.Sci.Technol.(Tokyo) 39, 329 (2002)

K.Katoh, H.Miyahara, N.Marnada, N.Ueda, K.Ikeda, K.Fujiki, H.Haba, I.Nishinaka, K.Tsukada, Y.Nagame, M.Asai, S.-I.Ichikawa

Production of 147Eu for Gamma-Ray Emission Probability Measurement

NUCLEAR REACTIONS 147Sm(p, n), (p, 2n), E=6.7-18.0 MeV; measured production σ. Activation technique, comparison with model predictions.

doi: 10.1080/18811248.2002.9715197
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2002KO02      Appl.Radiat.Isot. 56, 543 (2002)

Y.Kojima, M.Asai, M.Shibata, K.Kawade, A.Taniguchi, A.Osa, M.Koizumi, T.Sekine

Decay Scheme of 126La Isomers

RADIOACTIVITY 126La(EC), (β+) [from 94Mo(36Ar, 3pn)]; measured Eγ, Iγ, γγ-coin, E(ce), I(ce), T1/2; deduced log ft. 126La deduced isomers J, π. 126Ba deduced levels, J, π, ICC, δ. Mass separator.

doi: 10.1016/S0969-8043(01)00248-2
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2002NA37      J.Nucl.Radiochem.Sci. 3, No 1, 85 (2002)

Y.Nagame, M.Asai, H.Haba, S.Goto, K.Tsukada, I.Nishinaka, K.Nishio, S.Ichikawa, A.Toyoshima, K.Akiyama, H.Nakahara, M.Sakama, M.Schadel, J.V.Kratz, H.W.Gaggeler, A.Turler

Production Cross Sections of 261Rf and 262Db in Bombardments of 248Cm with 18O and 19F Ions

NUCLEAR REACTIONS 248Cm(18O, 5n), E=91, 94, 99 MeV; 248Cm(19F, 5n), E=106 MeV; measured delayed Eα, αα-coin; deduced production σ.


2002SH01      Phys.Rev. C65, 024305 (2002)

M.Shibata, H.Iimura, M.Asai, A.Osa, K.Kawade, S.Ichikawa, M.Oshima, T.Sekine, N.Shinohara

Half-Life and Internal Conversion Electron Measurements in Low-Lying Levels of 125, 127Ba

RADIOACTIVITY 125,127La(EC) [from Mo(32S, pxn)]; measured Eγ, Iγ, (X-ray)γ-coin, E(ce), I(ce). 125,127La deduced levels T1/2. 125,127Ba deduced levels, J, π, ICC, isomer T1/2.

doi: 10.1103/PhysRevC.65.024305
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2002SH23      Nucl.Phys. A701, 524c (2002)

S.Shimizu, E.Doumoto, M.Yagi, M.Asai, M.Nakamura, Y.Hirayama, K.Horie, T.Shigematsu, H.Izumi, T.Shimoda, N.Takahashi

Spin Polarization of Low-Energy Radioactive Nuclear Beams by Tilted-Foil Technique

doi: 10.1016/S0375-9474(01)01639-6
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2002SH24      Nucl.Phys. A701, 583c (2002)

T.Shimoda, S.Shimizu, E.Doumoto, M.Yagi, M.Asai, M.Nakamura, Y.Hirayama, K.Horie, T.Shigematsu, H.Izumi, N.Takahashi

A Spin Polarizer for Radioactive Nuclear Beams by Taking Advantage of Polarized Electron Transfer Reactions

doi: 10.1016/S0375-9474(01)01649-9
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2001AS02      Nucl.Instrum.Methods Phys.Res. A463, 205 (2001)

M.Asai, K.Kawade, M.Shibata, Y.Kojima, A.Osa, M.Koizumi, T.Sekine

Normalization of γ-γ Angular Correlation Coincidence Counts using Characteristic X-Rays

RADIOACTIVITY 126,128La(EC) [from Mo(36Ar, xnyp)]; measured Eγ, Iγ, γγ-, (X-ray)γ-coin. 126,128Ba transitions deduced angular correlation parameters. Mass-separated sources.

doi: 10.1016/S0168-9002(01)00301-1
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2001IS02      Acta Phys.Pol. B32, 739 (2001)

T.Ishii, M.Asai, M.Matsuda, S.Ichikawa, A.Makishima, I.Hossain, P.Kleinheinz, M.Ogawa

Nano-Second Isomers in Neutron-Rich Ni Region Produced by Deep-Inelastic Collisions

NUCLEAR REACTIONS 198Pt(76Ge, X)64Cu/66Cu/67Cu/69Cu/66Ni/68Ni/64Co, E=8 MeV/nucleon; measured Eγ, Iγ, (fragment)γ-coin following deep-inelastic collisions. 68Ni deduced isomer T1/2, configuration. Other reactions discussed.

Data from this article have been entered in the XUNDL database. For more information, click here.


2001NA30      Acta Phys.Hung.N.S. 13, 121 (2001)

Y.Nagame, Y.L.Zhao, I.Nishinaka, S.Goto, M.Tanikawa, K.Tsukada, M.Asai, H.Haba, M.Sakama, S.Ichikawa, K.Sueki, H.Nakahara

Symmetric and Asymmetric Scission Properties

doi: 10.1556/APH.13.2001.1-3.13
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2001NA46      Radiochim.Acta 89, 681 (2001)

Y.Nagame, Y.L.Zhao, I.Nishinaka, S.Goto, D.Kaji, M.Tanikawa, K.Tsukada, M.Asai, H.Haba, M.Sakama, S.Ichikawa, K.Sueki, H.Kudo, H.Nakahara

Characteristics of Two Fission Modes

NUCLEAR REACTIONS 232Th, 238U, 244Pu, 248Cm(p, F), E=11-16 MeV; measured fission fragments total kinetic energies, mass yield distributions; deduced two fission modes, deformation effects.


2000AS05      Phys.Rev. C62, 054313 (2000)

M.Asai, T.Ishii, A.Makishima, I.Hossain, M.Ogawa, S.Ichikawa

Nanosecond Isomers in Neutron-Rich 67Cu and 64Co and a Fast E3 Transition in 67Cu

NUCLEAR REACTIONS 198Pt(76Ge, X), E=635 MeV; measured Eγ, Iγ(t), γγ-, (projectile-like fragment)γ-coin, angular correlations. 67Cu, 64Co deduced levels, J, π, configurations, B(M1), B(E3), isomers T1/2. Particle-octupole vibration coupling.

doi: 10.1103/PhysRevC.62.054313
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2000IS01      Phys.Rev.Lett. 84, 39 (2000)

T.Ishii, M.Asai, A.Makishima, I.Hossain, M.Ogawa, J.Hasegawa, M.Matsuda, S.Ichikawa

Core-Excited States in the Doubly Magic 68Ni and Its Neighbor 69Cu

NUCLEAR REACTIONS 198Pt(70Zn, X), E=8 MeV/nucleon; measured Eγ, Iγ, γγ-, (fragment)γ-coin.

RADIOACTIVITY 68Ni, 69Cu(IT) [from 198Pt(70Zn, X)]; measured Eγ, Iγ(t), γγ-coin. 68Ni, 69Cu deduced levels, J, π, configurations, isomeric states T1/2.

doi: 10.1103/PhysRevLett.84.39
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2000SA52      Eur.Phys.J. A 9, 303 (2000)

M.Sakama, K.Tsukada, M.Asai, S.Ichikawa, H.Haba, S.Goto, Y.Oura, I.Nishinaka, Y.Nagame, M.Shibata, Y.Kojima, K.Kawade, M.Ebihara, H.Nakahara

New Isotope 233Am

RADIOACTIVITY 233Am, 229Np(α), (EC) [from 233U(6Li, X), E=63 MeV]; measured Eα, T1/2, α-branching ratio, αα(t), (x-ray)α-coin following mass separation. Comparison with results of nearby isotopes, ISOL technique.

NUCLEAR REACTIONS 233U(6Li, X), E=63 MeV; measured α spectra, αα-coin following compound nucleus decay; deduced evidence for 233Am.

doi: 10.1007/s100500070013
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1999AS03      Phys.Rev. C59, 3060 (1999)

M.Asai, S.Ichikawa, K.Tsukada, M.Sakama, M.Shibata, Y.Kojima, A.Osa, I.Nishinaka, Y.Nagame, K.Kawade, T.Tachibana

β-Decay Half-Lives of New Neutron-Rich Isotopes 167, 168Tb and Levels in 167, 168Dy

RADIOACTIVITY 167,168Tb(β-) [from 238U(p, F)]; measured Eγ, Iγ, βγ-coin, T1/2. 167,168Dy deduced levels, J, π, configurations, rotational band features. Comparisons with neighboring nuclides.

doi: 10.1103/PhysRevC.59.3060
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Data from this article have been entered in the XUNDL database. For more information, click here.


1999MA21      Phys.Rev. C59, R2331 (1999)

A.Makishima, M.Asai, T.Ishii, I.Hossain, M.Ogawa, S.Ichikawa, M.Ishii

(νg9/2-2)8+ Isomers in 82Se48 and 80Ge48 Populated by Deep-Inelastic Collisions

NUCLEAR REACTIONS 198Pt(82Se, X)80mGe/82mSe, E=743 MeV; measured Eγ, Iγ(t), γγ-, (fragment)γ-coin. 80Ge, 82Se deduced levels, J, π, isomers T1/2, B(E2). Deep-inelastic collisions, enriched target, isomer-scope. Comparison with heavier isotones.

doi: 10.1103/PhysRevC.59.R2331
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1999SE04      J.Radioanal.Nucl.Chem. 239, 127 (1999)

T.Sekine, S.Ichikawa, A.Osa, M.Koizumi, H.Iimura, K.Tsukada, I.Nishinaka, Y.Hatsukawa, Y.Nagame, M.Asai, Y.Kojima, T.Hirose, M.Shibata, H.Yamamoto, K.Kawade

Recent Studies of Unstable Nuclei Far from Stability with the On-Line Isotope Separators of JAERI

doi: 10.1007/BF02349543
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1998HO15      Phys.Rev. C58, 1318 (1998)

I.Hossain, T.Ishii, A.Makishima, M.Asai, S.Ichikawa, M.Itoh, M.Ishii, P.Kleinheinz, M.Ogawa

Lifetime Measurement of the πg9/2 Isomer in 79As

NUCLEAR REACTIONS 198Pt(76Ge, X), E=550, 635 MeV; 198Pt(74Ge, X), E=625 MeV; measured Eγ, Iγ(t), (projectile-like fragment)γ-coin; deduced isotopic yields. 79As deduced isomeric level T1/2, B(M2), configuration. Systematics of B(M2) values in neighboring isotopes discussed.

doi: 10.1103/PhysRevC.58.1318
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1998IC02      Phys.Rev. C58, 1329 (1998)

S.Ichikawa, K.Tsukada, I.Nishinaka, Y.Hatsukawa, H.Iimura, K.Hata, Y.Nagame, M.Asai, Y.Kojima, T.Hirose, M.Shibata, K.Kawade, Y.Oura

Identification of 161Sm and 165Gd

NUCLEAR REACTIONS 238U(p, F), E=20 MeV; measured βγ-, γγ-coin following fission fragment decay; deduced evidence for 161Sm, 165Gd. Online isotope separator.

RADIOACTIVITY 161Sm, 165Gd(β-); measured T1/2.

doi: 10.1103/PhysRevC.58.1329
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1998IS11      Phys.Rev.Lett. 81, 4100 (1998)

T.Ishii, M.Asai, I.Hossain, P.Kleinheinz, M.Ogawa, A.Makishima, S.Ichikawa, M.Itoh, M.Ishii, J.Blomqvist

The (νg9/22πp3/2)19/2- Isomer in 71Cu and the Prediction of Its E2 Decay from the Shell Model

NUCLEAR REACTIONS 198Pt(76Ge, X), E=635 MeV; measured Eγ, Iγ(t), γγ-, (projectile-like fragment)γ-coin, fragment spectra; deduced evidence for 71Cu. 71Cu deduced levels, J, π, isomeric state T1/2, configuration. Deep inelastic collisions. Shell model calculations.

doi: 10.1103/PhysRevLett.81.4100
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Data from this article have been entered in the XUNDL database. For more information, click here.


1998KO06      Appl.Radiat.Isot. 49, 829 (1998)

Y.Kojima, M.Asai, A.Osa, M.Koizumi, T.Sekine, M.Shibata, H.Yamamoto, K.Kawade

Measurement of Q(EC) Values of 126La Isomers

RADIOACTIVITY 126mLa(β+) [from 94Mo(36Ar, n3p)]; measured β-spectra, βγ-coin; deduced Q(EC) values. On-line mass separator.

doi: 10.1016/S0969-8043(97)00303-5
Citations: PlumX Metrics


1998KO66      J.Phys.Soc.Jpn. 67, 3405 (1998)

Y.Kojima, M.Asai, A.Osa, M.Koizumi, T.Sekine, M.Shibata, H.Yamamoto, K.Kawade, T.Tachibana

QEC Measurement of 124, 125, 127-130La

RADIOACTIVITY 124,125,127,128,129,130La(β+), (EC) [from Mo, 29Mo(36Ar, 3pxn), E=5.4 MeV/nucleon]; measured Eγ, Iγ, β-spectra, βγ-coin, T1/2; deduced Q(EC), masses. HPGe, on-line mass separation.

ATOMIC MASSES 124,125,127,128,129,130La(β+), (EC) [from Mo, 29Mo(36Ar, 3pxn), E=5.4 MeV/nucleon]; measured Eγ, Iγ, β-spectra, βγ-coin, T1/2; deduced Q(EC), masses. HPGe, on-line mass separation.

doi: 10.1143/JPSJ.67.3405
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1998TS02      Phys.Rev. C57, 2057 (1998)

K.Tsukada, S.Ichikawa, Y.Hatsukawa, I.Nishinaka, K.Hata, Y.Nagame, Y.Oura, T.Ohyama, K.Sueki, H.Nakahara, M.Asai, Y.Kojima, T.Hirose, H.Yamamoto, K.Kawade

Half-Life of the Electron Capture Decaying Isotope 236Am

RADIOACTIVITY 236Am(EC) [from 235U(6Li, 5n)]; measured X-ray spectra, T1/2; deduced log ft. 236Am deduced ground-state J, π.

NUCLEAR REACTIONS 235U(6Li, 5n), E=46-50 MeV; measured production σ. On-line isotope separator.

doi: 10.1103/PhysRevC.57.2057
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1887.


1997AS05      Phys.Rev. C56, 3045 (1997)

M.Asai, T.Sekine, A.Osa, M.Koizumi, Y.Kojima, M.Shibata, H.Yamamoto, K.Kawade

Energy Systematics of Low-Lying 0+ States in Neutron-Deficient Ba Nuclei

RADIOACTIVITY 128,130La, 130Pr(β+)(EC) [from Mo(36Ar, X), E=195 MeV]; 124,126La(β+)(EC) [from 92,94Mo(36Ar, X), E=195 MeV]; measured Eγ, Iγ, γγ(θ), γ(t); deduced low-spin isomers, β-decay branching ratios. 124,126,128,130Ba, 130Ce deduced levels, J, π. Model calculations, other nuclei compared. ISOL.

doi: 10.1103/PhysRevC.56.3045
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1997AS07      Nucl.Instrum.Methods Phys.Res. A398, 265 (1997)

M.Asai, K.Kawade, H.Yamamoto, A.Osa, M.Koizumi, T.Sekine

A Five-HPGe Detector System for γ-γ Angular Correlation Measurements for Mass-Separated Short-Lived Nuclei

RADIOACTIVITY 152Eu, 126La(β+), (EC); measured Eγ, Iγ, γγ(θ). 152Sm, 152Gd, 126Ba deduced transitions angular correlations parameters.

doi: 10.1016/S0168-9002(97)00807-3
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1996AS05      J.Phys.Soc.Jpn. 65, 1135 (1996)

M.Asai, K.Tsukada, S.Ichikawa, A.Osa, Y.Kojima, M.Shibata, H.Yamamoto, K.Kawade, N.Shinohara, Y.Nagame, H.Iimura, Y.Hatsukawa, I.Nishinaka

Identification of a New Isotope 166Tb

RADIOACTIVITY 166Tb(β-) [from 238U(p, F)]; measured Eγ, Iγ, βγ-, γγ-coin, T1/2; deduced log ft. 166Dy deduced levels, β-feeding intensity. Mass separator.

NUCLEAR REACTIONS 238U(p, F), E=16 MeV; measured (fragment)γ-coin; deduced evidence for 166Tb. Mass separator.

doi: 10.1143/JPSJ.65.1135
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1996IC01      Nucl.Instrum.Methods Phys.Res. A374, 330 (1996)

S.Ichikawa, M.Asai, K.Tsukada, A.Osa, T.Ikuta, N.Shinohara, H.Iimura, Y.Nagame, Y.Hatsukawa, I.Nishinaka, K.Kawade, H.Yamamoto, M.Shibata, Y.Kojima

Mass Separation of Neutron-Rich Isotopes using a Gas-Jet Coupled Thermal Ion Source

NUCLEAR REACTIONS 238U(p, F), E=15 MeV; measured Eγ, Iγ following fission fragment decay, fragment yield vs mass number; deduced evidence for 166Tb; deduced production σ, reaction yields for 140,144Cs, 144Ba, 144,148La, 148Pr, 152Nd, 156Pm, 160Eu. Isotope separator plus gas-jet coupled thermal ion source.

RADIOACTIVITY 166Tb(β-) [from 238U(p, F), E=15 MeV]; measured Eγ, Iγ, T1/2. Monoxide ions from gas-jet coupled thermal ion source used in conjunction with isotope separator.

doi: 10.1016/0168-9002(96)00086-1
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1853.


1996MA80      Nucl.Instrum.Methods Phys.Res. A376, 335 (1996)

K.Maruyama, G.Garino, S.Kato, M.Koike, Y.Murata, M.Mutou, K.Niki, K.Yoshida, M.Asai, S.Asano, I.Endo, S.Endo, M.Harada, S.Kasai, K.Miyamoto, Y.Sumi, A.Sasaki, K.Hossain, Z.Papandreou, H.Hasai, K.Iwatani, A.Leone, R.Perrino, Y.Wada, T.Maki, F.Farzanpay, G.M.Huber, M.Iurescu, G.J.Lolos, A.Weinerman, A.Hisadomi, H.Itoh, S.Maruo, H.Murooka, R.Naridomi, T.Ogata, J.C.Kim, B.Lasiuk, C.Rangacharyulu, O.Konno, A.Shinozaki, T.Terasawa, H.Yamazaki, K.Maeda, T.Suda, H.Shimizu, T.Emura, H.Hirosawa, K.Niwa, H.Miyamoto, K.Nagata, H.Yamashita

The Large-Acceptance Spectrometer TAGX for Photoreaction Studies at the 1.3-GeV Tokyo Electron Synchrotron

NUCLEAR REACTIONS 4He(γ, X), E=1.3 GeV; compiled, reviewed ppn production associated missing mass distribution data, other aspects. Large acceptance spectrometer TAGX.

doi: 10.1016/0168-9002(96)00244-6
Citations: PlumX Metrics


1995OS03      Nucl.Phys. A588, 185c (1995)

A.Osa, M.Asai, M.Koizumi, T.Sekine, S.Ichikawa, Y.Kojima, H.Yamamoto, K.Kawade

β+ Decay of Unstable Presodymium Isotopes: 127Pr, 126Pr and the New Isotope 125Pr

RADIOACTIVITY 127Pr(β+) [from 94Mo(36Ar, X), E=5.4 MeV/nucleon]; 125,126Pr(β+) [from 92Mo(36Ar, X), E=5.4 MeV/nucleon]; measured Eγ, Iγ, γγ-coin. 125Pr deduced T1/2. 127,125,126Ce deduced levels, Iγ.

doi: 10.1016/0375-9474(95)00137-P
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1994SE13      Z.Phys. A349, 143 (1994)

T.Sekine, A.Osa, M.Koizumi, S.Ichikawa, M.Asai, H.Yamamoto, K.Kawade

Decay of the New Isotope 127Pr

NUCLEAR REACTIONS 94Mo(36Ar, 2np), E=4.9 MeV/nucleon; measured Eγ, Iγ, βγ(t), γγ-coin; deduced evidence for 127Pr.

RADIOACTIVITY 127Pr(β+), (EC) [from 94Mo(36Ar, 2np), E=4.9 MeV/nucleon]; measured Eγ, Iγ, βγ(t), γγ-coin; deduced T1/2. 127Ce deduced levels.

doi: 10.1007/BF01291172
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1993AS01      Z.Phys. A344, 335 (1993)

M.Asai, I.Endo, M.Harada, S.Kasai, K.Niki, Y.Sumi, S.Kato, K.Maruyama, Y.Murata, M.Muto, K.Yoshida, K.Iwatani, H.Hasai, H.Ito, T.Maki, C.Rangacharyulu, H.Shimizu, Y.Wada, and the TAGX Collaboration

The Reaction γ + d → π+ + π- + p + n between 570 and 850 MeV and Δ++ Δ- Production

NUCLEAR REACTIONS 2H(γ, π+π-), E=570-850 MeV; measured missing mass distributions; deduced different mechanisms contributions. Kinematically complete experiment.

doi: 10.1007/BF01303029
Citations: PlumX Metrics


1993IK02      J.Nucl.Sci.Technol.(Tokyo) 30, 967 (1993)

Y.Ikeda, C.Konno, K.Kosako, M.Asai, K.Kawade, H.Maekawa

Measurement of the 93Nb(n, n')93mNb Reaction Cross Section at 14.5 and 14.9 MeV

NUCLEAR REACTIONS 93Nb(n, n'), E=14.5, 14.9 MeV; measured σ. Activation technique.

doi: 10.1080/18811248.1993.9734576
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23009.


1993SH23      Appl.Radiat.Isot. 44, 923 (1993)

M.Shibata, M.Asai, T.Ikuta, H.Yamamoto, J.Ruan, K.Okano, K.Aoki, K.Kawade

Decay Scheme of Mass-Separated 152Nd

RADIOACTIVITY 152Nd(β-) [from 235U(n, F), E=reactor]; measured Eγ, Iγ, I(ce), γγ-coin. 152Pm deduced levels, γ-multipolarity, ICC.

doi: 10.1016/0969-8043(93)90046-D
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1990AS03      Phys.Rev. C42, 837 (1990)

M.Asai, I.Endo, M.Harada, S.Kasai, K.Niki, Y.Sumi, S.Kato, K.Maruyama, Y.Murata, M.Muto, K.Yoshida, K.Iwatani, H.Hasai, H.Ito, T.Maki, C.Rangacharyulu, H.Shimizu, Y.Wada, and the TAGX Collaboration

Total Cross Section for the γd → π-pp Reaction between 380 and 840 MeV

NUCLEAR REACTIONS 2H(γ, π-p), E=380-840 MeV; measured σ(E); deduced dibaryon resonance upper limit. Tagged photon beam, large-acceptance magnetic spectrometer.

doi: 10.1103/PhysRevC.42.837
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1987AS02      Phys.Lett. 187B, 249 (1987)

M.Asai, K.Baba, T.Emura, A.Imanishi, S.Kasai, Y.Kim, T.Miyachi, Y.Morita, M.Nishimura, Y.Sumi, K.Takahashi, H.Tezuka, Y.Wada

Measurement of the Cross Section for γd → π0d at 140° ≤ θ(CM) ≤ 156°

NUCLEAR REACTIONS 2H(γ, π0), E=500-1000 MeV; measured σ(Eγ, θπ), σ(θπ). Liquid target.

doi: 10.1016/0370-2693(87)91090-2
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