NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = D.Kaji Found 42 matches. 2023NI04 Phys.Rev.Lett. 130, 132502 (2023) T.Niwase, Y.X.Watanabe, Y.Hirayama, M.Mukai, P.Schury, A.N.Andreyev, T.Hashimoto, S.Iimura, H.Ishiyama, Y.Ito, S.C.Jeong, D.Kaji, S.Kimura, H.Miyatake, K.Morimoto, J.-Y.Moon, M.Oyaizu, M.Rosenbusch, A.Taniguchi, M.Wada Discovery of New Isotope 241U and Systematic High-Precision Atomic Mass Measurements of Neutron-Rich Pa-Pu Nuclei Produced via Multinucleon Transfer Reactions NUCLEAR REACTIONS 198Pt(238U, X)235U/236U/237U/238U/239U/240U/241U/242U/235Pa/236Pa/237Pa/239Np/240Np/241Np/239Pu/240Pu/241Pu/242Pu, E=10.75 MeV/nucleon; measured reaction products, TOF. 241U; deduced new isotope production. The KEK Isotope Separation System (KISS) for the nuclear spectroscopy of nuclides produced via MNT reactions, installed at the RIKEN Nishina Center. ATOMIC MASSES 235,236,237,238,239,240,241,242U, 235,236,237Pa, 239,240,241Np, 239,240,241,242Pu; measured frequencies (the first excitation step laser wavelength), TOF; deduced mass excesses. Comparison with AME2020 evaluation.
doi: 10.1103/PhysRevLett.130.132502
2021NI08 Phys.Rev. C 104, 044617 (2021) T.Niwase, M.Wada, P.Schury, P.Brionnet, S.D.Chen, T.Hashimoto, H.Haba, Y.Hirayama, D.S.Hou, S.Iimura, H.Ishiyama, S.Ishizawa, Y.Ito, D.Kaji, S.Kimura, J.Liu, H.Miyatake, J.Y.Moon, K.Morimoto, K.Morita, D.Nagae, M.Rosenbusch, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik, W.Xian, S.X.Yan α-decay-correlated mass measurement of 206, 207g, mRa using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system ATOMIC MASSES 206,207,207mRa; measured time-of-flight spectra by α-decay-correlated mass spectroscopy using multireflection time-of-flight mass spectrograph (MRTOF-MS) system, with an α-TOF detector at SHE-Mass-II facility of RIBF-RIKEN; deduced mass excesses, and compared with evaluated data in AME2020. 207mRa; deduced excitation energy of the isomer, J, π. 206,207,207mRa isotopes produced in 159Tb(51V, X), E=306 MeV, followed by separation of evaporation residues using recoil ion separator GARIS-II at RIKEN. RADIOACTIVITY 206,207mRa(α)[from 159Tb(51V, X), E=306 MeV at RIBF-RIKEN]; measured Eα, Iα, T1/2 of decays of 206Ra and 207mRa, excitation energy of the isomer; deduced α-reduced width, configuration. Systematics of spins, parities, Eα, T1/2, α-branching ratios, reduced α widths for 203,203m,205,205m,207,207mRa. 198,199Po, 202,203At, 202,203Rn, 206,207Fr, 207Ra; observed α spectra from decays.
doi: 10.1103/PhysRevC.104.044617
2021SC14 Phys.Rev. C 104, L021304 (2021) P.Schury, T.Niwase, M.Wada, P.Brionnet, S.Chen, T.Hashimoto, H.Haba, Y.Hirayama, D.S.Hou, S.Iimura, H.Ishiyama, S.Ishizawa, Y.Ito, D.Kaji, S.Kimura, H.Koura, J.J.Liu, H.Miyatake, J.-Y.Moon, K.Morimoto, K.Morita, D.Nagae, M.Rosenbusch, A.Takamine, Y.X.Watanabe, H.Wollnik, W.Xian, S.X.Yan First high-precision direct determination of the atomic mass of a superheavy nuclide ATOMIC MASSES 257Db; measured Eα, time-of flight, distribution of time-of-flight (ToF)-correlated α-decay events using multireflection time-of-flight mass spectrograph (MRTOF-MS) at RIKEN Ring Cyclotron facility; deduced A/q and mass excess for each of the 11 observed correlated events assigned to 257Db. Comparison with AME2016 evaluated data. 257Db isotope produced in 208Pb(51V, 2n), E=306 MeV reaction, followed by separation of fragments using GARIS-II separator.
doi: 10.1103/PhysRevC.104.L021304
2020HA27 Phys.Rev. C 102, 024625 (2020) H.Haba, F.Fan, D.Kaji, Y.Kasamatsu, H.Kikunaga, Y.Komori, N.Kondo, H.Kudo, K.Morimoto, K.Morita, M.Murakami, K.Nishio, J.P.Omtvedt, K.Ooe, Z.Qin, D.Sato, N.Sato, T.K.Sato, Y.Shigekawa, A.Shinohara, M.Takeyama, T.Tanaka, A.Toyoshima, K.Tsukada, Y.Wakabayashi, Y.Wang, S.Wulff, S.Yamaki, S.Yano, Y.Yasuda, T.Yokokita Production of 266Bh in the 248Cm(23Na, 5n)266Bh reaction and its decay properties RADIOACTIVITY 266,267Bh(α)[from 248Cm(23Na, 5n), (23Na, 4n), E=125.9, 130.6, 135.3 MeV]; 262Db(α), (SF)[from 266Bh α decay]; 263Db(EC), (α), (SF)[from 267Bh α decay]; 263Rf(SF)[from 263Db EC decay]; 258Lr(α), (EC)[from 262Db α decay]; 259Lr(α), (SF)[from 263Db α decay]; 258No(SF)[from 258Lr(EC); measured Eα, αα-, ααα- and α(SF)-correlations for 32 observed events using rotating wheel apparatus MANON and gas-jet transport system coupled to gas-filled recoil ion separator GARIS at RIKEN; deduced decay times, half-lives, decay branching ratios, production cross sections for 266Bh and 267Bh. Comparison with previous experimental results for half-lives and branching ratios for decay modes. NUCLEAR REACTIONS 248Cm(23Na, 5n), (23Na, 4n), E=125.9, 130.6, 135.3 MeV; measured reaction products, σ(E) at RIKEN. Comparison with HIVAP calculations, and with previous experimental results.
doi: 10.1103/PhysRevC.102.024625
2020TA02 Phys.Rev.Lett. 124, 052502 (2020) T.Tanaka, K.Morita, K.Morimoto, D.Kaji, H.Haba, R.A.Boll, N.T.Brewer, S.Van Cleve, D.J.Dean, S.Ishizawa, Y.Ito, Y.Komori, K.Nishio, T.Niwase, B.C.Rasco, J.B.Roberto, K.P.Rykaczewski, H.Sakai, D.W.Stracener, K.Hagino Study of Quasielastic Barrier Distributions as a Step towards the Synthesis of Superheavy Elements with Hot Fusion Reactions NUCLEAR REACTIONS 248Cm(22Ne, X), (26Mg, X), 238U(48Ca, X), E(cm)=165.1, 203.7 MeV; measured reaction products; deduced σ. Comparison with available data.
doi: 10.1103/PhysRevLett.124.052502
2018IT04 Phys.Rev.Lett. 120, 152501 (2018) Y.Ito, P.Schury, M.Wada, F.Arai, H.Haba, Y.Hirayama, S.Ishizawa, D.Kaji, S.Kimura, H.Koura, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morimoto, K.Morita, M.Mukai, I.Murray, T.Niwase, K.Okada, A.Ozawa, M.Rosenbusch, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik, S.Yamaki First Direct Mass Measurements of Nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph NUCLEAR REACTIONS 232Th(19F, 5n)246Es, E=99.6, 103 MeV;238U(18O, 5n)251Fm, E=93.9 MeV; 203Tl(48Ca, 2n)249Md, E=215 MeV; 205Tl(48Ca, 3n)250Md, E=223 MeV; 205Tl(48Ca, 2n)251Md, E=215 MeV; 238U(19F, 5n)252md, E=98.6 MeV; 208Pb(48Ca, 2n)254No, E=219 MeV; measured reaction products, TOF; deduced mass excesses. Comparison with available data. ATOMIC MASSES 253,254Lr, 257,258Db, 261,262Bh, 266Mt; analyzed available data; deduced mass excesses.
doi: 10.1103/PhysRevLett.120.152501
2018KI21 Int.J. Mass Spectrom. 430, 134 (2018) S.Kimura, Y.Ito, D.Kaji, P.Schury, M.Wada, H.Haba, T.Hashimoto, Y.Hirayama, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morimoto, M.Mukai, I.Murray, A.Ozawa, M.Rosenbusch, H.Schatz, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph ATOMIC MASSES 63Cu, 64,65,66Zn, 65Ga, 65,66,67Ge, 67As, 78,81Br, 80Rb, 79Sr; measured frequencies, TOF; deduced masses, new mass excess values. Comparison with AME16 evaluations. NUCLEAR REACTIONS S(36Ar, X)63Cu/64Zn/65Zn/66Zn/65Ga/65Ge/66Ge/67Ge/67As/78Br/81Br/80Rb/79Sr, E=3.30 MeV/nucleon; measured reaction products; deduced σ. Comparison with theoretical calculations of fusion-evaporation reactions.
doi: 10.1016/j.ijms.2018.05.001
2018RO14 Phys.Rev. C 97, 064306 (2018) M.Rosenbusch, Y.Ito, P.Schury, M.Wada, D.Kaji, K.Morimoto, H.Haba, S.Kimura, H.Koura, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morita, I.Murray, T.Niwase, A.Ozawa, M.Reponen, A.Takamine, T.Tanaka, H.Wollnik New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes ATOMIC MASSES 210,211,212,214Ra, 210,211,212,213,214Ac; measured time of flight, and mass excess using multireflection time-of-flight mass spectrograph (MRTOF-MS) at superheavy element (SHE) mass facility of RIKEN-KEK, and using gas-filled recoil ion separator GARIS-II at RIKEN. Comparison with values from AME-2016. Ra and Ac isotopes produced in 169Tm(48Ca, X), E=5, 6 MeV/nucleon reaction at RIKEN. Z=82-92, N=121-129; systematics of S(2n) values.
doi: 10.1103/PhysRevC.97.064306
2017KA31 J.Phys.Soc.Jpn. 86, 085001 (2017) D.Kaji, K.Morimoto, H.Haba, Y.Wakabayashi, M.Takeyama, S.Yamaki, Y.Komori, S.Yanou, S.-i.Goto, K.Morita Decay Measurement of 283Cn Produced in the 238U(48Ca, 3n) Reaction Using GARIS-II NUCLEAR REACTIONS 238U(48Ca, 3n), E=251.8 MeV; measured reaction products; deduced σ. Comparison with available data. RADIOACTIVITY 283Cn(α), (SF), 279Ds(SF); measured decay products, Eα, Iα; deduced T1/2. Comparison with available data.
doi: 10.7566/JPSJ.86.085001
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
2017SC02 Phys.Rev. C 95, 011305 (2017) P.Schury, M.Wada, Y.Ito, D.Kaji, F.Arai, M.MacCormick, I.Murray, H.Haba, S.Jeong, S.Kimura, H.Koura, H.Miyatake, K.Morimoto, K.Morita, A.Ozawa, M.Rosenbusch, M.Reponen, P.-A.Soderstrom, A.Takamine, T.Tanaka, H.Wollnik First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reactions: Toward identification of superheavy elements via mass spectroscopy ATOMIC MASSES 204,205,206Fr, 204,205,206Rn, 204,205,206At, 204,205Po, 205Bi; measured time-of-flight spectra, precise atomic masses with reference to that of 205Fr using GARIS-II recoil ion separator GARIS-II and multireflection time-of-flight mass spectrographs (MRTOF-MS) at RILAC-RIKEN facility. Isotopes produced in 165Ho, 169Tm(40Ar, X), E=4.825, 5.16 MeV/nucleon. Comparison with AME-2012 values, and previous experimental values.
doi: 10.1103/PhysRevC.95.011305
2017WI13 Phys.Rev. C 96, 044315 (2017) G.L.Wilson, M.Takeyama, A.N.Andreyev, B.Andel, S.Antalic, W.N.Catford, L.Ghys, H.Haba, F.P.Hessberger, M.Huang, D.Kaji, Z.Kalaninova, K.Morimoto, K.Morita, M.Murakami, K.Nishio, R.Orlandi, A.G.Smith, K.Tanaka, Y.Wakabayashi, S.Yamaki β-delayed fission of 230Am RADIOACTIVITY 230Am(β+F)[from 207Pb(27Al, 4n), E=145 MeV]; measured fission fragments, double-fold fission fragment coincidences, total energy spectrum, α-α correlations using the GARIS recoil-ion separator at RIKEN. Analyzed TKE(230Pu); deduced T1/2 for 230Am, lower limit of β-delayed fission probability of 230Am. Systematics of β+-delayed fission probabilities for 230,232,234Am, 240,242,244,246,248Es, 236,238,240Bk nuclei. 230Am found to have the highest lower limit for β+-delayed fission probability so far among all the known nuclei decaying by this mode.
doi: 10.1103/PhysRevC.96.044315
2016KA13 J.Phys.Soc.Jpn. 85, 015002 (2016) D.Kaji, K.Morimoto, H.Haba, E.Ideguchi, H.Koura, K.Morita Decay Properties of New Isotopes 234Bk and 230Am, and Even-Even Nuclides 234Cm and 230Pu RADIOACTIVITY 234Bk(α), (EC) [from 197Au(40Ar, 3n)234Bk, E=89.5 MeV]; measured decay products, Eα, Iα; deduced T1/2. Comparison with available data.
doi: 10.7566/JPSJ.85.015002
2014HA04 Phys.Rev. C 89, 024618 (2014) H.Haba, M.Huang, D.Kaji, J.Kanaya, Y.Kudou, K.Morimoto, K.Morita, M.Murakami, K.Ozeki, R.Sakai, T.Sumita, Y.Wakabayashi, A.Yoneda, Y.Kasamatsu, Y.Kikutani, Y.Komori, K.Nakamura, A.Shinohara, H.Kikunaga, H.Kudo, K.Nishio, A.Toyoshima, K.Tsukada Production of 262Db in the 248Cm(19F, 5n)262Db reaction and decay properties of 262Db and 258Lr NUCLEAR REACTIONS 248Cm(19F, 5n)262Db, E=97.4, 103.1 MeV; measured production σ of 262Db, correlated α-α and α-SF decay chains using rotating wheel apparatus MANON for α and SF spectrometry at RIKEN facility. Comparison with HIVAP model calculations, and with previous experimental and theoretical results. No observation of 263Db and 259Lr correlated chains through possible 248Cm(19F, 4n) reaction channel. RADIOACTIVITY 262Db(α), (SF)[from 248Cm(19F, 5n), E=97.4, 103.1 MeV]; 258Lr(α), (EC)[from 262Db α decay]; measured Eα, Iα, half-lives, α-α, α-SF correlations, branching ratios for α, SF and EC modes. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.89.024618
2013MU08 Phys.Rev. C 88, 024618 (2013) M.Murakami, S.Goto, H.Murayama, T.Kojima, H.Kudo, D.Kaji, K.Morimoto, H.Haba, Y.Kudou, T.Sumita, R.Sakai, A.Yoneda, K.Morita, Y.Kasamatsu, H.Kikunaga, T.K.Sato Excitation functions for production of Rf isotopes in the 248Cm + 18O reaction NUCLEAR REACTIONS 248Cm(18O, xn)260Rf/261Rf/261mRf/262Rf, E=88.2, 90.2, 94.8, 101.3 MeV; measured reaction products, Eα, Iα, production σ(E), half-lives using GARIS separator at RIKEN Heavy-Ion Linear Accelerator facility. Beam on-off method. Comparison with previous experimental data, and with theoretical predictions using HIVAP computer code. RADIOACTIVITY 260,261,261m,262Rf(α), (SF)[from 248Cm(18O, xn), E=88.2, 90.2, 94.8, 101.3 MeV]; 257No(α)[from 261Rf α decay]; measured Eα, Iα, α-α correlations, SF-events, half-lives; deduced excitation functions.
doi: 10.1103/PhysRevC.88.024618
2013SU04 J.Phys.Soc.Jpn. 82, 024202 (2013) T.Sumita, K.Morimoto, D.Kaji, H.Haba, K.Ozeki, R.Sakai, A.Yoneda, A.Yoshida, H.Hasebe, K.Katori, N.Sato, Y.Wakabayashi, S.-i.Mitsuoka, S.-i.Goto, M.Murakami, Y.Kariya, F.Tokanai, K.Mayama, M.Takeyama, T.Moriya, E.Ideguchi, T.Yamaguchi, H.Kikunaga, J.Chiba, K.Morita New Result on the Production of 277Cn by the 208Pb + 70Zn Reaction NUCLEAR REACTIONS 208Pb(70Zn, n)277Cn, E=347.5, 351.5, 355.5 MeV; 209Bi(70Zn, n)278Nh, E=347.5, 351.5, 355.5 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with similar nuclei. RADIOACTIVITY 277Cn, 273Ds, 269Hs, 265Sg, 261Rf, 257No(α); measured decay products, Eα, Iα; deduced T1/2. Comparison with available data.
doi: 10.7566/JPSJ.82.024202
2012HA05 Phys.Rev. C 85, 024611 (2012) H.Haba, D.Kaji, Y.Kudou, K.Morimoto, K.Morita, K.Ozeki, R.Sakai, T.Sumita, A.Yoneda, Y.Kasamatsu, Y.Komori, A.Shinohara, H.Kikunaga, H.Kudo, K.Nishio, K.Ooe, N.Sato, K.Tsukada Production of 265Sg in the 248Cm(22Ne, 5n)265Sg reaction and decay properties of two isomeric states in 265Sg NUCLEAR REACTIONS 248Cm(22Ne, 5n)265Sg, E=228.8 MeV; measured evaporation residues, excitation function, production cross sections for isomers, αα, ααα and α(SF) correlations using RIKEN gas-filled recoil-ion separator GARIS. Comparison of cross sections with other 5n evaporation channel reactions, and HIVAP calculations. RADIOACTIVITY 265,265mSg[from 248Cm(22Ne, 5n), E=228.8 MeV]; 261Rf, 261mRf(α), (SF)[from 265Sg α decay]; measured E(α), E(SF), I(α), T1/2, αα-coin, α(fragment) coin; deduced α and SF decay branching ratios from data for 79 α-α decay chains. 214Po, 252,253,254,255Fm, 257No(α); measured Eα.
doi: 10.1103/PhysRevC.85.024611
2012MO25 J.Phys.Soc.Jpn. 81, 103201 (2012) K.Morita, K.Morimoto, D.Kaji, H.Haba, K.Ozeki, Y.Kudou, T.Sumita, Y.Wakabayashi, A.Yoneda, K.Tanaka, S.Yamaki, R.Sakai, T.Akiyama, S.-i.Goto, H.Hasebe, M.Huang, T.Huang, E.Ideguchi, Y.Kasamatsu, K.Katori, Y.Kariya, H.Kikunaga, H.Koura, H.Kudo, A.Mashiko, K.Mayama, S.-ic.Mitsuoka, T.Moriya, M.Murakami, H.Murayama, S.Namai, A.Ozawa, N.Sato, K.Sueki, M.Takeyama, F.Tokanai, T.Yamaguchi, A.Yoshida New Result in the Production and Decay of an Isotope, 278113, of the 113th Element NUCLEAR REACTIONS 209Bi(70Zn, X)278Nh, E=349 MeV; measured reaction products, Eα, Iα. 274Rg, 270Mt, 266Bh, 262Db, 258Lr; deduced T1/2. Comparison with available data.
doi: 10.1143/JPSJ.81.103201
2011BE57 J.Phys.:Conf.Ser. 312, 092017 (2011) J.S.Berryman, R.M.Clark, K.E.Gregorich, J.M.Allmond, D.L.Bleuel, R.J.Cooper, M.Cromaz, M.A.Deleplanque, I.Dragojevic, J.Dvorak, P.A.Ellison, P.Fallon, M.A.Garcia, J.M.Gates, S.Gros, O.Gothe, H.B.Jeppesen, D.Kaji, I.Y.Lee, A.O.Macchiavelli, K.Morimoto, H.Nitsche, S.Paschalis, M.Petri, J.Qian, L.Stavsetra, F.S.Stephens, M.A.Stoyer, T.J.Ross, H.Watanabe, M.Wiedeking Nuclear spectroscopy of the heaviest elements: studies of 254No, 257Rf, and 261Sg NUCLEAR REACTIONS 208Pb(48Ca, 2n), E=221 MeV;208Pb(50Ti, n), E=238 MeV;208Pb(54Cr, n), E=261 MeV; measured Eγ, Iγ using HPGe, recoils using MWPC, Eα, Iα, E(e), I(e), eγ-coin. 254No, 257Rf deduced levels, J, π, γ transitions, isomeric transition T1/2, bands, 257Rf α-decay T1/2, 254No g-factor.
doi: 10.1088/1742-6596/312/9/092017
2011HA13 Phys.Rev. C 83, 034602 (2011) H.Haba, D.Kaji, H.Kikunaga, Y.Kudou, K.Morimoto, K.Morita, K.Ozeki, T.Sumita, A.Yoneda, Y.Kasamatsu, Y.Komori, K.Ooe, A.Shinohara Production and decay properties of the 1.9-s isomeric state in 261Rf RADIOACTIVITY 261Rf, 261mRf(α), (SF)[from 248Cm(18O, 5n), E=93.1, 95.1 MeV]; measured Eα, Iα, α-α correlations, SF-events, α and SF branching ratios, half-lives, σ of 261Rf g.s. and 261Rf isomer. 257No(α); measured Eα, half-life. 214Po, 254Fm, 255,259Rf; measured Eα. NUCLEAR REACTIONS 248Cm(18O, 5n)261Rf, E=93.1, 95.1 MeV; measured σ, isomer σ ratio, half-lives.
doi: 10.1103/PhysRevC.83.034602
2011SA41 J.Phys.Soc.Jpn. 80, 094201 (2011) N.Sato, H.Haba, T.Ichikawa, D.Kaji, Y.Kudou, K.Morimoto, K.Morita, K.Ozeki, T.Sumita, A.Yoneda, E.Ideguchi, H.Koura, A.Ozawa, T.Shinozuka, T.Yamaguchi, A.Yoshida Production and Decay Properties of 264Hs and 265Hs NUCLEAR REACTIONS 208Pb(58Fe, 2n), 207,208Pb(58Fe, n), E(cm)=200-227 MeV; measured reaction products; deduced σ. RADIOACTIVITY 264,265Hs(α), (SF) [from 208Pb(58Fe, 2n), 207,208Pb(58Fe, n), E(cm)=200-227 MeV]; measured Eα, Iα; deduced α-particle energies, α and spontaneous fission branches, Q-values, T1/2.
doi: 10.1143/JPSJ.80.094201
2010CL01 Phys.Lett. B 690, 19 (2010) R.M.Clark, K.E.Gregorich, J.S.Berryman, M.N.Ali, J.M.Allmond, C.W.Beausang, M.Cromaz, M.A.Deleplanque, I.Dragojevic, J.Dvorak, P.A.Ellison, P.Fallon, M.A.Garcia, J.M.Gates, S.Gros, H.B.Jeppesen, D.Kaji, I.Y.Lee, A.O.Macchiavelli, K.Morimoto, H.Nitsche, S.Paschalis, M.Petri, L.Stavsetra, F.S.Stephens, H.Watanabe, M.Wiedeking High-K multi-quasiparticle states in 254No RADIOACTIVITY 254No(IT) [from 208Pb(48Ca, 2n), E=221 MeV]; measured Eγ, Iγ, γ-particle-coin.; deduced J, π, level energies, rotational bands, decay of isomer state.
doi: 10.1016/j.physletb.2010.04.079
2009HA49 Chem.Lett. 38, 426 (2009) H.Haba, D.Kaji, Y.Komori, Y.Kudou, K.Morimoto, K.Morita, K.Ooe, K.Ozeki, N.Sato, A.Shinohara, A.Yoneda RIKEN Gas-filled Recoil Ion Separator (GARIS) as a Promising Interface for Superheavy Element Chemistry-Production of Element 104, 261Rf, Using the GARIS/Gas-jet System RADIOACTIVITY 261Rf, 257No(α) [from 248Cm(18O, 5n)261Rf, E=95.5 MeV]; measured decay products, Eα, Iα; deduced 261Rf for chemical studies in the 248Cm-based hot fusion reaction using the gas-jet transport system coupled to gas-filled recoil ion separator GARIS.
doi: 10.1246/cl.2009.426
2009MO12 J.Phys.Soc.Jpn. 78, 064201 (2009) K.Morita, K.Morimoto, D.Kaji, H.Haba, K.Ozeki, Y.Kudou, N.Sato, T.Sumita, A.Yoneda, T.Ichikawa, Y.Fujimori, S.Goto, E.Ideguchi, Y.Kasamatsu, K.Katori, Y.Komori, H.Koura, H.Kudo, K.Ooe, A.Ozawa, F.Tokanai, K.Tsukada, T.Yamaguchi, A.Yoshida Decay Properties of 266Bh and 262Db Produced in the 248Cm + 23Na Reaction NUCLEAR REACTIONS 248Cm(23Na, 4n), (23Na, 5n), E=126, 130, 132 MeV; measured yields. RADIOACTIVITY 266Bh(α); measured Eα, Iα.
doi: 10.1143/JPSJ.78.064201
2008HA41 J.Nucl.Radiochem.Sci. 9, 27 (2008) H.Haba, H.Kikunaga, D.Kaji, T.Akiyama, K.Morimoto, K.Morita, T.Nanri, K.Ooe, N.Sato, A.Shinohara, D.Suzki, T.Takabe, I.Yamazaki, A.Yokoyama, A.Yoneda Performance of the Gas-jet Transport System Coupled to the RIKEN Gas-filled Recoil Ion Separator GARIS for the 238U(22Ne, 5n)255No Reaction RADIOACTIVITY 255No(α), (EC), 255Md(EC) [from 238U(22Ne, 5n)255No, E=113.8 MeV]; measured decay products, Eα, Iα; deduced α-particle energies, T1/2. Comparison with available data. The gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator GARIS.
doi: 10.14494/jnrs.9.27
2007HA29 Eur.Phys.J. D 45, 81 (2007) H.Haba, T.Akiyama, D.Kaji, H.Kikunaga, T.Kuribayashi, K.Morimoto, K.Morita, K.Ooe, N.Sato, A.Shinohara, T.Takabe, Y.Tashiro, A.Toyoshima, A.Yoneda, T.Yoshimura Startup of superheavy element chemistry at RIKEN NUCLEAR REACTIONS 169Tm(40Ar, 3n), E=170 MeV; 208Pb(40Ar, 3n), E=199 MeV; 238U(22Ne, 5n), E=105.9-120.9 MeV; 248Cm(18O, 5n), E=94.4 MeV; measured Eα, Iα, superheavy element production yields using a gas filled recoil separator.
doi: 10.1140/epjd/e2007-00135-4
2007HA58 J.Nucl.Radiochem.Sci. 8, 55 (2007) H.Haba, D.Kaji, H.Kikunaga, T.Akiyama, N.Sato, K.Morimoto, A.Yoneda, K.Morita, T.Takabe, A.Shinohara Development of Gas-jet Transport System Coupled to the RIKEN Gas-filled Recoil Ion Separator GARIS for Superheavy Element Chemistry RADIOACTIVITY 206Fr, 245Fm [from 169Tm, 208Pb(40Ar, 3n), E not given]; measured decay products, Eα, Iα; deduced α-particle energies, T1/2. Comparison with available data. The gas-filled recoil ion separator GARIS at the RIKEN Linear Accelerator.
doi: 10.14494/jnrs2000.8.55
2007MO09 J.Phys.Soc.Jpn. 76, 043201 (2007) K.Morita, K.Morimoto, D.Kaji, T.Akiyama, S.Goto, H.Haba, E.Ideguchi, K.Katori, H.Koura, H.Kudo, T.Ohnishi, A.Ozawa, T.Suda, K.Sueki, F.Tokanai, T.Yamaguchi, A.Yoneda, A.Yoshida Experiment on Synthesis of an Isotope 277112 by 208Pb + 70Zn Reaction NUCLEAR REACTIONS 208Pb(70Zn, n), E=349.5 MeV; measured delayed Eα, αα-, (recoil)α-coin; deduced production σ. Gas-filled separator. RADIOACTIVITY 277Cn, 273Ds, 269Hs, 265Sg(α) [from 208Pb(70Zn, n) and subsequent decay]; measured Eα, T1/2. Gas-filled separator.
doi: 10.1143/JPSJ.76.043201
2007MO43 J.Phys.Soc.Jpn. 76, 045001 (2007) K.Morita, K.Morimoto, D.Kaji, T.Akiyama, S.-i.Goto, H.Haba, E.Ideguchi, K.Katori, H.Koura, H.Kikunaga, H.Kudo, T.Ohnishi, A.Ozawa, N.Sato, T.Suda, K.Sueki, F.Tokanai, T.Yamaguchi, A.Yoneda, A.Yoshida Observation of Second Decay Chain from 278113 RADIOACTIVITY 278Nh, 274Rg, 270Mt, 266Bh, 262Db(α) [from 209Bi(70Zn, n)278Nh, E=353 MeV]; measured decay products, Eα, Iα; deduced T1/2, σ.
doi: 10.1143/JPSJ.76.045001
2004MO14 Nucl.Phys. A734, 101 (2004) K.Morita, K.Morimoto, D.Kaji, S.Goto, H.Haba, E.Ideguchi, R.Kanungo, K.Katori, H.Koura, H.Kudo, T.Ohnishi, A.Ozawa, J.C.Peter, T.Suda, K.Sueki, I.Tanihata, F.Tokanai, H.Xu, A.V.Yeremin, A.Yoneda, A.Yoshida, Y.-L.Zhao, T.Zheng Status of heavy element research using GARIS at RIKEN NUCLEAR REACTIONS 208Pb(64Ni, n), E=310, 313, 316, 320 MeV; 209Bi(64Ni, n), E=320, 323, 326 MeV; measured σ. RADIOACTIVITY 272Rg, 271Ds, 268Mt, 267Hs, 264Bh, 263Sg, 260Db, 259Rf, 256Lr, 255No, 252Md(α) [from 208Pb, 209Bi(64Ni, n) and subsequent decay]; measured Eα, T1/2.
doi: 10.1016/j.nuclphysa.2004.01.019
2004MO26 J.Phys.Soc.Jpn. 73, 1738 (2004) K.Morita, K.Morimoto, D.Kaji, H.Haba, E.Ideguchi, J.C.Peter, R.Kanungo, K.Katori, H.Koura, H.Kudo, T.Ohnishi, A.Ozawa, T.Suda, K.Sueki, I.Tanihata, H.Xu, A.V.Yeremin, A.Yoneda, A.Yoshida, Y.-L.Zhao, T.Zheng, S.Goto, F.Tokanai Production and Decay Properties of 272Rg and its Daughter Nuclei NUCLEAR REACTIONS 209Bi(64Ni, n), E=320, 323, 326 MeV; measured σ. RADIOACTIVITY 272Rg, 268Mt, 264Bh, 260Db, 256Lr(α) [from 209Bi(64Ni, n) and subsequent decay]; measured Eα, T1/2.
doi: 10.1143/JPSJ.73.1738
2004MO27 Nucl.Phys. A738, 129 (2004) K.Morimoto, K.Morita, D.Kaji, S.Goto, H.Haba, E.Ideguchi, R.Kanungo, K.Katori, H.Koura, H.Kudo, T.Ohnishi, A.Ozawa, J.C.Peter, T.Suda, K.Sueki, I.Tanihata, F.Tokanai, H.Xu, A.V.Yeremin, A.Yoneda, A.Yoshida, T.-L.Zhao, T.Zheng Status of super heavy element research using GARIS at RIKEN NUCLEAR REACTIONS 208Pb, 209Bi(64Ni, n), E=310-326 MeV; measured excitation functions. RADIOACTIVITY 271Ds, 267Hs, 263Sg, 259Rf, 255No(α) [from 208Pb(64Ni, n) and subsequent decay]; 272Rg, 268Mt, 264Bh, 260Db, 256Lr(α) [from 209Bi(64Ni, n) and subsequent decay]; measured Eα, T1/2.
doi: 10.1016/j.nuclphysa.2004.04.021
2004MO40 Eur.Phys.J. A 21, 257 (2004) K.Morita, K.Morimoto, D.Kaji, H.Haba, E.Ideguchi, R.Kanungo, K.Katori, H.Koura, H.Kudo, T.Ohnishi, A.Ozawa, T.Suda, K.Sueki, I.Tanihata, H.Xu, A.V.Yeremin, A.Yoneda, A.Yoshida, Y.-L.Zhao, T.Zheng Production and decay of the isotope 271Ds (Z = 110) NUCLEAR REACTIONS 208Pb(64Ni, n), E=308, 311, 314, 318 MeV; measured excitation function. RADIOACTIVITY 271Ds, 267Hs, 263Sg, 259Rf, 255No(α) [from 208Pb(64Ni, n) and subsequent decay]; measured Eα, T1/2. 271Ds, 267Hs deduced isomeric states.
doi: 10.1140/epja/i2003-10205-1
2004MO42 J.Phys.Soc.Jpn. 73, 2593 (2004) K.Morita, K.Morimoto, D.Kaji, T.Akiyama, S.Goto, H.Haba, E.Ideguchi, R.Kanungo, K.Katori, H.Koura, H.Kudo, T.Ohnishi, A.Ozawa, T.Suda, K.Sueki, H.Xu, T.Yamaguchi, A.Yoneda, A.Yoshida, Y.Zhao Experiment on the Synthesis of Element 113 in the Reaction 209Bi(70Zn, n)278113 NUCLEAR REACTIONS 209Bi(70Zn, n), E=349 MeV; measured delayed (recoil)α-, αα-coin; deduced production σ. Gas-filled recoil separator. RADIOACTIVITY 278Nh, 274Rg, 270Mt, 266Bh(α) [from 209Bi(70Zn, n) and subsequent decay]; measured Eα, T1/2. Gas-filled recoil separator.
doi: 10.1143/JPSJ.73.2593
2004MO43 Acta Phys.Hung.N.S. 19, 53 (2004) K.Morita, K.Morimoto, D.Kaji, Yu.L.Zhao, A.Yoshida, T.Suda, A.Yoneda, T.Ohnishi, H.Haba, E.Ideguchi, H.S.Xu, T.Zheng, H.Kudo, K.Sueki, K.Katori, I.Tanihata Status of Heavy Element Research Using a Gas-Filled Recoil Separator at RIKEN NUCLEAR REACTIONS 208Pb(64Ni, n), E=311.2, 314.2; measured σ. Gas-filled recoil separator. RADIOACTIVITY 271Ds, 267Hs, 263Sg, 259Rf, 255No(α) [from 208Pb(64Ni, n) and subsequent decay]; measured Eα, T1/2. Gas-filled recoil separator.
doi: 10.1556/APH.19.2004.1-2.8
2003FU10 Nucl.Phys. A718, 688c (2003) Zs.Fulop, L.Bartha, Gy.Gyurky, E.Somorjai, S.Kubono, H.Kudo, D.Kaji The half-life of 148Gd RADIOACTIVITY 148Gd(α); measured T1/2.
doi: 10.1016/S0375-9474(03)00889-3
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
2003KA06 J.Radioanal.Nucl.Chem. 255, 77 (2003) D.Kaji, K.Morita, K.Morimoto, Y.L.Zhao, A.Yoneda, T.Suda, A.Yoshida, H.Kudo, K.Katori, I.Tanihata Status of heavy element synthesis in RIKEN
doi: 10.1023/A:1022223613289
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.
2002KA81 J.Nucl.Radiochem.Sci. 3, No 2, 7 (2002) D.Kaji, S.Goto, M.Fujita, T.Shinozuka, M.Fujioka, H.Kudo Most Probable Charge of Fission Products in Proton-Induced Fission of 238U and 232Th NUCLEAR REACTIONS 238U, 232Th(p, F), E=13-24 MeV; measured fission fragment charge distributions.
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.
1999GO06 J.Radioanal.Nucl.Chem. 239, 109 (1999) S.Goto, D.Kaji, H.Kudo, M.Fujita, T.Shinozuka, M.Fujioka Isomeric Yield Ratios of Fission Products in Proton-Induced Fission of 232Th NUCLEAR REACTIONS 232Th(p, F)84Br/99Nb/116Ag/121Cd/132Sb/132I/134I/135Xe/136I/138Cs/148Pr, E=13-26 MeV; measured fission fragments isomeric yield ratios; deduced shell effects. On-line isotope separator.
doi: 10.1007/BF02349539
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