NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = H.Kikunaga Found 27 matches. 2023MO25 Appl.Radiat.Isot. 202, 111061 (2023) K.-ichi.Mori, T.Yamada, Y.Sato, K.Nagatsu, H.Kikunaga α(PS)-γ(Ge) digital anti-coincidence spectroscopy and its application to activity measurement of 225Ac RADIOACTIVITY 225Ac, 213Po(α), 213Bi(β-), (α); measured decay products, Eα, Iα, Eβ, Iβ, Eγ, Iγ; deduced activities. Comparison with available data. Ultrathin plastic scintillators
doi: 10.1016/j.apradiso.2023.111061
2021SH28 Phys.Rev. C 104, 024306 (2021) Y.Shigekawa, A.Yamaguchi, K.Suzuki, H.Haba, T.Hiraki, H.Kikunaga, T.Masuda, S.Nishimura, N.Sasao, A.Yoshimi, K.Yoshimura Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th RADIOACTIVITY 233Th(α)[source chemically purified by anion-exchange chromatography]; measured Eα, Iα, Eγ, Iγ, αγ-coin, half-life of levels in 229Th by αγ(t) using a passivated implanted planar Si (PIPS) detector for α detection, and LaBr3(Ce) detector for γ radiation. 229Th; deduced levels, J, π, B(M1), B(E2). Comparison of transition probabilities with estimates from the Alaga rule for intraband transitions, and with previous experimental level T1/2. 229mTh; deduced radiative half-life of the 8.28-eV isomer from B(M1) estimated from Alaga Rule for the interband transitions, and compared with experimental and other theoretical values.
doi: 10.1103/PhysRevC.104.024306
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
2019YA18 Phys.Rev.Lett. 123, 222501 (2019) A.Yamaguchi, H.Muramatsu, T.Hayashi, N.Yuasa, K.Nakamura, M.Takimoto, H.Haba, K.Konashi, M.Watanabe, H.Kikunaga, K.Maehata, N.Y.Yamasaki, K.Mitsuda Energy of the Th229 Nuclear Clock Isomer Determined by Absolute γ-ray Energy Difference RADIOACTIVITY 233U(α), 229Th(IT); measured decay products, Eγ, Iγ; deduced 229Th isomer energy, γ-ray energy with uncertainties, J, π.
doi: 10.1103/PhysRevLett.123.222501
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
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
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
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
2011HI19 Radiochim.Acta Supp 1, Proc.in Radiochemistry 109 (2011) K.Hirose, H.Kikunaga, T.Ohtsuki Precision measurements of the half-life of 196Au and 202Tl RADIOACTIVITY 196Au, 202Tl(EC); measured decay products, Eγ, Iγ; deduced T1/2 and uncertainties.
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2011KI16 Phys.Rev. C 84, 014316 (2011) H.Kikunaga, T.Suzuki, M.Nomura, T.Mitsugashira, A.Shinohara Determination of the half-life of the ground state of 229Th by using 232U and 233U decay series RADIOACTIVITY 232,233U(α); 228,229Th(α)[from 232,233U α decay]; measured Eα, Iα. 229Th; deduced half-life of ground state by the method of activity ratios and growth times. Comparison with previous measurements. 224Ra, 225Ac(α); measured Eα, Iα.
doi: 10.1103/PhysRevC.84.014316
2011KI45 Radiochim.Acta Supp 1, Proc.in Radiochemistry 113 (2011) H.Kikunaga, H.Fujisawa, K.Ooe, R.Takayama, A.Shinohara, K.Takamiya, Y.Kasamatsu, Y.Ezaki, H.Haba, T.Nakanishi, T.Mitsugashira, K.Hirose, T.Ohtsuki Precision measurement of the half-life of 90mNb and 99mTc RADIOACTIVITY 90Nb(EC), 99Tc(β-); measured decay products, Eγ, Iγ; deduced T1/2 and uncertainties.
doi: 10.1524/rcpr.2011.0020
2009KI14 Phys.Rev. C 80, 034315 (2009) H.Kikunaga, Y.Kasamatsu, H.Haba, T.Mitsugashira, M.Hara, K.Takamiya, T.Ohtsuki, A.Yokoyama, T.Nakanishi, A.Shinohara Half-life estimation of the first excited state of 229Th by using α-particle spectrometry RADIOACTIVITY 233U(α); measured Eα, Iα. 229mTh; deduced half-life.
doi: 10.1103/PhysRevC.80.034315
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
2008YO06 Hyperfine Interactions 181, 69 (2008) A.Yokoyama, T.Hashimoto, K.Ihara, H.Kikunaga, N.Kinoshita, I.Yamazaki, K.Kataoka, M.Yanase, M.Takata, Y.Murakami, K.Takamiya, M.Tanigaki, Y.Ohkubo Measurement of electric field gradient at 117In on the Cu-site in mavicyanin by perturbed angular correlation of γ-rays
doi: 10.1007/s10751-008-9691-z
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
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
2007NI06 J.Radioanal.Nucl.Chem. 272, 661 (2007) K.Ninomiya, H.Sugiura, T.Nakatsuka, Y.Kasamatsu, H.Kikunaga, W.Sato, T.Yoshimura, H.Matsumura, K.Takamiya, M.K.Kubo, K.Sueki, A.Yokoyama, Y.Hamajima, T.Miura, K.Nishiyama, A.Shinohara Study of electronic X-rays emitted from pionic and muonic atoms ATOMIC PHYSICS Z=30-92; measured the energy shifts of electronic Kα X-rays for light muonic atoms.
doi: 10.1007/s10967-007-0642-y
2005KA58 Radiochim.Acta 93, 511 (2005) Y.Kasamatsu, H.Kikunaga, K.Takamiya, T.Mitsugashira, T.Nakanishi, Y.Ohkubo, T.Ohtsuki, W.Sato, A.Shinohara Search for the decay of 229mTh by photon detection RADIOACTIVITY 229mTh(IT) [from 233U(α)]; measured Eγ, Iγ; deduced T1/2 limits for isomer decay.
doi: 10.1524/ract.2005.93.9-10.511
2005KI25 Radiochim.Acta 93, 507 (2005) H.Kikunaga, Y.Kasamatsu, K.Takamiya, T.Mitsugashira, M.Hara, T.Ohtsuki, H.Yuki, A.Shinohara, S.Shibata, N.Kinoshita, A.Yokoyama, T.Nakanishi Search for α-decay of 229mTh produced from 229Ac β-decay following 232Th(γ, p2n) reaction RADIOACTIVITY 229Th(α) [from 232Th(γ, 2np)]; measured Eα, Iα; deduced possible isomeric state decay.
doi: 10.1524/ract.2005.93.9-10.507
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
2004MB13 Nucl.Instrum.Methods Phys.Res. B 223-224, 807 (2004) H.Matsumura, T.Aze, Y.Oura, H.Kikunaga, A.Yokoyama, K.Takamiya, S.Shibata, T.Otsuki, H.Yuki, K.Sakamoto, H.Haba, K.Washiyama, H.Nagai, H.Matsuzaki Yield measurements for 7Be and 10Be productions from natCu, natAg and 197Au by bremsstrahlung irradiation at E0=200 MeV NUCLEAR REACTIONS Cu(γ, x), Ag(γ, x), 197Au(γ, x), E=200 MeV; measured products, 7Be, 10Be; deduced σ, σ(E). Data were imported from EXFOR entry K2024.
doi: 10.1016/j.nimb.2004.04.149
2003MI02 J.Radioanal.Nucl.Chem. 255, 63 (2003) T.Mitsugashira, M.Hara, T.Ohtsuki, H.Yuki, K.Takamiya, Y.Kasamatsu, A.Shinohara, H.Kikunaga, T.Nakanishi Alpha-decay from the 3.5 eV isomer of 229Th RADIOACTIVITY 229mTh(α) [from 230Th(γ, n)]; measured Eα, T1/2.
doi: 10.1023/A:1022267428310
2003YO04 Czech.J.Phys. (Supplement) 53, A411 (2003) A.Yokoyama, T.Murae, N.Kinoshita, H.Kikunaga, T.Ohki, M.Shigekawa, Y.Kasamatsu, A.Shinohara, S.Shibata, T.Saito Radioisotope production in target fragmentation with high-energy heavy ions at HIMAC NUCLEAR REACTIONS 197Au(12C, X), E=180, 290, 400 MeV/nucleon; 197Au(40Ar, X), E=290, 650 MeV/nucleon; measured fragment yields, isotopic production σ. Thick-target thick-catcher method.
doi: 10.1007/s10582-003-0053-4
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