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NSR database version of April 11, 2024.

Search: Author = H.Kikunaga

Found 27 matches.

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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics

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


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2676. Data from this article have been entered in the XUNDL database. For more information, click here.


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


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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2450. 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.


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2438. Data from this article have been entered in the XUNDL database. For more information, click here.


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2406.


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2371.


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2388.


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2324. Data from this article have been entered in the XUNDL database. For more information, click here.


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.

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


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


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics

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


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2055.


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2024.


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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