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NSR database version of April 24, 2024.

Search: Author = T.Tachibana

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2018YO11      Phys.Rev. C 98, 041303 (2018)

T.Yoshida, T.Tachibana, S.Okumura, S.Chiba

Spectral anomaly of reactor antineutrinos based on theoretical energy spectra

NUCLEAR REACTIONS ^235,238U, ^239,241Pu(n, F), E=thermal; calculated spectra for electrons and antineutrinos from fission products within a power reactor using gross theory of β-decay for about 500 fission products. Comparison with inverse β-decay (IBD) data from Daya Bay reactors, and from BILL spectrometer at ILL-Grenoble. Relevance to future experiments at high-flux reactors at Grenoble (the STEREO Collaboration), Oak Ridge (the PROSPECT Collaboration), and at Mol (the SoLid Collaboration).

doi: 10.1103/PhysRevC.98.041303
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2015TA29      Sci. Rep. 5, 10977 (2015)

T.Tachibana, Z.Jurek, H.Fukuzawa, K.Motomura, K.Nagaya, S.Wada, P.Johnsson, M.Siano, S.Mondal, Y.Ito, M.Kimura, T.Sakai, K.Matsunami, H.Hayashita, J.Kajikawa, X.-J.Liu, E.Robert, C.Miron, R.Feifel, J.P.Marangos, K.Tono, Y.Inubushi, M.Yabashi, S.-K.Son, B.Ziaja, M.Yao, R.Santra, K.Ueda

Nanoplasma Formation by High Intensity Hard X-rays

NUCLEAR REACTIONS Ar(γ, X), E ∼ 5 keV; measured reaction products, X-rays; deduced electron yields, volume integrated theoretical electron spectrum of x-ray. Comparison with theoretical calculations. The SPring-8 Angstrom Compact free electron LAser (SACLA) facility in Japan.

doi: 10.1038/srep10977
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2011NI01      Phys.Rev.Lett. 106, 052502 (2011)

S.Nishimura, Z.Li, H.Watanabe, K.Yoshinaga, T.Sumikama, T.Tachibana, K.Yamaguchi, M.Kurata-Nishimura, G.Lorusso, Y.Miyashita, A.Odahara, H.Baba, J.S.Berryman, N.Blasi, A.Bracco, F.Camera, J.Chiba, P.Doornenbal, S.Go, T.Hashimoto, S.Hayakawa, C.Hinke, E.Ideguchi, T.Isobe, Y.Ito, D.G.Jenkins, Y.Kawada, N.Kobayashi, Y.Kondo, R.Krucken, S.Kubono, T.Nakano, H.Sakurai, H.Scheit, K.Steiger, D.Steppenbeck, K.Sugimoto, H.J.Ong, S.Ota, Zs.Podolyak, S.Takano, A.Takashima, K.Tajiri, T.Teranishi, Y.Wakabayashi, P.M.Walker, O.Wieland, H.Yamaguchi

β-Decay Half-Lives of Very Neutron-Rich Kr to Tc Isotopes on the Boundary of the r-Process Path: An Indication of Fast r-Matter Flow

RADIOACTIVITY ^97,98,99,100Kr(β^-), ^{97,98,99,100,101,102}Rb(β^-), ^{101,102,103,104,105}Sr, ^{103,104,105,106,107,108}Y(β^-), ^108,109,110Zr(β^-), ^111,112Nb(β^-), ^{112,113,114,115}Mo(β^-), ^116,117Tc(β^-) [from Be(²³⁸U, X), E=345 MeV/nucleon]; measured decay products, Ee, Ie; deduced T_1/2. Comparison with FRDM+QRPA, KTUY+GT2 model calculations, astrophysical r-process path.

doi: 10.1103/PhysRevLett.106.052502
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2011YO12      J.Korean Phys.Soc. 59, 1543s (2011)

T.Yoshida, N.Hagura, R.Umezu, A.Algora, J.L.Tain, D.Jordan, T.Tachibana

Impact of TAGS Measurement on FP Decay Data and Decay Heat Calculations

RADIOACTIVITY ²³⁹Pu(SF); measured fission products Eβ, Iβ(t), Eγ, Iγ(t), decay heat using TAGS (total absorption gamma-ray spectrometry).

doi: 10.3938/jkps.59.1543
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2006HA26      J.Nucl.Sci.Technol.(Tokyo) 43, 497 (2006)

N.Hagura, T.Yoshida, T.Tachibana

Reconsideration of the Theoretical Supplementation of Decay Data in Fission Product Decay Heat Summation Calculations

NUCLEAR REACTIONS ²³⁵U, ²³⁹Pu(n, F), E not given; analyzed β-decay data; deduced fission product decay heat.

doi: 10.1080/18811248.2006.9711128
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2005KO07      Prog.Theor.Phys.(Kyoto) 113, 305 (2005)

H.Koura, T.Tachibana, M.Uno, M.Yamada

Nuclidic Mass Formula on a Spherical Basis with an Improved Even-Odd Term

ATOMIC MASSES Z=2-130; A=4-330; calculated masses, neutron and proton separation energies, deformation parameters.

NUCLEAR STRUCTURE Z=2-130; A=4-330; calculated masses, neutron and proton separation energies, deformation parameters.

doi: 10.1143/PTP.113.305
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2001KA46      J.Nucl.Sci.Technol.(Tokyo) 38, 470 (2001)

J.-I.Katakura, T.Yoshida, K.Oyamatsu, T.Tachibana

Estimation of Beta- and Gamma-Ray Spectra for JENDL FP Decay Data File

RADIOACTIVITY ⁹⁹Sr, ^143,144Cs(β^-); calculated Eβ, Eγ. Fission product nuclei, gross theory of beta decay.

NUCLEAR REACTIONS ²⁴¹Pu(n, F), E=thermal; calculated aggregate fission product Eβ, Eγ. Comparison with data.

doi: 10.1080/18811248.2001.9715056
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2000KO27      Nucl.Phys. A674, 47 (2000)

H.Koura, M.Uno, T.Tachibana, M.Yamada

Nuclear Mass Formula with Shell Energies Calculated by a New Method

NUCLEAR STRUCTURE Z=2-120; calculated shell energies, masses, deformation effects.

ATOMIC MASSES Z=2-120; calculated shell energies, masses, deformation effects.

doi: 10.1016/S0375-9474(00)00155-X
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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, 168}Tb and Levels in ^{167, 168}Dy

RADIOACTIVITY ^167,168Tb(β^-) [from ²³⁸U(p, F)]; measured Eγ, Iγ, βγ-coin, T_1/2. ^167,168Dy deduced levels, J, π, configurations, rotational band features. Comparisons with neighboring nuclides.

doi: 10.1103/PhysRevC.59.3060
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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

Q_EC Measurement of ^{124, 125, 127-130}La

RADIOACTIVITY ^{124,125,127,128,129,130}La(β⁺), (EC) [from Mo, ²⁹Mo(³⁶Ar, 3pxn), E=5.4 MeV/nucleon]; measured Eγ, Iγ, β-spectra, βγ-coin, T_1/2; deduced Q(EC), masses. HPGe, on-line mass separation.

ATOMIC MASSES ^{124,125,127,128,129,130}La(β⁺), (EC) [from Mo, ²⁹Mo(³⁶Ar, 3pxn), E=5.4 MeV/nucleon]; measured Eγ, Iγ, β-spectra, βγ-coin, T_1/2; deduced Q(EC), masses. HPGe, on-line mass separation.

doi: 10.1143/JPSJ.67.3405
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1997HI03      Nucl.Phys. A616, 438c (1997)

D.Hirata, K.Sumiyoshi, I.Tanihata, Y.Sugahara, T.Tachibana, H.Toki

A Systematic Study of Even-Even Nuclei Up to the Drip Lines within the Relativistic Mean Field Framework

NUCLEAR STRUCTURE Z=8-120; ^{94,96,98,100,102}Zr; calculated binding energy per particle; A ≈ 80-220; calculated relative r-process abundances. Relativistic mean field theory.

doi: 10.1016/S0375-9474(97)00115-2
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1997NA21      Nucl.Phys. A625, 521 (1997)

H.Nakata, T.Tachibana, M.Yamada

Semi-Gross Theory of Nuclear β-Decay

doi: 10.1016/S0375-9474(97)00413-2
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1995NA15      Nucl.Phys. A594, 27 (1995)

H.Nakata, T.Tachibana, M.Yamada

Refinement of the Gross Theory of β-Decay for Odd-Odd Nuclei

NUCLEAR STRUCTURE A ≤ 250; calculated β^--decay, (β⁺+EC)-decay T_1/2, log ft, other aspects for odd-odd nuclei. Refined β-decay gross theory.

doi: 10.1016/0375-9474(95)00349-6
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1995TA18      Nucl.Phys. A588, 333c (1995)

T.Tachibana, M.Arnould

Beta-Decay Properties of Exotic Nuclei and the Astrophysical r-Process

NUCLEAR STRUCTURE A=80-200; calculated relative r-process abundances; deduced neutron rich nuclei β-decay T_1/2 evaluation discrepancies. Three different β-decay models.

doi: 10.1016/0375-9474(95)00158-W
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1992TA12      J.Nucl.Sci.Technol.(Tokyo) 29, 303 (1992)

K.Tasaka, J.Miwa, J.Katakura, T.Yoshida, K.Kawade, T.Katoh, T.Tachibana, M.Yamada, R.Nakasima

Calculation of Beta-Ray Spectra from Individual and Aggregate Fission Products

NUCLEAR STRUCTURE ⁹⁵Rb, ⁹⁶Y, ⁹⁶Sr, ^81,80As, ¹³³Sn, ²³⁵U, ^239,241Pu; calculated β-ray energy spectra. Individual, aggregate fission products, gross β-decay theory.

doi: 10.1080/18811248.1992.9731530
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1990TA35      Prog.Theor.Phys.(Kyoto) 84, 641 (1990)

T.Tachibana, M.Yamada, Y.Yoshida

Improvement of the Gross Theory of β-Decay. II - One-Particle Strength Function -

RADIOACTIVITY ³⁰S, ⁸⁴Ru(β⁺); ⁵²Ti, ²⁰⁶Tl(β^-); calculated Gamow-Teller transition normalization factor. Gross β-decay theory, improvements.

doi: 10.1143/ptp/84.4.641
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1988TA15      At.Data Nucl.Data Tables 39, 251 (1988)

T.Tachibana, M.Uno, M.Yamada, S.Yamada

Empirical Mass Formula with Proton-Neutron Interaction

doi: 10.1016/0092-640X(88)90026-5
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1984TA06      J.Phys.Soc.Jpn. 53, 543 (1984)

T.Tachibana

Semi-Empirical Estimation of β-Strength Functions and Delayed Neutron Emission Probabilities

RADIOACTIVITY ²⁷Na, ⁴⁹K, ⁸⁹Br, ⁹⁵Rb, ^129,129mIn, ¹⁴¹Xe(β^-n); calculated β-strength function, β-delayed neutron emission probabilities. ^89,91Br, ⁹⁷Y, ^127,127mIn, ^137,139I, ^87,89Se, ⁹³Kr, ⁹⁷Sr, ¹³⁷Te(β^-n); calculated β-delayed neutron emission probability. ²⁵Ne, ⁴⁹Ca, ^51,53Ti, ⁹¹Kr, ⁸⁵Se, ¹²¹Cd(β^-); calculated β-strength function. Semi-empirical method extension.

doi: 10.1143/JPSJ.53.543
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1983TA04      Nucl.Phys. A395, 235 (1983)

T.Tachibana, M.Yamada

Semi-Empirical Method for Estimating the β-Strength Function

RADIOACTIVITY ⁸⁷Br(β^-n); ¹³⁷I(β^-n); calculated β-strength function, neutron emission probabilities. Semi-empirical method.

doi: 10.1016/0375-9474(83)90098-2
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