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NSR database version of May 19, 2024.

Search: Author = A.Yokoyama

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2020MA07      J.Radioanal.Nucl.Chem. 323, 921 (2020)

E.Maeda, A.Yokoyama, T.Taniguchi, K.Washiyama, I.Nishinaka

Measurements of the excitation functions of radon and astatine isotopes from 7Li-induced reactions with 209Bi for development of a 211Rn-211At generator

NUCLEAR REACTIONS 209Bi(7Li, 5n), (7Li, 6n), (7Li, 5np), E<60 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with available data.

doi: 10.1007/s10967-019-06990-z
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2726.


2016KI02      Phys.Rev. C 93, 025801 (2016)

N.Kinoshita, K.Hayashi, S.Ueno, Y.Yatsu, A.Yokoyama, N.Takahashi

Proton capture cross sections on neutron-magic 144Sm at astrophysically relevant energies

NUCLEAR REACTIONS 144Sm(p, γ), E=2.8-7.6 MeV; measured Eγ, Iγ, σ(E) by activation method. enriched target. Experiment performed at RCNP-Osaka University. Comparison with theoretical cross sections using NON-SMOKER and TALYS with CTFG, BSFG, GS, and HT level-density models. Relevance to nucleosynthesis in T9=3-5 range.

doi: 10.1103/PhysRevC.93.025801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2496.


2015NI08      J.Radioanal.Nucl.Chem. 304, 1077 (2015)

I.Nishinaka, A.Yokoyama, K.Washiyama, E.Maeda, S.Watanabe, K.Hashimoto, N.S.Ishioka, H.Makii, A.Toyoshima, N.Yamada, R.Amano

Production and separation of astatine isotopes in the 7Li + natPb reaction

NUCLEAR REACTIONS Pb(7Li, X)207At/208At/209At/210At/211At, E=29-57 MeV; measured reaction products, Eα, Iα, Eγ, Iγ; deduced production σ. Comparison with the predictions of the statistical calculation using the modified HIVAP code.

doi: 10.1007/s10967-015-3975-y
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2481.


2012KI16      Science 335, 1614 (2012)

N.Kinoshita, M.Paul, Y.Kashiv, P.Collon, C.M.Deibel, B.DiGiovine, J.P.Greene, D.J.Henderson, C.L.Jiang, S.T.Marley, T.Nakanishi, R.C.Pardo, K.E.Rehm, D.Robertson, R.Scott, C.Schmitt, X.D.Tang, R.Vondrasek, A.Yokoyama

A Shorter 146Sm Half-Life Measured and Implications for 146Sm-142Nd Chronology in the Solar System

RADIOACTIVITY 146Sm(α); measured decay products, Eα, Iα; deduced T1/2 and its uncertainty and 146Sm/144Sm ratio. 146Sm - 142Nd clock, comparison with available data.

doi: 10.1126/science.1215510
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


2008KI05      J.Phys.(London) G35, 014033 (2008)

N.Kinoshita, T.Hashimoto, T.Nakanishi, A.Yokoyama, H.Amakawa, T.Mitsugashira, T.Ohtsuki, N.Takahashi, I.Ahmad, J.P.Greene, D.J.Henderson, C.L.Jiang, M.Notani, R.C.Pardo, N.Patel, K.E.Rehm, R.Scott, R.Vondrasek, L.Jisonna, P.Collon, D.Robertson, C.Schmitt, X.D.Tang, Y.Kashiv, H.Nassar, M.Paul

Ultra-sensitive detection of p-process nuclide 146Sm produced by (γ, n), (p, 2nε) and (n, 2n) reactions

doi: 10.1088/0954-3899/35/1/014033
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


2007HA49      J.Nucl.Radiochem.Sci. 8, 109 (2007)

T.Hashimoto, T.Nakanishi, A.Yokoyama, H.Amakawa, T.Mitsugashira, T.Ohtsuki, N.Takahashi, I.Ahmad, J.P.Greene, D.J.Henderson, C.L.Jiang, M.Notani, R.C.Pardo, N.Patel, K.E.Rehm, R.Scott, R.Vondrasek, L.Jisonna, P.Collon, D.Robertson, C.Schmitt, X.D.Tang, Y.Kashiv, M.Paul

Technological Development for Half-life Measurement of 146Sm Nuclide

NUCLEAR REACTIONS 147Sm(γ, n), E < 50 MeV; 147Sm(n, 2n), E=6-10 MeV; 147Sm(p, 2n), E=21 MeV; measured Eα, Iα.


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


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.


2003KI26      J.Nucl.Radiochem.Sci. 4, No 1, 5 (2003)

N.Kinoshita, A.Yokoyama, T.Nakanishi

Half-Life of Samarium-147

RADIOACTIVITY 147Sm(α); measured Eα, T1/2. Comparison with previous results.


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


2002YO03      Nucl.Phys. A701, 231c (2002)

A.Yokoyama

Role of Two-Body Operators in Electromagnetic Transitions

NUCLEAR STRUCTURE 44,50Ti, 48,50,52Cr, 52,54Fe; calculated E2 and E6 transition strengths; deduced role of two-body contributions. Comparisons with data.

doi: 10.1016/S0375-9474(01)01581-0
Citations: PlumX Metrics


2001YO13      Radiochim.Acta 89, 703 (2001)

A.Yokoyama, S.Morimoto, H.Araki, J.Sanada, H.Baba, A.Shinohara, S.Shibata, T.Saito, Y.Ohkubo

Radiochemical Study on the Mechanism of Target Fragmentation of Cu, Nb, Pr and Au Targets Induced by 12C and 40Ar Projectiles

NUCLEAR REACTIONS Cu, Nb, Pr, Au(12C, X), (40Ar, X), E=180, 290, 400, 690 MeV/nucleon; measured fragments mass distributions, recoil momenta; deduced reaction mechanism features. Activation technique.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2074.


1999BA25      J.Radioanal.Nucl.Chem. 239, 103 (1999)

H.Baba, N.Takahashi, A.Yokoyama, T.Saito

Radiochemical Study of Fast Fission Mechanism

NUCLEAR REACTIONS 238U(12C, F), E=110, 130, 140 MeV; measured fragment mass yield distributions following fission; deduced fast fission component. Radiochemical techniques.

doi: 10.1007/BF02349538
Citations: PlumX Metrics


1999TA10      J.Radioanal.Nucl.Chem. 239, 117 (1999)

K.Takamiya, T.Inoue, K.Nakanishi, A.Yokoyama, N.Takahashi, T.Saito, H.Baba, Y.Nakagome

Fission Fragment Configurations at the Scission Point of 233U, 235U and 239Pu(nth, f)

NUCLEAR REACTIONS 233,235U, 239Pu(n, F), E=thermal; measured fission fragments kinetic energy, mass distributions, deformation; deduced multi-mode fission mechanism.

doi: 10.1007/BF02349541
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23595.


1999YO03      J.Radioanal.Nucl.Chem. 239, 143 (1999)

A.Yokoyama, S.Morimoto, T.Inoue, J.Sanada, H.Araki, T.Saito, H.Baba, S.Shibata, A.Shinohara, T.Muroyama, Y.Ohkubo

Reaction Mechanism for Target-Like Products from 197Au Target Bombarded with 12C Ions of Energies Above 100 MeV/u

NUCLEAR REACTIONS 197Au(12C, X), E=180, 230, 400 MeV/nucleon; measured Z=77-79 products production σ; deduced reaction mechanism features. Activation technique.

doi: 10.1007/BF02349546
Citations: PlumX Metrics


1998BB04      Eur.Phys.J. A 3, 281 (1998)

H.Baba, N.Takahashi, A.Yokoyama, T.Saito

Fast Fission Mechanism and Duality of the Diffusion Process

NUCLEAR REACTIONS 238U(12C, F), E=110, 130, 140 MeV; measured cumulative, independent fission yields; deduced fast fission component, reaction time, other reaction mechanism features. Radiochemical techniques.

doi: 10.1007/s100500050179
Citations: PlumX Metrics


1998BB05      Nucl.Instrum.Methods Phys.Res. A416, 301 (1998)

H.Baba, J.Sanada, H.Araki, A.Yokoyama

Determination of the Formation Cross Section by γ Spectrometry: Derivation of universal correction formulas for ingrowth during irradiation

NUCLEAR REACTIONS 238U(p, F), E=8.6 MeV; calculated fission yield correction factors. Correction formulae for ingrowth.

doi: 10.1016/S0168-9002(98)00671-8
Citations: PlumX Metrics


1998TA13      Radiochim.Acta 80, 171 (1998)

N.Takahashi, A.Yokoyama, H.Baba, T.Yamaguchi, D.Yano, T.Saito, N.Nitani, Y.Hamajima, T.Ohtsuki, K.Masumoto

Sudden Changes in the Characteristics of GDR Fission of 238U Around the Critical Energy for Nuclear Phase Transition

NUCLEAR REACTIONS 238U(γ, F), E=15, 30, 60 MeV bremsstrahlung; measured fission products γ-spectra; deduced yields, fission modes energy dependence, related features.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2602.


1997BA83      J.Nucl.Sci.Technol.(Tokyo) 34, 871 (1997)

H.Baba, T.Saito, N.Takahashi, A.Yokoyama, T.Miyauchi, S.Mori, D.Yano, T.Hakoda, K.Takamiya, K.Nakanishi, Y.Nakagome

Role of Effective Distance in the Fission Mechanism Study by the Double-Energy Measurement for Uranium Isotopes

NUCLEAR REACTIONS 233,235U(n, F), E=thermal; 238U(p, F), E=9.8 MeV; measured fission fragment mass, kinetic energy distributions. 234,236U, 239Np deduced fission barrier features.

doi: 10.1080/18811248.1997.9733759
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23014.


1997YO05      Phys.Rev. C55, 1282 (1997)

A.Yokoyama

Two-Body Part of Effective Transition Operators and Higher-Multipole Transitions in the 1f7/2-Shell Nuclei

NUCLEAR STRUCTURE 44Sc, 52Mn, 52,53Fe; calculated transition matrix elements, strengths. First-order perturbation theory.

doi: 10.1103/PhysRevC.55.1282
Citations: PlumX Metrics


1997YO10      J.Radioanal.Nucl.Chem. 223, 99 (1997)

A.Yokoyama, H.Baba, N.Takahashi, M.-C.Duh, T.Saito

Charge Degree of Freedom as a Sensitive Probe for Fission Mechanism

NUCLEAR REACTIONS 238U(12C, F), E=110, 130, 140 MeV; measured fission fragments independent, cumulative yields. 238U(12C, F), E=46-205 MeV; analyzed fission fragments charge, mass yield distributions; deduced fission mechanism features.

doi: 10.1007/BF02223370
Citations: PlumX Metrics


1996BA69      Z.Phys. A356, 61 (1996)

H.Baba, A.Yokoyama, N.Takahashi, N.Nitani, R.Kasuga, T.Yamaguchi, D.Yano, K.Takamiya, N.Shinohara, K.Tsukada, Y.Hatsukawa, Y.Nagame

Abrupt Changes of the Characteristics of the Proton-Induced Fission of 238U Around 14-MeV Excitation

NUCLEAR REACTIONS, ICPND 238U(p, F), E=9.4, 12.4, 17.9 MeV; measured fission fragment cumulative, independent yields vs Z, mass yield distributions for A=83-238; deduced fission mechanism incident energy dependence.

doi: 10.1007/s002180050149
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2036.


1996YO07      Z.Phys. A356, 55 (1996)

A.Yokoyama, N.Takahashi, N.Nitani, H.Baba, R.Kasuga, T.Yamaguchi, D.Yano, K.Takamiya, N.Shinohara, K.Tsukada, Y.Hatsukawa, Y.Nagame

Precision Determination of Charge Dispersion and Distribution in the Proton-Induced Fission of 238U at 13.9 MeV Excitation

NUCLEAR REACTIONS, ICPND 238U(p, F), E=13.9 MeV; measured fission fragment mass yield distribution, charge dispersion, distribution for 73Zn-238Np. Gas-jet transport systems, radiochemical stacked-target technique, Ge γ-ray spectrometry.

doi: 10.1007/s002180050148
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0348.


1996YO09      J.Radioanal.Nucl.Chem. 212, 451 (1996)

A.Yokoyama, K.Takesako, T.Saito, H.Baba, Y.Ohkubo, A.Shinohara, M.Furukawa

Limiting Behavior of Target Fragmentation in the Reactions of Lanthanide Nuclei Induced by Heavy Projectiles

NUCLEAR REACTIONS 165Ho(15N, X), E=1 GeV; 165Ho(14N, X), E=1.8 GeV; 141Pr(40Ar, X), E=2.3, 3.8 GeV; measured fragment mass yield distribution; deduced target fragmentation limiting behavior related features. Off-line γ spectrometry.

doi: 10.1007/BF02163290
Citations: PlumX Metrics


1995KU36      Radiochim.Acta 69, 65 (1995)

H.Kusawake, T.Saito, A.Yokoyama, K.Takesako, N.Takahashi, H.Baba, Y.Ohkubo, A.Shinohara

Angular-Momentum Effect in the Fusion Reaction of 141Pr with 40Ar Projectiles

NUCLEAR REACTIONS, ICPND 141Pr(40Ar, X), (40Ar, F), E=7-94 MeV/nucleon; measured residuals production σ, cumulative yields for Zn to Ta isotopes, mass 65-173, fission product mass, charge distribution.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1910.


1995TA22      Z.Phys. A353, 35 (1995)

N.Takahashi, N.Yukawa, H.Kobayashi, A.Yokoyama, T.Saito, H.Baba

Two Mode Fission: Existence of two independent paths in the fission of actinide elements

NUCLEAR REACTIONS 232Th, 238U(α, F), E=45 MeV; measured fission fragment production σ, total kinetic energy, anisotropy vs mass; deduced symmetric, asymmetric fission modes existence, statistical, cold fission temperatures for 232Th+α, 238U+α systems assuming 233U, 239Pu respectively as fissioning nuclei.

doi: 10.1007/BF01297725
Citations: PlumX Metrics


1992DU06      Nucl.Phys. A550, 281 (1992)

M.-C.Duh, H.Baba, N.Takahashi, A.Yokoyama, T.Saito, S.Baba, K.Hata

Charge and Mass Characteristics of the Fragments in the Fission of Uranium Isotopes Induced by 12C Ions

NUCLEAR REACTIONS, ICPND 238,235,233U(12C, F), E < 100 MeV; measured fission product yields. Activation method.

doi: 10.1016/0375-9474(92)90684-C
Citations: PlumX Metrics


1992YO03      Phys.Rev. C46, 647 (1992)

A.Yokoyama, W.Loveland, J.O.Liljenzin, K.Aleklett, D.J.Morrissey, G.T.Seaborg

Fragmentation of 197Au by 21 MeV/Nucleon 129Xe

NUCLEAR REACTIONS 197Au(129Xe, X), (129Xe, F), E=21 MeV/nucleon; measured residuals production σ, independent yield distribution, intermediate mass, fission fragment recoils, X=24Na-198Tl; deduced fragment mass distribution, velocities, momenta. Stochastic nucleon exchange model.

doi: 10.1103/PhysRevC.46.647
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2564.


1991BA56      Nucl.Instrum.Methods Phys.Res. A309, 236 (1991)

H.Baba, A.Yokoyama, Y.Sakuraba, N.Nitani, T.Saito, S.Baba

Systematic Treatment of the Photopeak Efficiency

RADIOACTIVITY 139Ce, 113Sn, 85Sr, 137Cs, 54Mn, 57,60Co, 88Y, 22,24Na, 133Ba, 152Eu; measured photopeak efficiencies ratios. Large Ge detectors.

doi: 10.1016/0168-9002(91)90108-3
Citations: PlumX Metrics


1990NA11      Nucl.Phys. A510, 518 (1990)

Y.Nagame, H.Ikezoe, S.Baba, K.Hata, T.Sekine, S.Ichikawa, M.Magara, K.Ideno, A.Yokoyama, Y.Hatsukawa, T.Ohtsuki

Statistical Emission of Complex Fragments Produced in the Reaction 37Cl + 68Zn

NUCLEAR REACTIONS 68Zn(37Cl, X), E=156, 166, 177 MeV; measured σ(fragment, E, θ), (fragment)(fragment)-coin; deduced mass division characteristics. Statistical model calculation.

doi: 10.1016/0375-9474(90)90064-S
Citations: PlumX Metrics


1990NA28      Phys.Lett. 249B, 13 (1990)

Y.Nagame, H.Ikezoe, T.Ohtsuki, A.Yokoyama, Y.Hatsukawa, S.Baba, K.Hata, T.Sekine, K.Ideno

Symmetric Mass Division Process in the Reactions 37Cl + 68Zn and 16O + 89Y

NUCLEAR REACTIONS 68Zn(37Cl, X), E=160, 177 MeV; 89Y(16O, X), E=140 MeV; measured fragment σ(θ) vs mass; deduced mass distribution variances, total kinetic energy distribution widths.

doi: 10.1016/0370-2693(90)90520-G
Citations: PlumX Metrics


1990YO05      Phys.Rev. C42, 1399 (1990)

A.Yokoyama, K.Ogawa

Microscopic Interpretation of Inelastic Electron Scattering from Even Ni Isotopes

NUCLEAR STRUCTURE 58,60,62,64Ni; calculated transition charge densities. Shell model, (e, e') data input.

doi: 10.1103/PhysRevC.42.1399
Citations: PlumX Metrics


1989YO01      Z.Phys. A332, 61 (1989)

A.Yokoyama, T.Saito, M.Shoji, H.Baba, S.Baba, K.Hata, T.Sekine, S.Ichikawa

Nuclear Transfer in Highly Mass-Asymmetric Reaction Systems between 197Au and Relatively Light Projectiles in the Energy Region below 10 MeV/u I. Target-Like Products

NUCLEAR REACTIONS, ICPND 197Au(12C, X), (16O, X), (37Cl, X), (14N, X)199Au/198Au/198mAu/196Au/196mAu/195Au/194Au/193Au/192Au, E ≈ threshold-130 MeV; measured residual production σ(E); deduced reaction mechanism. Activation technique.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1231.


1989YO02      Z.Phys. A332, 71 (1989)

A.Yokoyama, T.Saito, H.Baba, K.Hata, Y.Nagame, S.Ichikawa, S.Baba, A.Shinohara, N.Imanishi

Nuclear Transfer in Highly Mass-Asymmetric Reaction Systems between 197Au and Relatively Light Projectiles in the Energy Region below 10 MeV/u II. Projectile (16O)-Like Products

NUCLEAR REACTIONS 197Au(16O, X), E=6.6, 8.8 MeV/nucleon; measured σ(θ) for X=Li, Be, B, C, N, F; deduced reaction mechanism.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2090.


1989YO04      Phys.Rev. C39, 2458 (1989)

A.Yokoyama, K.Ogawa

Role of Core Polarization in Inelastic Electron Scattering from Even Ni Isotopes

NUCLEAR STRUCTURE 58,60,62,64Ni; calculated transition charge densities. Shell model, core polarization.

doi: 10.1103/PhysRevC.39.2458
Citations: PlumX Metrics


1988BA57      Z.Phys. A331, 53 (1988)

S.Baba, K.Hata, S.Ichikawa, T.Sekine, Y.Nagame, A.Yokoyama, M.Shoji, T.Saito, N.Takahashi, H.Baba, I.Fujiwara

Evaporation Residue Formation Competing with the Fission Process in the 197Au + 16O, 12C Reactions and Fission Barriers at a Specified J Window

NUCLEAR REACTIONS, ICPND, MECPD 197Au(16O, 3n), (16O, 4n), (16O, 5n), (16O, 6n), (16O, 7n), E(cm) ≈ 70-130 MeV; 197Au(12C, 3n), (12C, 4n), (12C, 5n), (12C, 6n), E(cm) ≈ 55-100 MeV; measured evaporation residue σ(E). 211Fr, 207At deduced fission barrier.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0474.


1988SE08      Z.Phys. A331, 105 (1988)

T.Sekine, S.Ichikawa, M.Oshima, H.Iimura, Y.Nagame, K.Hata, N.Takahashi, A.Yokoyama

Identification of a New Isotope of 121La by Means of Element-Selective Mass Separation

RADIOACTIVITY 121La(β+), (EC) [from 92Mo(32S, X), E=4.7 MeV/nucleon]; measured βγ-coin, γγ(X-ray)-coin; deduced T1/2. 121Ba deduced transitions.

NUCLEAR REACTIONS 92Mo(32S, xnp), E=4.7 MeV/nucleon; measured γγ(X-ray)-, βγ-coin; deduced evidence for 121La.


1988YO03      Phys.Rev. C38, 1058 (1988)

A.Yokoyama, H.Horie

Shell-Model Calculations of Isovector Electromagnetic Transitions and Gamow-Teller Beta Decays in the N ≈ 28 Region

NUCLEAR STRUCTURE 49Ca, 49,50Sc, 50,51Ti, 51,52V, 52,53Cr, 53Mn, 55Fe, 55Co; calculated magnetic dipole moments, isovector E2, M1 transition strength, isobaric analog states, Gamow-Teller beta decay log ft values. Shell model.

doi: 10.1103/PhysRevC.38.1058
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1987SH19      Nucl.Phys. A472, 151 (1987)

A.Shinohara, T.Saito, M.Shoji, A.Yokoyama, H.Baba, M.Ando, K.Taniguchi

Nuclear Excitation in 189Os with Synchrotron Radiation

NUCLEAR REACTIONS 189Os(γ, X), E=2.5 GeV synchroton radiation; measured E X-ray, I X-ray; deduced probability for nuclear excitation by electron transition. 189Os deduced isomer excitation mechanism, Γγ, Γ(isomer)/Γ for other levels. Wiggler synchroton radiation, resonance absorption of photon by nucleus.

doi: 10.1016/0375-9474(87)90225-9
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1987YO04      Phys.Rev. C36, 1657 (1987)

A.Yokoyama, H.Horie

Core-Polarization Effects on Stretched Particle-Hole Excitations in Closed Shell Nuclei

NUCLEAR STRUCTURE 12C, 16O, 28Si, 48,40Ca, 90Zr, 146Gd, 208Pb; calculated stretched particle-hole excitation suppression factors. Configuration mixing model.

doi: 10.1103/PhysRevC.36.1657
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1986SH22      Nucl.Phys. A456, 701 (1986)

A.Shinohara, A.Yokoyama, S.Moriyasu, T.Saito, H.Baba

Fission and Particle Evaporation following Stopped-Negative-Pion Absorption in 209Bi

NUCLEAR REACTIONS 209Bi(π-, F), (π-, xnyp), E at rest; measured γ-rays, pionic X-rays; deduced fission probability, reaction yields. Compared results with model calculation.

doi: 10.1016/0375-9474(86)90082-5
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1985YO01      Phys.Rev. C31, 1012 (1985)

A.Yokoyama, H.Horie

Intruder States of the Odd-Mass N = 27 Isotones

NUCLEAR STRUCTURE 47Ca, 48,49Sc, 49,50Ti, 53,54Fe, 51V, 52Cr, 53Mn, 55Co; calculated levels. 47Ca, 49Ti, 51Cr, 53Fe; calculated B(E2). Shell model, effective interactions.

doi: 10.1103/PhysRevC.31.1012
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1982IW01      Phys.Rev. C25, 658 (1982)

T.Iwamoto, H.Horie, A.Yokoyama

Inelastic Electron Scattering Form Factors for the Excitation of the 2+ States in the 1f7/2 Nuclei

NUCLEAR REACTIONS 42,44,46,48Ca, 46,48,50Ti, 50,52Cr, 54Fe(e, e'), E not given; calculated form factors. Shell model, effective interactions.

NUCLEAR STRUCTURE 42,44,46,48Ca, 46,48,50Ti, 50,52Cr, 54Fe; calculated levels, B(E2), quadrupole moment. Shell model, effective interactions.

doi: 10.1103/PhysRevC.25.658
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1981YO01      Phys.Lett. 99B, 5 (1981)

A.Yokoyama, T.Oda, H.Horie

Effect of Neutron Excitations on the Strength Distributions for Single-Proton Transfer Reactions on the N=28 Nuclei

NUCLEAR REACTIONS 51V(3He, d), E=10.48, 15, 22 MeV; analyzed spectroscopic factor data; deduced neutron excitation effects on proton 2p3/2 strength fragmentation. Shell model.

doi: 10.1016/0370-2693(81)90792-9
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1980YO01      Phys.Lett. 91B, 181 (1980)

A.Yokoyama, M.Horiike, K.Ogawa

Inelastic Electron Scattering from Collective 4+ States

NUCLEAR REACTIONS 56Fe(e, e'), E not given; calculated 0+-4+ collective transition form factors; deduced strong proton, neutron correlations. Shell model.

doi: 10.1016/0370-2693(80)90425-6
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1978YO04      Prog.Theor.Phys. 60, 427 (1978)

A.Yokoyama, T.Oda, H.Horie

Shell-Model Study of the N - 28 Nuclei with Emphasis on High-Spin States

NUCLEAR STRUCTURE 49Sc, 51V, 53Mn, 55Co; calculated energies of high spin states. Shell-model calculation in (f7/2)(f7/2p3/2) space, effective interactions.

doi: 10.1143/PTP.60.427
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1977YO06      Progr.Theor.Phys. 58, 1653 (1977)

A.Yokoyama, T.Oda

Shell-Model Study of High-Spin States in the N ≈8 Region

NUCLEAR STRUCTURE 51V, 53Mn; calculated levels.

doi: 10.1143/PTP.58.1653
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1976AD04      Nucl.Phys. A263, 173 (1976)

M.Adachi, H.Taketani, T.Hattori, T.Matsuzaki, A.Yokoyama, T.Oda

Lifetimes of the First and Second Excited 3/2- States in 55Co

NUCLEAR REACTIONS 54Fe(3He, dγ), E=8.1 MeV; measured Eγ(θ), Doppler shift. 55Co levels deduced T1/2. Enriched target.

doi: 10.1016/0375-9474(76)90191-3
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