NSR Query Results


Output year order : Descending
Format : Normal

NSR database version of May 21, 2024.

Search: Author = A.Yamaguchi

Found 12 matches.

Back to query form



2024YA11      Nature(London) 629, 62 (2024)

A.Yamaguchi, Yu.Shigekawa, H.Haba, H.Kikunaga, K.Shirasaki, M.Wada, H.Katori

Laser spectroscopy of triply charged 229Th isomer for a nuclear clock

RADIOACTIVITY 229Th(IT); measured frequencies; deduced nuclear decay T1/2, the hyperfine constants, reduced the uncertainty of the sensitivity of the nuclear clock to variations in the fine-structure constant by a factor of four with nuclear-state-selective laser spectroscopy.

doi: 10.1038/s41586-024-07296-1
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.


2019MA63      Nature(London) 573, 238 (2019)

T.Masuda, A.Yoshimi, A.Fujieda, H.Fujimoto, H.Haba, H.Hara, T.Hiraki, H.Kaino, Y.Kasamatsu, S.Kitao, K.Konashi, Y.Miyamoto, K.Okai, S.Okubo, N.Sasao, M.Seto, T.Schumm, Y.Shigekawa, K.Suzuki, S.Stellmer, K.Tamasaku, S.Uetake, M.Watanabe, T.Watanabe, Y.Yasuda, A.Yamaguchi, Y.Yoda, T.Yokokita, M.Yoshimura, K.Yoshimura

X-ray pumping of the 229Th nuclear clock isomer

RADIOACTIVITY 229Th(IT); measured decay products, Eγ, Iγ; deduced nuclear resonance scattering curves, active optical pumping into 229mTh, resonance energy and T1/2, branching ratios.

doi: 10.1038/s41586-019-1542-3
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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


2018YO02      Phys.Rev. C 97, 024607 (2018)

A.Yoshimi, H.Hara, T.Hiraki, Y.Kasamatsu, S.Kitao, Y.Kobayashi, K.Konashi, R.Masuda, T.Masuda, Y.Miyamoto, K.Okai, S.Okubo, R.Ozaki, N.Sasao, O.Sato, M.Seto, T.Schumm, Y.Shigekawa, S.Stellmer, K.Suzuki, S.Uetake, M.Watanabe, A.Yamaguchi, Y.Yasuda, Y.Yoda, K.Yoshimura, M.Yoshimura

Nuclear resonant scattering experiment with fast time response: Photonuclear excitation of 201Hg

NUCLEAR REACTIONS 201Hg(γ, γ), E=high brilliance synchrotron radiation; measured decay signals, fluorescence energy spectrum, x-rays, half-life of 26.27-keV state of 201Hg, nuclear resonant scattering (NRS) technique using BL09XU of SPring-8 of Japan Synchrotron Radiation Research Institute (JASRI). 201Hg; deduced level, B(M1), σ(NRS).

doi: 10.1103/PhysRevC.97.024607
Citations: PlumX Metrics

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


2015YA09      New Journal of Physics 17, 053053 (2015)

A.Yamaguchi, M.Kolbe, H.Kaser, T.Reichel, A.Gottwald, E.Peik

Experimental search for the low-energy nuclear transition in 229Th with undulator radiation

NUCLEAR REACTIONS 229Th(γ, γ'), E<15 eV; measured decay products, Eγ, Iγ; deduced lack of signal relating to the lowest energy nuclear isomeric transition in 229Th.

doi: 10.1088/1367-2630/17/5/053053
Citations: PlumX Metrics


2013MA35      Ann.Nucl.Energy 57, 173 (2013)

T.Mai Vu, T.Fujii, K.Wada, T.Kojima, T.Kitada, N.Takaki, A.Yamaguchi, H.Watanabe, H.Unesaki

Accuracy of thorium cross section of JENDL-4.0 library in thorium based fuel core evaluation

NUCLEAR REACTIONS 232Th(n, γ), E<10 MeV; calculated eigenvalues; measured characteristics of two critical cores; deduced underestimated σ value at thermal energy in JENDL-4.0 library.

doi: 10.1016/j.anucene.2013.01.056
Citations: PlumX Metrics


1971YA03      Phys.Rev. C3, 1750 (1971)

A.Yamaguchi, T.Terasawa, K.Nakahara, Y.Torizuka

Excitation of the Giant Resonance in 12C by Inelastic Electron Scattering

NUCLEAR REACTIONS 12C(e, e'), E < 250 MeV; measured σ(E;Ee'); deduced form factors. 12C deduced levels, J, π, giant resonance structure.

doi: 10.1103/PhysRevC.3.1750
Citations: PlumX Metrics


1970TO13      Phys.Rev.Lett. 25, 874 (1970)

Y.Torizuka, A.Yamaguchi, T.Terasawa, Y.Kojima, K.Nakahara, M.Oyamada, K.Itoh, A.Nakada, S.Mitsunobu, M.Kimura

Exitation of the Giant Resonance in 12C by Inelastic Electron Scattering

NUCLEAR REACTIONS 12C(e, e'), E=250 MeV; measured σ(Ee'); deduced inelastic form factors. 12C deduced levels, J, π.

doi: 10.1103/PhysRevLett.25.874
Citations: PlumX Metrics


1969TO01      Phys.Rev.Letters 22, 544(1969)

Y.Torizuka, M.Oyamada, K.Nakahara, K.Sugiyama, Y.Kojima, T.Terasawa, K.Itoh, A.Yamaguchi, M.Kimura

Electroexcitation of the 10.8-MeV (1-;T=0) Level of 12C and the 7.12-MeV (1-;T=0) Level of 16O

NUCLEAR REACTIONS 12C, 16O(e, e'), E=183, 250 MeV; measured σ(Ee'); deduced form factors for E1(ΔT=0) excitation. 12C, 16O deduced levels.

doi: 10.1103/PhysRevLett.22.544
Citations: PlumX Metrics


1969TO08      Phys.Rev. 185, 1499 (1969)

Y.Torizuka, Y.Kojima, M.Oyamada, K.Nakahara, K.Sugiyama, T.Terasawa, K.Itoh, A.Yamaguchi, M.Kimura

Study of Nuclear States in 60Ni by Inelastic Electron Scattering

NUCLEAR REACTIONS 60Ni(e, e'), E = 183, 250 MeV; measured σ(Ee', θ); deduced inelastic form factors. 60Ni deduced levels, B(EL).

doi: 10.1103/PhysRev.185.1499
Citations: PlumX Metrics


1969TO10      Phys.Rev. 188, 1745 (1969)

Y.Torizuka, A.Yamaguchi, K.Nakahara, M.Oyamada, T.Terasawa, K.Itoh, Y.Kojima, M.Kimura

Electroexcitation of the Giant Resonance in 12C

NUCLEAR REACTIONS 12C(e, e'), E=177, 250 MeV; measured σ(Ee', θ). 12C deduced giant resonance structure.

doi: 10.1103/PhysRev.188.1745
Citations: PlumX Metrics


Back to query form