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NSR database version of April 11, 2024.

Search: Author = M.Ogura

Found 30 matches.

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2011MI18      Phys.Rev. C 84, 055501 (2011)

K.Minamisono, T.Nagatomo, K.Matsuta, C.D.P.Levy, Y.Tagishi, M.Ogura, M.Yamaguchi, H.Ota, J.A.Behr, K.P.Jackson, A.Ozawa, M.Fukuda, T.Sumikama, H.Fujiwara, T.Iwakoshi, R.Matsumiya, M.Mihara, A.Chiba, Y.Hashizume, T.Yasuno, T.Minamisono

Low-energy test of second-class current in β decays of spin-aligned 20F and 20Na

RADIOACTIVITY 20F(β-)[from 19F(polarized 2H, p), E=6 MeV]; 20Na(β+)[from Si(p, X), E=500 MeV]; measured Eβ, β(θ), βγ(θ) from nuclear spin-polarized nuclei using β-NMR technique; deduced alignment correlation terms, G-parity-violating, second-class current (SCC) induced tensor term, weak-magnetism term in the framework of the conserved vector current hypothesis. Experiments at UTTAC and TRIUMF facilities.

doi: 10.1103/PhysRevC.84.055501
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2011SU16      Phys.Rev. C 83, 065501 (2011)

T.Sumikama, K.Matsuta, T.Nagatomo, M.Ogura, T.Iwakoshi, Y.Nakashima, H.Fujiwara, M.Fukuda, M.Mihara, K.Minamisono, T.Yamaguchi, T.Minamisono

Test of the conserved vector current hypothesis by a β-ray angular distribution measurement in the mass-8 system

RADIOACTIVITY 8Li(β-), (β-α)[from 7Li(d, p), E=3.5 MeV]; 8B (β+), (β+α)[from 6Li(3He, n), E=4.7 MeV]; measured Eβ, Iβ, β(θ) from spin polarized 8Li and 8B; deduced alignment and βα angular correlation terms and contributing matrix elements, weak magnetism term. β-NMR technique. Comparison with conserved vector current (CVC) predictions.

doi: 10.1103/PhysRevC.83.065501
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2010MA44      Nucl.Phys. A834, 424c (2010)

K.Matsuta, M.Mihara, M.Fukuda, D.Nishimura, R.Matsumiya, T.Nagatomo, T.Ohtsubo, T.Izumikawa, S.Momota, D.M.Zhou, D.Q.Yuan, Y.N.Zheng, Y.Zuo, P.Fan, S.Y.Zhu, A.Kitagawa, M.Kanazawa, M.Torikoshi, S.Sato, K.Minamisono, T.Sumikama, M.Ogura, M.Tanigaki, A.Ozawa, T.Yamaguchi, T.Suzuki, K.Tanaka, M.Takechi, T.Minamisono, Y.Nojiri, P.Levy, T.J.M.Symons, J.R.Alonso, G.F.Krebs

Nuclear structure and fundamental symmetry studied through nuclear moments

RADIOACTIVITY 28P(β+); measured μ; deduced spin components. 13B(β-); measured Eβ, Iβ(θ) from aligned 13B; deduced alignment correlation coefficient, G-parity tensor coupling constant. Discussed 9C-9Li mirror pair μ and spin expectation value.

doi: 10.1016/j.nuclphysa.2010.01.055
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2010MI03      Nucl.Instrum.Methods Phys.Res. A616, 45 (2010)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, M.Mihara, M.Fukuda

Nuclear polarization of short-lived Na isotopes maintained in single crystals for β-NMR spectroscopy

ATOMIC PHYSICS 20,21,26,27,28Na; measured NMR spectra; deduced ground-state magnetic dipole and quadrupole moments.

doi: 10.1016/j.nima.2010.02.101
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2010MI19      Nucl.Phys. A834, 777c (2010)

M.Mihara, K.Matsuta, D.Nishimura, H.Hirano, J.Komurasaki, S.Takahashi, T.Nagatomo, R.Matsumiya, M.Ogura, H.Akai, S.Momota, T.Ohtsubo, T.Izumikawa, D.Zhou, Y.Zheng, D.Yuan, P.Fan, Y.Zuo, S.Zhu, A.Kitagawa, M.Kanazawa, M.Torikoshi, S.Sato, M.Fukuda, D.Ishikawa, T.Minamisono, R.Watanabe, T.Kubo, Y.Nojiri, T.Sumikama, J.R.Alonso, G.F.Crebs, T.J.M.Symons

Nuclear spin-lattice relaxation of light impurities in platinum studied by using polarized unstable nuclear beams

NUCLEAR REACTIONS Pt(25Al, 25Al'), (28P, 28P'), E not given; measured particle polarization from thick target, time- and temperature-dependence; deduced Knight shifts. Polarized beams. Comparison with calculations.

doi: 10.1016/j.nuclphysa.2010.01.144
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2009MI04      Phys.Lett. B 672, 120 (2009)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, M.Mihara, M.Fukuda

Quadrupole moments of neutron-deficient 20, 21Na

NUCLEAR MOMENTS 20,21,27Na [from Si(p, X), E=500 MeV]; measured β-NMR spectra; deduced quadrupole coupling constants and quadrupole moments. Comparison with shell model predictions and data.

doi: 10.1016/j.physletb.2009.01.006
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2007MI49      Hyperfine Interactions 178, 73 (2007)

M.Mihara, K.Matsuta, S.Kumashiro, M.Fukuda, S.Kosakai, Y.Umemoto, M.Yoshikawa, R.Matsumiya, D.Nishimura, J.Komurasaki, D.Ishikawa, M.Ogura, H.Akai, T.Minamisono

Temperature dependence of Knight shifts for 12B in Pt

NUCLEAR MOMENTS 12B(β-); measured β-assymetry for spin polarized nuclei implanted in Pt foil using the β-NMR method.

doi: 10.1007/s10751-008-9660-6
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2007MI50      Hyperfine Interactions 178, 83 (2007)

M.Mihara, K.Matsuta, D.Nishimura, T.Nagatomo, R.Matsumiya, S.Momota, T.Ohtsubo, T.Izumikawa, D.M.Zhou, Y.N.Zheng, M.Ogura, H.Akai, J.Komurasaki, M.Fukuda, D.Ishikawa, Y.Nojiri, H.Hirano, S.Takahashi, R.Watanabe, T.Kubo, S.Y.Zhu, A.Kitagawa, M.Kanazawa, S.Sato, M.Torikoshi, T.Sumikama, T.Minamisono, J.R.Alonso, G.F.Krebs, T.J.M.Symons

Spin-lattice relaxation of 25Al and 28P in Pt

NUCLEAR MOMENTS 25Al, 28P(β+); measured spin lattice relaxation times for spin polarized nuclei implanted in a Pt foil using the β-NMR method.

doi: 10.1007/s10751-008-9662-4
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2007NA39      Hyperfine Interactions 180, 75 (2007)

T.Nagatomo, K.Matsuta, K.Minamisono, T.Sumikama, M.Mihara, A.Ozawa, Y.Tagishi, M.Ogura, R.Matsumiya, M.Fukuda, M.Yamaguchi, T.Yasuno, H.Ohta, Y.Hashizume, H.Fujiwara, A.Chiba, T.Minamisono

β-Ray angular distribution from purely nuclear spin aligned 20F

NUCLEAR MOMENTS 20F(β-); measured β angular distribution from nuclear spin aligned nuclei.

doi: 10.1007/s10751-008-9688-7
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2006SU13      Phys.Rev. C 74, 024327 (2006)

T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, Y.Nakashima, H.Fujiwara, K.Matsuta, T.Minamisono, M.Fukuda, M.Mihara

Electric quadrupole moment of the proton halo nucleus 8B

RADIOACTIVITY 8B(β+), (EC) [from 6Li(3He, n)]; measured β-NQR spectrum from oriented source. 8B deduced electric quadrupole moment.

NUCLEAR MOMENTS 8B; measured β-NQR spectrum from oriented source; deduced electric quadrupole moment.

doi: 10.1103/PhysRevC.74.024327
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2005SU25      Eur.Phys.J. A 25, Supplement 1, 709 (2005)

T.Sumikama, T.Iwakoshi, T.Nagatomo, M.Ogura, Y.Nakashima, H.Fujiwara, K.Matsuta, T.Minamisono, M.Mihara, M.Fukuda, K.Minamisono, T.Yamaguchi

Alignment correlation term in mass A = 8 system and G-parity irregular term

RADIOACTIVITY 8B(ECα) [from 6Li(3He, n)]; 8Li(β-α) [from 7Li(d, p)]; measured β-NMR spectra; angular correlations; deduced limit on G-parity term.

doi: 10.1140/epjad/i2005-06-075-3
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2004MA98      Nucl.Phys. A746, 493c (2004)

K.Matsuta, K.Arimura, T.Nagatomo, K.Akutsu, T.Iwakoshi, S.Kudo, M.Ogura, M.Takechi, K.Tanaka, T.Sumikama, K.Minamisono, T.Miyake, T.Minamisono, M.Fukuda, M.Mihara, A.Kitagawa, M.Sasaki, M.Kanazawa, M.Torikoshi, M.Suda, M.Hirai, S.Momota, Y.Nojiri, A.Sakamoto, M.Saihara, T.Ohtsubo, J.R.Alonso, G.F.Krebs, T.J.M.Symons

Magnetic moment of 33Cl

RADIOACTIVITY 33Cl(EC), (β+) [from 32S(d, n)]; measured Iβ(θ, H, t) from polarized source, β-NMR spectrum. 33Cl deduced μ.

doi: 10.1016/j.nuclphysa.2004.09.075
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2004MB12      Hyperfine Interactions 159, 257 (2004)

K.Matsuta, Y.Nakashima, T.Nagatomo, M.Mihara, S.Kumashiro, H.Fujiwara, M.Ogura, M.Fukuda, T.Minamisono, T.Sumikama, A.Ozawa, K.Yamada, S.Momota, Y.Nojiri, M.Ota, T.Ohtsubo, T.Izumikawa, K.Yoshida, K.Minamisono, T.Suzuki, I.Tanihata, J.R.Alonso, G.F.Krebs, T.J.M.Symons

Magnetic Moment and Spin of the Extremely Proton-Rich Nucleus 23Al

NUCLEAR MOMENTS 23Al; measured β-NMR spectrum; deduced g-factor, dipole magnetic moment. Comparison with shell model calculations.

doi: 10.1007/s10751-005-9115-2
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2004MI50      Nucl.Phys. A746, 501c (2004)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, H.Fujiwara, M.Mihara, M.Fukuda

Quadrupole moments of 20, 21Na

NUCLEAR MOMENTS 20,21Na; measured β-NQR spectra; deduced quadrupole coupling constants, quadrupole moment ratio. Comparison with model predictions, previous results.

doi: 10.1016/j.nuclphysa.2004.09.077
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2004MI51      Nucl.Phys. A746, 673c (2004)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, H.Fujiwara, M.Mihara, M.Fukuda

Alignment correlation term in the β-ray angular distribution from spin aligned 20Na

RADIOACTIVITY 20Na(β+), (EC) [from Si(p, X)]; measured Iβ(θ, H, t) from polarized source; deduced alignment correlation term.

doi: 10.1016/j.nuclphysa.2004.09.049
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2004MI59      Hyperfine Interactions 159, 261 (2004)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, H.Fujiwara, M.Mihara, M.Fukuda

Production of Nuclear Polarization of Na Isotopes at ISAC/TRIUMF and its Hyperfine Interaction

NUCLEAR MOMENTS 20,21,26,27,28Na; measured Ie, Ee, polarization; deduced 20Na ground state quadrupole moment Q, hyperfine levels. β-NMR technique.

doi: 10.1007/s10751-005-9107-2
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2004NA37      Nucl.Phys. A746, 505c (2004)

T.Nagatomo, K.Matsuta, K.Akutsu, T.Iwakoshi, Y.Nakashima, T.Sumikama, M.Ogura, M.Mihara, H.Fujiwara, S.Kumashiro, K.Minamisono, T.Minamisono, M.Fukuda, M.Miyake, S.Momota, Y.Nojiri, A.Kitagawa, M.Sasaki, M.Torikoshi, M.Kanazawa, M.Suda, S.Sato, M.Hirai, T.J.M.Symons, G.F.Krebs, J.R.Alonso, S.Y.Zhu, J.Z.Zhu, Y.J.Xu, Y.N.Zheng

Nuclear spin orientation of 12, 13B created in heavy ion collisions

NUCLEAR REACTIONS Be(13C, X)12B, E=100 MeV/nucleon; Be(15N, X)13B, E=100 MeV/nucleon; measured fragment polarization, alignment vs momentum. Comparison with model predictions.

doi: 10.1016/j.nuclphysa.2004.09.078
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2004NA38      Nucl.Phys. A746, 509c (2004)

T.Nagatomo, K.Matsuta, K.Akutsu, T.Iwakoshi, Y.Nakashima, T.Sumikama, M.Ogura, M.Mihara, H.Fujiwara, S.Kumashiro, K.Minamisono, T.Minamisono, M.Fukuda, M.Miyake, S.Momota, Y.Nojiri, A.Kitagawa, M.Sasaki, M.Torikoshi, M.Kanazawa, M.Suda, S.Sato, M.Hirai, T.J.M.Symons, G.F.Krebs, J.R.Alonso, S.Y.Zhu, J.Z.Zhu, Y.J.Xu, Y.N.Zheng

Precise nuclear moments of 13B and the β-ray angular distribution

RADIOACTIVITY 13B(β-) [from 9Be(15N, X)]; measured Iβ(θ, H, t), β-NMR and β-NQR spectra from polarized source. 13B deduced quadrupole moment, μ.

doi: 10.1016/j.nuclphysa.2004.09.079
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2004NA46      Hyperfine Interactions 159, 269 (2004)

T.Nagatomo, T.Sumikama, M.Ogura, K.Matsuta, Y.Nakashima, K.Akutsu, T.Iwakoshi, H.Fujiwara, T.Minamisono, M.Fukuda, M.Mihara, K.Minamisono, T.Miyake, S.Momota, Y.Nojiri, A.Kitagawa, M.Sasaki, M.Torikoshi, M.Kanazawa, M.Suda, M.Hirai, S.Sato, S.Y.Zhu, J.Z.Zhu, Y.J.Xu, Y.N.Zheng, J.R.Alonso, G.F.Krebs, T.M.Symons

Precise Nuclear Quadrupole Moments of 8B and 13B

NUCLEAR REACTIONS 6Li(3He, n)8B, E=4.7 MeV; Be(15N, X)13B, E=100 MeV/nucleon; measured reaction products, Ie, Ee; deduced momentum deviation.

NUCLEAR MOMENTS 8,13B; measured Ie, Ee; deduced β-ray asymmetry, 8,13B ground state quadrupole moment Q and ratios for 8B/12B and 13B/12B. Comparison with OXBASH shell model calculations.

doi: 10.1007/s10751-005-9109-0
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2004NA47      Hyperfine Interactions 159, 273 (2004)

T.Nagatomo, K.Matsuta, Y.Nakashima, T.Sumikama, M.Ogura, K.Akutsu, T.Iwakoshi, H.Fujiwara, T.Minamisono, M.Fukuda, M.Mihara, T.Miyake, K.Minamisono, S.Momota, Y.Nojiri, A.Kitagawa, M.Sasaki, M.Torikoshi, M.Kanazawa, M.Suda, M.Hirai, S.Sato, S.Y.Zhu, J.Z.Zhu, Y.J.Xu, Y.N.Zheng, J.R.Alonso, G.F.Krebs, T.M.Symons

Nuclear Spin Orientation Created in Heavy Ion Collisions and the Sign of the Q Moment of 13B

NUCLEAR REACTIONS Be(15N, X)13B, E=100 MeV/nucleon; measured reaction products, Ie, Ee; deduced β-ray asymmetry.

NUCLEAR MOMENTS 13B; measured Ie, Ee, polarization; deduced quadrupole moment Q sign of 13B ground state. β-NMR technique.

doi: 10.1007/s10751-005-9110-7
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2004OG13      Hyperfine Interactions 159, 235 (2004)

M.Ogura, T.Nagatomo, K.Minamisomo, K.Matsuta, T.Minamisono, Y.Nakashima, C.D.P.Levy, T.Sumikama, M.Mihara, H.Fujiwara, S.Kumashiro, M.Fukuda, J.A.Behr, K.P.Jackson, S.Momota, Y.Nojiri, T.Ohtsubo, M.Ohta, A.Kitagawa, M.Kanazawa, M.Torikoshi, S.Sato, M.Suda, J.R.Alonso, G.F.Krebs, T.M.Symons

Quadrupole Moments of Na Isotopes

NUCLEAR MOMENTS 20,21,25Na; measured electric quadrupole coupling constants; deduced the ratio of Q ratio 20Na/21Na and 25Na/21Na. β-NMR technique.

doi: 10.1007/s10751-005-9105-4
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2004SU29      Nucl.Phys. A746, 681c (2004)

T.Sumikama, T.Iwakoshi, T.Nagatomo, M.Ogura, Y.Nakashima, H.Fujiwara, K.Matsuta, T.Minamisono, M.Mihara, M.Fukuda, K.Minamisono, T.Yamaguchi

Beta-ray angular distributions of spin aligned 8Li and 8B

RADIOACTIVITY 8Li, 8B(βα) [from 6Li(3He, n) and 7Li(d, p)]; measured Eβ, βα-coin, angular correlations following decay of polarized source; deduced alignment correlation terms.

doi: 10.1016/j.nuclphysa.2004.09.050
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2003MI24      Nucl.Phys. A721, 477c (2003)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Mihara, M.Fukuda, K.Koshigiri, M.Morita

G-Parity Irregular Current in the β Decays of the Mass A = 12 System - with the Refined Empirical Value of the Weak Magnetism -

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured Eβ, angular distributions from spin-aligned sources; deduced G-parity irregular induced tensor coefficient.

doi: 10.1016/S0375-9474(03)01103-5
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2002MI01      Phys.Rev. C65, 015209 (2002)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Fukuda, M.Mihara, K.Koshigiri

In-Medium Nucleon Mass Renormalization Detected in β Decays of Spin Aligned 12B and 12N

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured Eβ, angular distributions from spin-aligned sources; deduced axial charge, in-medium mass renormalization.

doi: 10.1103/PhysRevC.65.015209
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2002MI03      Phys.Rev. C65, 015501 (2002)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Fukuda, M.Mihara, K.Koshigiri, M.Morita

New Limit of the G-Parity Irregular Weak Nucleon Current Detected in β Decays of Spin Aligned 12B and 12N

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured Eβ, angular distributions from spin-aligned sources; deduced tensor form factor, constraints on Kubodera-Delorme-Rho parameters.

doi: 10.1103/PhysRevC.65.015501
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2002MI36      Z.Naturforsch. 57a, 557 (2002)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Mihara, M.Fukuda, K.Koshigiri, M.Morita

Spin Manipulation by Use of Nuclear Quadrupole Interactions - Quarks and Medium Effects in the Nucleus

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(EC) [from 10B(3He, n)]; measured Eβ, Iβ(θ, H, t) from oriented nuclei; deduced alignment correlation terms, axial charge, in-medium nucleon mass renormalization.


2002MI37      Z.Naturforsch. 57a, 595 (2002)

T.Minamisono, K.Matsuta, K.Minamisono, S.Kudo, M.Ogura, S.Fukuda, K.Sato, M.Mihara, M.Fukuda, S.Takeda, S.Y.Zhu

Quadrupole Moments of the 40Ca Core Plus One Nucleon Nuclei 41Sc and 41Ca

NUCLEAR MOMENTS 41Sc, 41Ca; measured NMR and NQR spectra; deduced quadrupole moments, electric field gradients in TiO2 crystals.


2002OG08      Z.Naturforsch. 57a, 599 (2002)

M.Ogura, K.Minamisono, T.Sumikama, T.Nagatomo, T.Iwakoshi, T.Miyake, S.Kudo, K.Akutsu, K.Sato, M.Mihara, M.Fukuda, K.Matsuta, H.Akai, T.Minamisono

Development of a Nuclear Spin Dewar: Hyperfine Interactions of the Short-Lived β Emitter 12B in TiO2

NUCLEAR MOMENTS 12B(β-); measured β-NMR spectra, asymmetry vs temperature for source implanted in TiO2; deduced polarization.


2001MI40      Hyperfine Interactions 136/137, 225 (2001)

T.Minamisono, K.Matsuta, K.Minamisono, S.Kudo, M.Ogura, S.Fukuda, K.Sato, M.Mihara, M.Fukuda

Precise Quadrupole Moment of the Doubly Closed Shell Plus One Proton Nucleus 41Sc

NUCLEAR MOMENTS 45Sc; measured Fourier-transformed pulse-NMR spectrum in TiO2 crystal. 41Sc; analyzed β-NQR data; deduced quadrupole moment. Comparison with model prediction.

doi: 10.1023/A:1020588417313
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2001OG12      Hyperfine Interactions 136/137, 195 (2001)

M.Ogura, K.Minamisono, T.Sumikama, T.Nagatomo, T.Iwakoshi, T.Miyake, K.Hashimoto, S.Kudo, K.Arimura, M.Ota, K.Akutsu, K.Sato, M.Mihara, M.Fukuda, K.Matsuta, H.Akai, T.Minamisono

A Possible Nuclear Spin Dewar. Hyperfine Interactions of Short-Lived β Emitter 8Li and 12B in TiO2

RADIOACTIVITY 8Li, 12B(β-) [from 7Li, 11B(dp)]; measured β-NMR spectra from oriented sources.

doi: 10.1023/A:1020528231425
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