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NSR database version of April 25, 2024.

Search: Author = H.Izumi

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2015HI02      Phys.Rev. C 91, 024328 (2015)

Y.Hirayama, T.Shimoda, H.Miyatake, H.Izumi, A.Hatakeyama, K.P.Jackson, C.D.P.Levy, M.Pearson, M.Yagi, H.Yano

Unexpected spin-parity assignments of the excited states in 9Be

RADIOACTIVITY 9Li(β-), (β-n)[30.5 keV 9Li beam polarized by collinear optical pumping technique]; measured Eβ, E(n) by TOF, I(n), nβ-coin, β-decay asymmetry spectrum as function of TOF at TRIUMF-ISAC facility. 9Be; deduced levels, J, π, β-delayed neutron transitions, asymmetry parameter for each β transition, Iβ, logft. Comparison with previous experimental data, and theoretical shell-model calculations. 5He, 8Be; deduced neutron branching ratios from states in 9Be through n+8Be and α+5He channels to 0+ and first 2+ states in 8Be and 3/2- state in 5He.

doi: 10.1103/PhysRevC.91.024328
Citations: PlumX Metrics

2013UE01      Phys.Rev. C 87, 034316 (2013)

H.Ueno, H.Miyatake, Y.Yamamoto, S.Tanimoto, T.Shimoda, N.Aoi, K.Asahi, E.Ideguchi, M.Ishihara, H.Izumi, T.Kishida, T.Kubo, S.Mitsuoka, Y.Mizoi, M.Notani, H.Ogawa, A.Ozawa, M.Sasaki, T.Shirakura, N.Takahashi, K.Yoneda

β-delayed neutron and γ-ray spectroscopy of 17C utilizing spin-polarized 17B

RADIOACTIVITY 17B(β-), (β-n), (β-2n)[spin polarized 17B beam from β-NMR technique in 93Nb(22Ne, X), E=110 MeV/nucleon reaction]; 16,17C, 17N(β-), (β-n)[from 17B decay]; 15C, 16N(β-)[from 17B decay products]; measured Eγ, Iγ, Eβ, Iβ, E(n) by TOF, I(n), β-NMR, βγ-, βγγ-, βnγ-coin at RIKEN facility. 17C; deduced levels, J, π, widths, P(0n), P(1n), P(2n), B(GT). 15,16C, 15,17N; deduced levels. No γ rays observed for delayed-3n and delayed-4n channels of 17B decay, thus P(3n), P(4n) not determined. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.87.034316
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Data from this article have been entered in the XUNDL database. For more information, click here.

2006IS04      Phys.Lett. B 640, 82 (2006)

H.Ishiyama, T.Hashimoto, T.Ishikawa, Y.X.Watanabe, S.K.Das, H.Miyatake, Y.Mizoi, T.Fukuda, M.-H.Tanaka, Y.Fuchi, N.Yoshikawa, Y.Hirayama, S.C.Jeong, T.Nomura, I.Katayama, S.Mitsuoka, K.Nishio, M.Matsuda, P.K.Saha, S.Ichikawa, H.Ikezoe, T.Furukawa, H.Izumi, T.Shimoda, K.Nakai

A new measurement of the astrophysical 8Li(α, n)11B reaction

NUCLEAR REACTIONS 4He(8Li, n), E(cm)=0.7-2.6 MeV; measured σ(E), particle spectra. Comparison with other results.

doi: 10.1016/j.physletb.2006.07.036
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1933.

2005HI03      Phys.Lett. B 611, 239 (2005)

Y.Hirayama, T.Shimoda, H.Izumi, A.Hatakeyama, K.P.Jackson, C.D.P.Levy, H.Miyatake, M.Yagi, H.Yano

Study of 11Be structure through β-delayed decays from polarized 11Li

RADIOACTIVITY 11Li(β-), (β-n); measured β-delayed Eγ, En, asymmetry following decay of spin-polarized source. 10,11Be deduced levels, J, π, S-factors. Comparison with antisymmetrized molecular dynamics model predictions.

doi: 10.1016/j.physletb.2005.02.040
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Data from this article have been entered in the XUNDL database. For more information, click here.

2004HA54      Nucl.Phys. A746, 330c (2004)

T.Hashimoto, T.Ishikawa, T.Kawamura, K.Nakai, H.Ishiyama, Y.X.Watanabe, H.Miyatake, M.H.Tanaka, N.Yoshikawa, S.C.Jeong, Y.Fuchi, I.Katayama, T.Nomura, S.K.Das, P.K.Saha, T.Fukuda, K.Nishio, S.Mitsuoka, H.Ikezoe, M.Matsuda, S.Ichikawa, T.Furukawa, H.Izumi, T.Shimoda, Y.Mizoi, M.Terasawa

Measurement of the 8Li(α, n)11B reaction cross sections of astrophysical interest

NUCLEAR REACTIONS 4He(8Li, n), E=14.6 MeV; measured excitation energy spectra. 8Li(α, n), E(cm)=0.5-3 MeV; deduced excitation function. Astrophysical implications discussed.

doi: 10.1016/j.nuclphysa.2004.09.040
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1933.

2004HI12      Nucl.Phys. A738, 201 (2004)

Y.Hirayama, T.Shimoda, H.Izumi, H.Yano, M.Yagi, A.Hatakeyama, C.D.P.Levy, K.P.Jackson, H.Miyatake

Spectroscopic study of 11Be through β-delayed neutron and γ-decays of spin-polarized 11Li

RADIOACTIVITY 11Li(β-), (β-n); measured β-delayed En, Eγ, βγ-, nβ-coin following decay of spin-polarized source; deduced log ft. 11Be deduced levels, J, π, neutron spectroscopic factors. 10Be deduced levels, transition intensities.

doi: 10.1016/j.nuclphysa.2004.04.032
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14267.

2004HI24      Nucl.Phys. A746, 71c (2004)

Y.Hirayama, T.Shimoda, H.Izumi, H.Yano, M.Yagi, A.Hatakeyama, C.D.P.Levy, K.P.Jackson, H.Miyatake

Structure of 11Be studied in β-delayed neutron- and γ- decay from polarized 11Li

RADIOACTIVITY 11Li(β-), (β-n); measured β-delayed Eγ, En, asymmetry following decay of spin-polarized source. 10,11Be deduced levels, J, π. Comparison with antisymmetrized molecular dynamics model predictions.

doi: 10.1016/j.nuclphysa.2004.09.018
Citations: PlumX Metrics

2004MI34      Nucl.Phys. A738, 401 (2004)

H.Miyatake, H.Ishiyama, M.-H.Tanaka, Y.X.Watanabe, N.Yoshikawa, S.C.Jeong, Y.Matsuyama, Y.Fuchi, T.Nomura, T.Hashimoto, T.Ishikawa, K.Nakai, S.K.Das, P.K.Saha, T.Fukuda, K.Nishio, S.Mitsuoka, H.Ikezoe, S.Ichikawa, M.Matsuda, Y.Mizoi, T.Furukawa, H.Izumi, T.Shimoda, M.Terasawa

Exclusive measurement of the astrophysical 8Li(α, n) reaction cross section

NUCLEAR REACTIONS 4He(8Li, n), E(cm)=0.9-2.8 MeV; measured σ, excitation energy spectrum. Comparison with previous results.

doi: 10.1016/j.nuclphysa.2004.04.070
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1933.

2003IS12      Nucl.Phys. A718, 481c (2003)

H.Ishiyama, T.Hashimoto, T.Kawamura, T.Ishikawa, H.Miyatake, M.H.Tanaka, Y.Fuchi, N.Yoshikawa, S.C.Jeong, Y.Watanabe, H.Kawakami, I.Katayama, T.Nomura, S.Mitsuoka, K.Nishio, M.Matsuda, S.Ichikawa, H.Ikezoe, T.Furukawa, H.Yano, H.Izumi, Y.Mizoi, M.Terasawa, T.Fukuda, K.Nakai, T.Shimoda

Direct measurements of (α, n) and (p, n) reaction cross sections using light neutron-rich radioactive nuclear beams

NUCLEAR REACTIONS 2H(7Li, 6He), (11B, 12B), (22Ne, 20F), 4He(7Li, 10Be), 9Be(7Li, 8Li), E not given; 2H(18O, 16N), E=73 MeV; calculated radioactive beam yields. Application to further cross section measurements discussed.

doi: 10.1016/S0375-9474(03)00863-7
Citations: PlumX Metrics

2003IS13      Nucl.Phys. A718, 484c (2003)

T.Ishikawa, H.Ishiyama, T.Hashimoto, T.Kawamura, H.Miyatake, M.H.Tanaka, Y.Fuchi, N.Yoshikawa, S.C.Jeong, Y.Watanabe, H.Kawakami, I.Katayama, T.Nomura, S.Mitsuoka, K.Nishio, M.Matsuda, S.Ichikawa, H.Ikezoe, T.Furukawa, H.Yano, H.Izumi, Y.Mizoi, M.Terasawa, T.Fukuda, K.Nakai, T.Shimoda

Measurement of the 16N(α, n) reaction cross section

NUCLEAR REACTIONS 4He(16N, n), E(cm) ≈ 1-4.5 MeV; measured σ.

doi: 10.1016/S0375-9474(03)00864-9
Citations: PlumX Metrics

2003MI01      Phys.Rev. C 67, 014306 (2003)

H.Miyatake, H.Ueno, Y.Yamamoto, N.Aoi, K.Asahi, E.Ideguchi, M.Ishihara, H.Izumi, T.Kishida, T.Kishida, T.Kubo, S.Mitsuoka, Y.Mizoi, M.Notani, H.Ogawa, A.Ozawa, M.Sasaki, T.Shimoda, T.Shirakura, N.Takahashi, S.Tanimoto, K.Yoneda

Spin-parity assignments in 15C* by a new method: β-delayed spectroscopy for a spin-polarized nucleus

RADIOACTIVITY 15B, 17N(β-n) [from 9Be(22Ne, X)]; measured β asymmetry, β-delayed neutron spectra from spin-polarized source. 15C levels deduced J, π. β-NMR technique.

doi: 10.1103/PhysRevC.67.014306
Citations: PlumX Metrics

2003OG03      Phys.Rev. C 67, 064308 (2003)

H.Ogawa, K.Asahi, K.Sakai, T.Suzuki, H.Izumi, H.Miyoshi, M.Nagakura, K.Yogo, A.Goto, T.Suga, T.Honda, H.Ueno, Y.X.Watanabe, K.Yoneda, A.Yoshimi, N.Fukuda, Y.Kobayashi, A.Yoshida, T.Kubo, M.Ishihara, N.Imai, N.Aoi, W.-D.Schmidt-Ott, G.Neyens, S.Teughels

Electric quadrupole moment of 17B and anomalous E2 effective charges for neutron-rich nuclei

RADIOACTIVITY 17B(β-) [from 93Nb(22Ne, X)]; measured β-NMR spectra from polarized source. 17B deduced quadrupole moment. Comparison with shell-model predictions.

doi: 10.1103/PhysRevC.67.064308
Citations: PlumX Metrics

2002OG02      Eur.Phys.J. A 13, 81 (2002)

H.Ogawa, K.Asahi, H.Ueno, K.Sakai, H.Miyoshi, D.Kameda, T.Suzuki, H.Izumi, N.Imai, Y.X.Watanabe, K.Yoneda, N.Fukuda, H.Watanabe, A.Yoshimi, W.Sato, N.Aoi, M.Nagakura, T.Suga, K.Yogo, A.Goto, T.Honda, Y.Kobayashi, W.-D.Schmidt-Ott, G.Neyens, S.Teughels, A.Yoshida, T.Kubo, M.Ishihara

Quenching of Neutron E2 Effective Charge in Neutron-Rich Nuclei and the Ground-State Spin-Parity of 17C

RADIOACTIVITY 17B, 17C(β-) [from 93Nb(22Ne, X)]; measured β-NMR spectra from polarized nuclei. 17B deduced quadrupole moment. 17C deduced g-factor, ground-state J, π. Quenching of core polarization discussed.

doi: 10.1007/s10050-002-8723-3
Citations: PlumX Metrics

2002SH23      Nucl.Phys. A701, 524c (2002)

S.Shimizu, E.Doumoto, M.Yagi, M.Asai, M.Nakamura, Y.Hirayama, K.Horie, T.Shigematsu, H.Izumi, T.Shimoda, N.Takahashi

Spin Polarization of Low-Energy Radioactive Nuclear Beams by Tilted-Foil Technique

doi: 10.1016/S0375-9474(01)01639-6
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2002SH24      Nucl.Phys. A701, 583c (2002)

T.Shimoda, S.Shimizu, E.Doumoto, M.Yagi, M.Asai, M.Nakamura, Y.Hirayama, K.Horie, T.Shigematsu, H.Izumi, N.Takahashi

A Spin Polarizer for Radioactive Nuclear Beams by Taking Advantage of Polarized Electron Transfer Reactions

doi: 10.1016/S0375-9474(01)01649-9
Citations: PlumX Metrics

1999OG03      Phys.Lett. 451B, 11 (1999)

H.Ogawa, K.Asahi, K.Sakai, A.Yoshimi, M.Tsuda, Y.Uchiyama, T.Suzuki, K.Suzuki, N.Kurokawa, M.Adachi, H.Izumi, H.Ueno, T.Shimoda, S.Tanimoto, N.Takahashi, W.-D.Schmidt-Ott, M.Schafer, S.Fukuda, A.Yoshida, M.Notani, T.Kubo, H.Okuno, H.Sato, N.Aoi, K.Yoneda, H.Iwasaki, N.Fukuda, N.Fukunishi, M.Ishihara, H.Miyatake

Magnetic Moment and Electric Quadrupole Moment of the 18N Ground State

RADIOACTIVITY 18N(β-) [from 22Ne fragmentation]; measured β-NMR. 18Ne deduced μ, quadrupole moment.

NUCLEAR REACTIONS 12C(22Ne, X)18N, E=110 MeV/nucleon; measured fragment polarization.

doi: 10.1016/S0370-2693(99)00219-1
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1998OG04      J.Phys.(London) G24, 1399 (1998)

H.Ogawa, K.Asahi, K.Sakai, A.Yoshimi, M.Tsuda, Y.Uchiyama, T.Suzuki, K.Suzuki, N.Kurokawa, M.Adachi, H.Izumi, H.Ueno, T.Shimoda, S.Tanimoto, N.Takahashi, W.-D.Schmidt-Ott, M.Schafer, S.Fukuda, A.Yoshida, M.Notani, T.Kubo, H.Okuno, H.Sato, N.Aoi, K.Yoneda, H.Iwasaki, N.Fukuda, N.Fukunishi, M.Ishihara

Static Moments of the 18N Ground State

RADIOACTIVITY 18N(β-) [from 22Ne primary beam fragmentation]; measured Iβ(H, t). 18N deduced ground-state Q, μ. β-NMR technique.

1998SC19      Phys.Rev. C57, 2205 (1998)

M.Schafer, W.-D.Schmidt-Ott, T.Dorfler, T.Hild, T.Pfeiffer, R.Collatz, H.Geissel, M.Hellstrom, Z.Hu, H.Irnich, N.Iwasa, M.Pfutzner, E.Roeckl, M.Shibata, B.Pfeiffer, K.Asahi, H.Izumi, H.Ogawa, H.Sato, H.Ueno, H.Okuno

Polarization in Fragmentation, g Factor of 35K

NUCLEAR REACTIONS 9Be(40Ca, X)39Ca/35K/37K, E=500 MeV/nucleon; measured fragments beta asymmetry; deduced polarization. 35K deduced g factor. Projectile fragment separator.

RADIOACTIVITY 35K(β+) [from 9Be(40Ca, X)]; measured T1/2. Projectile fragment separator.

doi: 10.1103/PhysRevC.57.2205
Citations: PlumX Metrics

1996IZ01      Phys.Lett. 366B, 51 (1996)

H.Izumi, K.Asahi, H.Ueno, H.Okuno, H.Sato, K.Nagata, Y.Hori, M.Adachi, N.Aoi, A.Yoshida, G.Liu, N.Fukunishi, M.Ishihara

Electric Quadrupole Moments of Neutron-Rich Nuclei 14B and 15B

RADIOACTIVITY 14,15B(β-) [from 93Nb(18O, X), E=64.7 MeV/nucleon]; measured β-NMR, polarized nuclei; deduced electric quadrupole moments. Shell model comparison.

doi: 10.1016/0370-2693(95)01312-1
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1996IZ02      Hyperfine Interactions 97/98, 509 (1996)

H.Izumi, K.Asahi, H.Ueno, H.Okuno, H.Sato, K.Nagata, Y.Hori, M.Adachi, N.Aoi, A.Yoshida, G.Liu, N.Fukunishi, M.Ishihara

Measurement of Electric Quadrupole Moments of Neutron-Rich Nuclei 14B and 15B

RADIOACTIVITY 12,14,15B(β-) [from 93Nb(18O, X), E=64.7 MeV/nucleon]; measured β-NMR, polarized sources. 17N, 17,14,15B deduced electric quadrupole moments. Other data input.

doi: 10.1007/BF02150193
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1996LI67      High Energy Phys. and Nucl.Phys. (China) 20, 778 (1996)

G.Liu, K.Asahi, H.Izumi, H.Ueno, H.Okuno, H.Sato, K.Nagata, Y.Hori, M.Adechi, N.Aoi, A.Yoshida, N.Fukunishi, M.Ishihara

Measurements of Electric Quadrupole Moments of Neutron-Rich Nuclei 14B and 15B

1996UE02      Phys.Rev. C53, 2142 (1996)

H.Ueno, K.Asahi, H.Izumi, K.Nagata, H.Ogawa, A.Yoshimi, H.Sato, M.Adachi, Y.Hori, K.Mochinaga, H.Okuno, N.Aoi, M.Ishihara, A.Yoshida, G.Liu, T.Kubo, N.Fukunishi, T.Shimoda, H.Miyatake, M.Sasaki, T.Shirakura, N.Takahashi, S.Mitsuoka, W.-D.Schmidt-Ott

Magnetic Moments of 17N and 17B

RADIOACTIVITY 17N(β-) [from 93Nb(18O, X), E=64.7 MeV/nucleon]; 17B(β-) [from 93Nb(22Ne, X), E=94.4 MeV/nucleon]; measured NMR; deduced μ. Model comparison.

NUCLEAR STRUCTURE 17N, 17B, 19F; calculated μ. 16,18O; calculated levels. Model comparison.

doi: 10.1103/PhysRevC.53.2142
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1995AS05      Nucl.Phys. A588, 135c (1995)

K.Asahi, H.Ueno, H.Izumi, H.Okuno, K.Nagata, H.Ogawa, Y.Hori, H.Sato, K.Mochinaga, M.Adachi, A.Yoshida, G.Liu, N.Aoi, T.Kubo, M.Ishihara, W.-D.Schmidt-Ott, T.Shimoda, H.Miyatake, S.Mitsuoka, N.Takahashi

Electromagnetic Moments of Unstable Nuclei Studied with Polarized Projectile Fragments

NUCLEAR REACTIONS 197Au(14N, X), E=39.4 MeV/nucleon; 197Au(15N, X), E=68, 109.6 MeV/nucleon; 93Nb(93Nb, X), E=67.3 MeV/nucleon; 27Al(15N, X), E=68 MeV/nucleon; measured ejectile yield, spin polarization spectra vs (p-p0)/p0.

doi: 10.1016/0375-9474(95)00112-E
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1995OK04      Phys.Lett. 354B, 41 (1995)

H.Okuno, K.Asahi, H.Ueno, H.Izumi, H.Sato, M.Adachi, T.Nakamura, T.Kubo, N.Inabe, A.Yoshida, N.Fukunishi, T.Shimoda, H.Miyatake, N.Takahashi, W.-D.Schmidt-Ott, M.Ishihara

Measurement of the Magnetic Moments of 14B and 15B using Projectile Fragmentation Spin Polarization

RADIOACTIVITY 12,14,15B(β-) [from 93Nb(18O, X), E=68 MeV/nucleon]; measured β NMR; deduced μ. Polarized nuclei. Model comparison.

doi: 10.1016/0370-2693(95)00630-4
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1995SH22      Nucl.Phys. A588, 235c (1995)

T.Shimoda, H.Miyatake, S.Mitsuoka, Y.Mizoi, H.Kobayashi, M.Sasaki, T.Shirakura, H.Ueno, H.Izumi, K.Asahi, T.Murakami, S.Morinobu, N.Takahashi

Preservation of Nuclear Spin Polarization of 12B in Superfluid Helium

RADIOACTIVITY 8Li(β-); 12B(β-) [from 9Be(14N, X), E=38.5 MeV/nucleon]; measured β-ray counting rates, β-NMR; deduced 12B spin polarization preservation during T1/2 duration. Source implantation into superfluid helium, ' snowball ' aggregates of He atoms.

doi: 10.1016/0375-9474(95)00145-Q
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