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NSR database version of April 11, 2024.

Search: Author = H.Miyatake

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2024IM02      Phys.Lett. B 850, 138470 (2024)

N.Imai, M.Dozono, S.Michimasa, T.Sumikama, S.Ota, S.Hayakawa, J.W.Hwang, K.Iribe, C.Iwamoto, S.Kawase, K.Kawata, N.Kitamura, S.Masuoka, K.Nakano, P.Schrock, D.Suzuki, R.Tsunoda, K.Wimmer, D.S.Ahn, O.Beliuskina, N.Chiga, N.Fukuda, E.Ideguchi, K.Kusaka, H.Miki, H.Miyatake, D.Nagae, S.Ohmika, M.Ohtake, H.J.Ong, H.Otsu, H.Sakurai, H.Shimizu, Y.Shimizu, X.Sun, H.Suzuki, M.Takaki, H.Takeda, S.Takeuchi, T.Teranishi, Y.Watanabe, Y.X.Watanabe, K.Yako, H.Yamada, H.Yamaguchi, L.Yang, R.Yanagihara, Y.Yanagisawa, K.Yoshida, S.Shimoura

Neutron capture reaction cross-section of 79Se through the 79Se(d, p) reaction in inverse kinematics

NUCLEAR REACTIONS 2H(77Se, p), (79Se, p), E=20 MeV/nucleon; measured reaction products, Eγ, Iγ. 78,80Se; deduced γ-ray energies, γ-emission probabilities, σ, isomer ratio. Comparison with available data, TALYS and code DWUCK5 calculations. The surrogate-ratio method, the RI Beam Factory operated by the RIKEN Nishina Center and the Center for Nuclear Studies (CNS), University of Tokyo, by employing the novel "optimized energy degrading optics" (OEDO) for radioactive isotope (RI) beams.

doi: 10.1016/j.physletb.2024.138470
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2024XI06      Phys.Rev. C 109, 035804 (2024)

W.Xian, S.Chen, S.Nikas, M.Rosenbusch, M.Wada, H.Ishiyama, D.Hou, S.Iimura, S.Nishimura, P.Schury, A.Takamine, S.Yan, F.Browne, P.Doornenbal, F.Flavigny, Y.Hirayama, Y.Ito, S.Kimura, T.M.Kojima, J.Lee, J.Liu, H.Miyatake, S.Michimasa, J.Y.Moon, S.Naimi, T.Niwase, T.Sonoda, D.Suzuki, Y.X.Watanabe, V.Werner, K.Wimmer, H.Wollnik

Mass measurements of neutron-rich A ≈ 90 nuclei constrain element abundances

doi: 10.1103/PhysRevC.109.035804
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2023HO11      Phys.Rev. C 108, 054312 (2023)

D.S.Hou, A.Takamine, M.Rosenbusch, W.D.Xian, S.Iimura, S.D.Chen, M.Wada, H.Ishiyama, P.Schury, Z.M.Niu, H.Z.Liang, S.X.Yan, P.Doornenbal, Y.Hirayama, Y.Ito, S.Kimura, T.M.Kojima, W.Korten, J.Lee, J.J.Liu, Z.Liu, S.Michimasa, H.Miyatake, J.Y.Moon, S.Naimi, S.Nishimura, T.Niwase, T.Sonoda, D.Suzuki, Y.X.Watanabe, K.Wimmer, H.Wollnik

First direct mass measurement for neutron-rich 112Mo with the new ZD-MRTOF mass spectrograph system

doi: 10.1103/PhysRevC.108.054312
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2023II01      Phys.Rev.Lett. 130, 012501 (2023)

S.Iimura, M.Rosenbusch, A.Takamine, Y.Tsunoda, M.Wada, S.Chen, D.S.Hou, W.Xian, H.Ishiyama, S.Yan, P.Schury, H.Crawford, P.Doornenbal, Y.Hirayama, Y.Ito, S.Kimura, T.Koiwai, T.M.Kojima, H.Koura, J.Lee, J.Liu, S.Michimasa, H.Miyatake, J.Y.Moon, S.Naimi, S.Nishimura, T.Niwase, A.Odahara, T.Otsuka, S.Paschalis, M.Petri, N.Shimizu, T.Sonoda, D.Suzuki, Y.X.Watanabe, K.Wimmer, H.Wollnik

Study of the N=32 and N=34 Shell Gap for Ti and V by the First High-Precision Multireflection Time-of-Flight Mass Measurements at BigRIPS-SLOWRI

ATOMIC MASSES 55Sc, 56,58Ti, 56,57,58,59V; measured TOF; deduced masses, nonexistence of the N=34 empirical two-neutron shell gaps for Ti and V, and the enhanced energy gap in Ca. Comparison with new Monte Carlo shell model calculations. RIKEN's Radioactive Isotope Beam Factory (RIBF).

doi: 10.1103/PhysRevLett.130.012501
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2023NI04      Phys.Rev.Lett. 130, 132502 (2023)

T.Niwase, Y.X.Watanabe, Y.Hirayama, M.Mukai, P.Schury, A.N.Andreyev, T.Hashimoto, S.Iimura, H.Ishiyama, Y.Ito, S.C.Jeong, D.Kaji, S.Kimura, H.Miyatake, K.Morimoto, J.-Y.Moon, M.Oyaizu, M.Rosenbusch, A.Taniguchi, M.Wada

Discovery of New Isotope 241U and Systematic High-Precision Atomic Mass Measurements of Neutron-Rich Pa-Pu Nuclei Produced via Multinucleon Transfer Reactions

NUCLEAR REACTIONS 198Pt(238U, X)235U/236U/237U/238U/239U/240U/241U/242U/235Pa/236Pa/237Pa/239Np/240Np/241Np/239Pu/240Pu/241Pu/242Pu, E=10.75 MeV/nucleon; measured reaction products, TOF. 241U; deduced new isotope production. The KEK Isotope Separation System (KISS) for the nuclear spectroscopy of nuclides produced via MNT reactions, installed at the RIKEN Nishina Center.

ATOMIC MASSES 235,236,237,238,239,240,241,242U, 235,236,237Pa, 239,240,241Np, 239,240,241,242Pu; measured frequencies (the first excitation step laser wavelength), TOF; deduced mass excesses. Comparison with AME2020 evaluation.

doi: 10.1103/PhysRevLett.130.132502
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2022HI07      Phys.Rev. C 106, 034326 (2022)

Y.Hirayama, M.Mukai, Y.X.Watanabe, P.Schury, H.Nakada, J.Y.Moon, T.Hashimoto, S.Iimura, S.C.Jeong, M.Rosenbusch, M.Oyaizu, T.Niwase, M.Tajima, A.Taniguchi, M.Wada, H.Miyatake

In-gas-cell laser resonance ionization spectroscopy of 200, 201Pt

NUCLEAR MOMENTS 198,200,201Pt; measured time-of-flight (TOF) spectra for ions with mass-to-charge-ratios, laser resonance ionization spectra using Multireflection time-of-flight mass spectrograph (MRTOF-MS) at KEK Isotope Separation System (KISS) of RIKEN facility. 200,201Pt; deduced differential mean-square charge radii and isotope shifts relative to those of 198Pt, magnetic dipole and electric quadrupole moments of 201Pt, β2 deformation parameters Comparison with theoretical calculations using symmetry-conserving configuration-mixing (SCCM) with Gogny D1S energy density functionals (SCCM+Gogny D1S), finite-range droplet model (FRDM), and constrained-Hartree-Fock-Bogoliubov (CHFB) theory with five-dimensional collective Hamiltonian (5DCH) based on the Gogny D1 interaction. 201Pt; deduced most likely spin-parity of 5/2-. 198,200,201Pt produced in 198Pt(136Xe, X), E=10.75 MeV/nucleon multi-nucleon transfer reactions.

doi: 10.1103/PhysRevC.106.034326
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2022MU10      Phys.Rev. C 105, 034331 (2022)

M.Mukai, Y.Hirayama, Y.X.Watanabe, H.Watanabe, H.Koura, S.C.Jeong, H.Miyatake, M.Brunet, S.Ishizawa, F.G.Kondev, G.J.Lane, Yu.A.Litvinov, T.Niwase, M.Oyaizu, Zs.Podolyak, M.Rosenbusch, P.Schury, M.Wada, P.M.Walker

Ground-state β-decay spectroscopy of 187Ta

RADIOACTIVITY 187Ta(β-)[from W(136Xe, X), E=7.2 MeV/nucleon]; measured Eγ, Iγ, βγ-coin; deduced Iβ feedings, T1/2, logft, Iγ/β-decay. 187W; deduced Eγ, multipolarities, total conversion coefficients (BrIcc calculations). Comparison to KTUY+gross theory, FRDM+QRPA and RHB+pn-RQRPAKEK calculations. Isotope Separation System (KISS) at RIKEN, an argon-gas-cell-based laser ion source combined with an on-line isotope separator.

doi: 10.1103/PhysRevC.105.034331
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2021AH02      Phys.Rev. C 103, 054312 (2021)

M.Ahmed, Y.X.Watanabe, Y.Hirayama, M.Mukai, J.H.Park, P.Schury, Y.Kakiguchi, A.Ozawa, M.Oyaizu, M.Wada, H.Miyatake

β-γ spectroscopy of the 195Os nucleus

RADIOACTIVITY 195Os(β-)[ionized 195Os using laser system from 198Pt(136Xe, X), E=9.4 MeV/nucleon at the KEK isotope separation system (KISS) at RIKEN RIBF facility]; measured Eβ, Iβ, Eγ, Iγ, x rays, βγ- and γγ-coin, half-life of 195Os decay using a multisegmented proportional gas counter (MSPGC) for β radiation, and four clover HPGe detectors for γ rays. 195Ir; deduced levels, J, π, Iβ feedings, logft. 195Os; deduced spin and parity of the ground state. Systematics of half-lives of 195,196,197,198,199,200,201,202,203,204,205,206Os, and comparison with theoretical predictions.

doi: 10.1103/PhysRevC.103.054312
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2021HI05      Nucl.Instrum.Methods Phys.Res. A997, 165152 (2021)

Y.Hirayama, P.Schury, M.Mukai, H.Choi, S.Iimura, Y.X.Watanabe, M.Wada, H.Watanabe, H.Miyatake

Three-dimensional tracking multi-segmented proportional gas counter for β-decay spectroscopy of unstable nuclei

RADIOACTIVITY 196Ir(β-); measured decay products, Eβ, Iβ; deduced T1/2 and uncertainties.

doi: 10.1016/j.nima.2021.165152
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2021NI08      Phys.Rev. C 104, 044617 (2021)

T.Niwase, M.Wada, P.Schury, P.Brionnet, S.D.Chen, T.Hashimoto, H.Haba, Y.Hirayama, D.S.Hou, S.Iimura, H.Ishiyama, S.Ishizawa, Y.Ito, D.Kaji, S.Kimura, J.Liu, H.Miyatake, J.Y.Moon, K.Morimoto, K.Morita, D.Nagae, M.Rosenbusch, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik, W.Xian, S.X.Yan

α-decay-correlated mass measurement of 206, 207g, mRa using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system

ATOMIC MASSES 206,207,207mRa; measured time-of-flight spectra by α-decay-correlated mass spectroscopy using multireflection time-of-flight mass spectrograph (MRTOF-MS) system, with an α-TOF detector at SHE-Mass-II facility of RIBF-RIKEN; deduced mass excesses, and compared with evaluated data in AME2020. 207mRa; deduced excitation energy of the isomer, J, π. 206,207,207mRa isotopes produced in 159Tb(51V, X), E=306 MeV, followed by separation of evaporation residues using recoil ion separator GARIS-II at RIKEN.

RADIOACTIVITY 206,207mRa(α)[from 159Tb(51V, X), E=306 MeV at RIBF-RIKEN]; measured Eα, Iα, T1/2 of decays of 206Ra and 207mRa, excitation energy of the isomer; deduced α-reduced width, configuration. Systematics of spins, parities, Eα, T1/2, α-branching ratios, reduced α widths for 203,203m,205,205m,207,207mRa. 198,199Po, 202,203At, 202,203Rn, 206,207Fr, 207Ra; observed α spectra from decays.

doi: 10.1103/PhysRevC.104.044617
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2021SC14      Phys.Rev. C 104, L021304 (2021)

P.Schury, T.Niwase, M.Wada, P.Brionnet, S.Chen, T.Hashimoto, H.Haba, Y.Hirayama, D.S.Hou, S.Iimura, H.Ishiyama, S.Ishizawa, Y.Ito, D.Kaji, S.Kimura, H.Koura, J.J.Liu, H.Miyatake, J.-Y.Moon, K.Morimoto, K.Morita, D.Nagae, M.Rosenbusch, A.Takamine, Y.X.Watanabe, H.Wollnik, W.Xian, S.X.Yan

First high-precision direct determination of the atomic mass of a superheavy nuclide

ATOMIC MASSES 257Db; measured Eα, time-of flight, distribution of time-of-flight (ToF)-correlated α-decay events using multireflection time-of-flight mass spectrograph (MRTOF-MS) at RIKEN Ring Cyclotron facility; deduced A/q and mass excess for each of the 11 observed correlated events assigned to 257Db. Comparison with AME2016 evaluated data. 257Db isotope produced in 208Pb(51V, 2n), E=306 MeV reaction, followed by separation of fragments using GARIS-II separator.

doi: 10.1103/PhysRevC.104.L021304
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2021WA15      Phys.Lett. B 814, 136088 (2021)

H.Watanabe, Y.X.Watanabe, Y.Hirayama, A.N.Andreyev, T.Hashimoto, F.G.Kondev, G.J.Lane, Yu.A.Litvinov, J.J.Liu, H.Miyatake, J.Y.Moon, A.I.Morales, M.Mukai, S.Nishimura, T.Niwase, M.Rosenbusch, P.Schury, Y.Shi, M.Wada, P.M.Walker

Beta decay of the axially asymmetric ground state of 192Re

RADIOACTIVITY 192Re(β-) [from Pt(136Xe, X)192Re, E=10.75 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced γ-ray energies and intensities, level scheme, J, π. Comparison with single-particle structure using the nuclear Skyrme-Hartree-Fock model. KEK Isotope Separation System (KISS) in RIKEN Nishina Center.

doi: 10.1016/j.physletb.2021.136088
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2021WA39      Phys.Rev. C 104, 024330 (2021)

Y.X.Watanabe, P.M.Walker, Y.Hirayama, M.Mukai, H.Watanabe, G.J.Lane, M.Ahmed, M.Brunet, T.Hashimoto, S.Ishizawa, S.Kimura, F.G.Kondev, Yu.A.Litvinov, H.Miyatake, J.Y.Moon, T.Niwase, M.Oyaizu, J.H.Park, Zs.Podolyak, M.Rosenbusch, P.Schury, M.Wada

First direct observation of isomeric decay in neutron-rich odd-odd 186Ta

RADIOACTIVITY 186Ta(β-), 186mTa(IT)[from W(136Xe, X), E=7.2 MeV/nucleon, followed by laser ionization and mass separation at the KEK Isotope Separation System (KISS) of RIBF-RIKEN facility]; measured Eγ, Iγ, (particle)γ-coin, half-lives of decays of 186Ta and neutral 186mTa from γ-decay curves. 186Ta; deduced levels, J, π, E3 multipolarity of the 161-keV isomeric transition from a comparison of measured half-life of the neutral isomer with previous measurements of the ionized isomeric state of 186Ta using the Experimental Storage Ring at GSI Darmstadt, no evidence found for the β decay mode of the 186Ta isomer.

doi: 10.1103/PhysRevC.104.024330
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2020CH33      Phys.Rev. C 102, 034309 (2020)

H.Choi, Y.Hirayama, S.Choi, T.Hashimoto, S.C.Jeong, H.Miyatake, J.Y.Moon, M.Mukai, T.Niwase, M.Oyaizu, M.Rosenbusch, P.Schury, A.Taniguchi, Y.X.Watanabe, M.Wada

In-gas-cell laser ionization spectroscopy of 194, 196Os isotopes by using a multireflection time-of-flight mass spectrograph

NUCLEAR MOMENTS 194,196Os; measured laser resonance spectra, time-of-flight spectra using the in-gas-cell laser ionization method and multireflection time-of-flight mass spectrograph (MRTOF-MS); deduced isotope shifts, change in mean-square charge radii and quadrupole deformation parameters. 194,196Os produced in 198Pt(136Xe, X), E=10.75 MeV/nucleon reaction at the KEK Isotope Separation System (KISS). 188,189,190,192,194,196Os; systematics of the change in mean-square charge radii and quadrupole deformation parameters, and their comparison with theoretical calculations.

doi: 10.1103/PhysRevC.102.034309
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2020HI01      Nucl.Instrum.Methods Phys.Res. B463, 425 (2020)

Y.Hirayama, Y.X.Watanabe, M.Mukai, P.Schury, M.Ahmed, H.Ishiyama, S.C.Jeong, Y.Kakiguchi, S.Kimura, J.Y.Moon, M.Oyaizu, J.H.Park, M.Wada, H.Miyatake

Nuclear spectroscopy of r-process nuclei using KEK Isotope Separation System

NUCLEAR REACTIONS 198Pt(136Xe, X)196Os/197Os/198Os/198Pt/199Pt, E=10.75 MeV/nucleon; measured reaction products, Eβ, Iβ, Eγ, Iγ; deduced T1/2 for osmium, HFS spectra for platinum.

doi: 10.1016/j.nimb.2019.04.035
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2020MU16      Phys.Rev. C 102, 054307 (2020)

M.Mukai, Y.Hirayama, Y.X.Watanabe, S.Schiffmann, J.Ekman, M.Godefroid, P.Schury, Y.Kakiguchi, M.Oyaizu, M.Wada, S.C.Jeong, J.Y.Moon, J.H.Park, H.Ishiyama, S.Kimura, H.Ueno, M.Ahmed, A.Ozawa, H.Watanabe, S.Kanaya, H.Miyatake

In-gas-cell laser resonance ionization spectroscopy of 196, 197, 198Ir

NUCLEAR MOMENTS 196,197,198Ir; measured hyperfine structure (HFS) spectra using in-gas-cell laser resonance ionization spectroscopy at the KEK Isotope Separation System at RIBF-RIKEN facility; deduced spins for the ground states, magnetic dipole moments, mean-square charge radii, isotope shifts, β2 deformation parameters. Comparison with theoretical calculations based on the strong coupling model. Comparison with previous experimental results. Systematics of quadrupole moments, magnetic dipole moments, mean-square charge radii and β2 deformation parameters for 189,191,193,196,197,198Ir.

NUCLEAR REACTIONS 198Pt(136Xe, X)196Ir/197Ir/198Ir, E=10.75 MeV/nucleon; measured extraction yields, Eβ, half-lives of the decays of 196Ir, 197Ir and 198Ir. The Ir isotopes produced in multi-nucleon transfer reaction. Comparison with previous experimental half-lives.

doi: 10.1103/PhysRevC.102.054307
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2020WA12      Phys.Rev. C 101, 041305 (2020), Erratum Phys.Rev. C 103, 019902 (2021)

Y.X.Watanabe, M.Ahmed, Y.Hirayama, M.Mukai, J.H.Park, P.Schury, Y.Kakiguchi, S.Kimura, A.Ozawa, M.Oyaizu, M.Wada, H.Miyatake

Deexcitation γ-ray transitions from the long-lived Iπ = 13/2+ metastable state in 195Os

RADIOACTIVITY 195mOs(IT)[from 198Pt(136Xe, X), E=9.4 MeV/nucleon, followed by separation of fragments using KEK Isotope Separation System (KISS) at RIBF-RIKEN facility, and laser excitation of 195Os isomer]; measured Eγ, Iγ, ce, γγ- and (ce)γ-coin, neutral atom T1/2 of the 47-s, (13/2+) isomer from x-ray and γ-ray decay curves using multi-segmented proportional gas counter (MSPGC) for β, x-rays and conversion electrons, and four HPGe clover detectors for γ radiation. 195Os; deduced levels, J, π; discussed multipolarity of the low-energy γ transition from the isomer. Comparison with previous measurement of the 195mOs isomer and half-life of the fully-stripped isomer using the ESR at GSI. Comparison with experimental results for level schemes from the decays of the 13/2+ isomers in 197Pt and 199Hg.

doi: 10.1103/PhysRevC.101.041305
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2020WA29      Phys.Rev.Lett. 125, 192505 (2020)

P.M.Walker, Y.Hirayama, G.J.Lane, H.Watanabe, G.D.Dracoulis, M.Ahmed, M.Brunet, T.Hashimoto, S.Ishizawa, F.G.Kondev, Y.A.Litvinov, H.Miyatake, J.Y.Moon, M.Mukai, T.Niwase, J.H.Park, Z.Podolyak, M.Rosenbusch, P.Schury, M.Wada, X.Y.Watanabe, W.Y.Liang, F.R.Xu

Properties of 187Ta Revealed through Isomeric Decay

RADIOACTIVITY 187Ta(IT) [from W(136Xe, X), E=7.2 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ, γ-γ-, β-γ-coin.; deduced level energies, J, π, T1/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.125.192505
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2019MA58      Phys.Rev. C 100, 024602 (2019)

M.Mazzocco, N.Keeley, A.Boiano, C.Boiano, M.La Commara, C.Manea, C.Parascandolo, D.Pierroutsakou, C.Signorini, E.Strano, D.Torresi, H.Yamaguchi, D.Kahl, L.Acosta, P.Di Meo, J.P.Fernandez-Garcia, T.Glodariu, J.Grebosz, A.Guglielmetti, Y.Hirayama, N.Imai, H.Ishiyama, N.Iwasa, S.C.Jeong, H.M.Jia, Y.H.Kim, S.Kimura, S.Kubono, G.La Rana, C.J.Lin, P.Lotti, G.Marquinez-Duran, I.Martel, H.Miyatake, M.Mukai, T.Nakao, M.Nicoletto, A.Pakou, K.Rusek, Y.Sakaguchi, A.M.Sanchez-Benitez, T.Sava, O.Sgouros, V.Soukeras, F.Soramel, E.Stiliaris, L.Stroe, T.Teranishi, N.Toniolo, Y.Wakabayashi, Y.X.Watanabe, L.Yang, Y.Y.Yang, H.Q.Zhang

Elastic scattering for the 8B and 7Be + 208Pb systems at near-Coulomb barrier energies

NUCLEAR REACTIONS 208Pb(8B, 8B), E=50 MeV, [8B secondary beam from 3He(6Li, 8B), E=11.2 MeV/nucleon primary reaction at RIKEN]; 208Pb(7Be, 7Be), E=37.4, 40.5, 42.2 MeV, [7Be secondary beam from 1H(7Li, 7Be), E=48.8 MeV primary reaction at LNL-Legnaro]; measured charged particles, σ(θ, E) using the EXPADES detector array, and angular distribution; analyzed by optical model and the continuum discretized coupled channels (CDCC) formalisms. Experiments performed at the CNS Radioactive Ion Beams (CRIB) facility at RIKEN, and EXOTIC facility at the Laboratori Nazionali di Legnaro (LNL).

doi: 10.1103/PhysRevC.100.024602
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2018HI07      Phys.Rev. C 98, 014321 (2018), Erratum Phys.Rev. C 106, 069902 (2022)

Y.Hirayama, Y.X.Watanabe, M.Mukai, M.Ahmed, S.C.Jeong, Y.Kakiguchi, S.Kimura, M.Oyaizu, J.H.Park, P.Schury, M.Wada, H.Watanabe, H.Miyatake

β- and γ-decay spectroscopy of 197, 198Os

RADIOACTIVITY 196,197,198Os, 198Ir(β-)[from 198Pt(136Xe, X), E=10.75 MeV/nucleon using KEK Isotope Separation System (KISS) at RIKEN, an argon-gas-cell-based laser ion source combined with an on-line isotope separator]; measured β- radiation using multisegmented proportional gas counter (MSPGC), Eγ, Iγ, γγ- and βγ-coin with particle selection condition of Os and Ir, half-lives of decays of 196,197,198Os and 198Ir. 197,198Ir, 198Pt; deduced levels, Iβ feedings, logft, configurations of parent and daughter states. 197mTl(IT); measured Eγ, Iγ, T1/2; deduced conversion coefficients and compared with previous results. Comparison with previous experimental data. A=195-206, Z=76; comparison of measured β-decay half-lives with theoretical results from DF3, FRDM, and KUTY models.

doi: 10.1103/PhysRevC.98.014321
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2018IT04      Phys.Rev.Lett. 120, 152501 (2018)

Y.Ito, P.Schury, M.Wada, F.Arai, H.Haba, Y.Hirayama, S.Ishizawa, D.Kaji, S.Kimura, H.Koura, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morimoto, K.Morita, M.Mukai, I.Murray, T.Niwase, K.Okada, A.Ozawa, M.Rosenbusch, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik, S.Yamaki

First Direct Mass Measurements of Nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph

NUCLEAR REACTIONS 232Th(19F, 5n)246Es, E=99.6, 103 MeV;238U(18O, 5n)251Fm, E=93.9 MeV; 203Tl(48Ca, 2n)249Md, E=215 MeV; 205Tl(48Ca, 3n)250Md, E=223 MeV; 205Tl(48Ca, 2n)251Md, E=215 MeV; 238U(19F, 5n)252md, E=98.6 MeV; 208Pb(48Ca, 2n)254No, E=219 MeV; measured reaction products, TOF; deduced mass excesses. Comparison with available data.

ATOMIC MASSES 253,254Lr, 257,258Db, 261,262Bh, 266Mt; analyzed available data; deduced mass excesses.

doi: 10.1103/PhysRevLett.120.152501
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2018KI21      Int.J. Mass Spectrom. 430, 134 (2018)

S.Kimura, Y.Ito, D.Kaji, P.Schury, M.Wada, H.Haba, T.Hashimoto, Y.Hirayama, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morimoto, M.Mukai, I.Murray, A.Ozawa, M.Rosenbusch, H.Schatz, A.Takamine, T.Tanaka, Y.X.Watanabe, H.Wollnik

Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph

ATOMIC MASSES 63Cu, 64,65,66Zn, 65Ga, 65,66,67Ge, 67As, 78,81Br, 80Rb, 79Sr; measured frequencies, TOF; deduced masses, new mass excess values. Comparison with AME16 evaluations.

NUCLEAR REACTIONS S(36Ar, X)63Cu/64Zn/65Zn/66Zn/65Ga/65Ge/66Ge/67Ge/67As/78Br/81Br/80Rb/79Sr, E=3.30 MeV/nucleon; measured reaction products; deduced σ. Comparison with theoretical calculations of fusion-evaporation reactions.

doi: 10.1016/j.ijms.2018.05.001
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2018MU19      Nucl.Instrum.Methods Phys.Res. A884, 1 (2018)

M.Mukai, Y.Hirayama, Y.X.Watanabe, P.Schury, H.S.Jung, M.Ahmed, H.Haba, H.Ishiyama, S.C.Jeong, Y.Kakiguchi, S.Kimura, J.Y.Moon, M.Oyaizu, A.Ozawa, J.H.Park, H.Ueno, M.Wada, H.Miyatake

High-efficiency and low-background multi-segmented proportional gas counter for β-decay spectroscopy

RADIOACTIVITY 198Ir(β-), 199Pt(IT), (β-) [from 198Pt(136Xe, X), E=9.6 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ, β-γ-coin.; deduced T1/2 and uncertainties. Comparison with available data.

doi: 10.1016/j.nima.2017.12.013
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2018RO14      Phys.Rev. C 97, 064306 (2018)

M.Rosenbusch, Y.Ito, P.Schury, M.Wada, D.Kaji, K.Morimoto, H.Haba, S.Kimura, H.Koura, M.MacCormick, H.Miyatake, J.Y.Moon, K.Morita, I.Murray, T.Niwase, A.Ozawa, M.Reponen, A.Takamine, T.Tanaka, H.Wollnik

New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes

ATOMIC MASSES 210,211,212,214Ra, 210,211,212,213,214Ac; measured time of flight, and mass excess using multireflection time-of-flight mass spectrograph (MRTOF-MS) at superheavy element (SHE) mass facility of RIKEN-KEK, and using gas-filled recoil ion separator GARIS-II at RIKEN. Comparison with values from AME-2016. Ra and Ac isotopes produced in 169Tm(48Ca, X), E=5, 6 MeV/nucleon reaction at RIKEN. Z=82-92, N=121-129; systematics of S(2n) values.

doi: 10.1103/PhysRevC.97.064306
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2017DA11      Phys.Rev. C 95, 055805 (2017)

S.K.Das, T.Fukuda, Y.Mizoi, H.Ishiyama, H.Miyatake, Y.X.Watanabe, Y.Hirayama, S.C.Jeong, H.Ikezoe, M.Matsuda, K.Nishio, T.Hashimoto

New measurement of the 8Li(α, n)11B reaction in a lower-energy region below the Coulomb barrier

NUCLEAR REACTIONS 4He(8Li, n)11B, E=15.1 MeV, [secondary 8Li beam from 9Be(7Li, X), E=24.0 MeV primary reaction using recoil-mass separator at JAERI tandem accelerator facility]; measured 8Li ion energies using time-of-flight method, 11B particle spectra by an active-target-type gas counter MSTPC, and neutron spectra by segmented plastic-scintillator detector, σ as function of center of mass energy including Gamow window region, and predominant energy region for the big bang nucleosynthesis. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.95.055805
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2017HI05      Phys.Rev. C 96, 014307 (2017)

Y.Hirayama, M.Mukai, Y.X.Watanabe, M.Ahmed, S.C.Jeong, H.S.Jung, Y.Kakiguchi, S.Kanaya, S.Kimura, J.Y.Moon, T.Nakatsukasa, M.Oyaizu, J.H.Park, P.Schury, A.Taniguchi, M.Wada, K.Washiyama, H.Watanabe, H.Miyatake

In-gas-cell laser spectroscopy of the magnetic dipole moment of the N ≈ 126 isotope 199Pt

NUCLEAR MOMENTS 199Pt, 199mPt; measured magnetic dipole and electric quadrupole moments, isotope shifts, mean-square charge radii by hyperfine splitting of the 48.792-nm transition using the in-gas-cell laser ionization spectroscopy (IGLIS), and the half-lives of the ground state and the isomer; discussed configurations. 192,196,198Pt; measured mean-square charge radii relative to that of 194Pt by hyperfine structure. Pt isotopes produced in 198Pt(136Xe, X), E=10.75 MeV/nucleon reaction using the on-line KEK Isotope Separation System (KISS) at RIKEN. Comparison with previous experimental results, and with self-consistent Bogoliubov (HFB) model calculations. Systematics of magnetic dipole moments of 5/2- and 13/2+ states in 193,195,197,199Pt and 197,199Hg. Systematics of mean square charge radius and quadrupole deformation in A=178-199 Pt isotopes.

doi: 10.1103/PhysRevC.96.014307
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2017SC02      Phys.Rev. C 95, 011305 (2017)

P.Schury, M.Wada, Y.Ito, D.Kaji, F.Arai, M.MacCormick, I.Murray, H.Haba, S.Jeong, S.Kimura, H.Koura, H.Miyatake, K.Morimoto, K.Morita, A.Ozawa, M.Rosenbusch, M.Reponen, P.-A.Soderstrom, A.Takamine, T.Tanaka, H.Wollnik

First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reactions: Toward identification of superheavy elements via mass spectroscopy

ATOMIC MASSES 204,205,206Fr, 204,205,206Rn, 204,205,206At, 204,205Po, 205Bi; measured time-of-flight spectra, precise atomic masses with reference to that of 205Fr using GARIS-II recoil ion separator GARIS-II and multireflection time-of-flight mass spectrographs (MRTOF-MS) at RILAC-RIKEN facility. Isotopes produced in 165Ho, 169Tm(40Ar, X), E=4.825, 5.16 MeV/nucleon. Comparison with AME-2012 values, and previous experimental values.

doi: 10.1103/PhysRevC.95.011305
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2017ST07      Acta Phys.Pol. B48, 615 (2017)

E.Strano, D.Torresi, M.Mazzocco, N.Keeley, A.Boiano, C.Boiano, P.Di Meo, A.Guglielmetti, M.La Commara, P.Molini, C.Manea, C.Parascandolo, D.Pierroutsakou, C.Signorini, F.Soramel, D.Filipescu, A.Gheorghe, T.Glodariu, J.Grebosz, S.Jeong, Y.H.Kim, J.A.Lay, H.Miyatake, M.Nicoletto, A.Pakou, K.Rusek, O.Sgouros, V.Soukeras, L.Stroe, N.Toniolo, A.Vitturi, Y.Watanabe, K.Zerva

Discrimination of Processes and Optical Model Analysis in the 17O+52Ni Collision Around the Coulomb Barrier

NUCLEAR REACTIONS 58Ni(17O, 17O), E=40-50 MeV; measured reaction products; deduced σ(θ); calculated σ(θ) using self-normalization formula and using optical model; deduced imaginary radius parameter, optical model parameters. Compared with 58Ni(16O, 16O) and 58Ni(17F, 17F).

doi: 10.5506/APhysPolB.48.615
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2016HI09      Nuovo Cim. C 39, 359 (2016)

Y.Hirayama, Y.X.Watanabe, H.Miyatake, P.Schury, M.Wada, M.Oyaizu, Y.Kakiguchi, M.Mukai, S.Kimura, M.Ahmed, S.C.Jeong, J.Y.Moon, J.H.Park

Nuclear spectroscopy of r-process nuclei around N=126 using KISS

RADIOACTIVITY 199Pt, 196Ir(β-); measured decay products; deduced T1/2 and their uncertainties. Laser resonance ionization technique in the gas cell.

doi: 10.1393/ncc/i2016-16359-9
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2016KU11      Phys.Rev. C 93, 054313 (2016)

A.Kusoglu, G.Georgiev, C.Sotty, D.L.Balabanski, A.Goasduff, Y.Ishii, Y.Abe, K.Asahi, M.Bostan, R.Chevrier, M.Chikamori, J.M.Daugas, T.Furukawa, H.Nishibata, Y.Ichikawa, Y.Ishibashi, R.Lozeva, H.Miyatake, D.Nagae, T.Nanao, M.Niikura, T.Niwa, S.Okada, A.Ozawa, Y.Saito, H.Shirai, H.Ueno, D.T.Yordanov, N.Yoshida

Magnetic moment of the 13/2+ isomeric state in 69Cu: Spin alignment in the one-nucleon removal reaction

NUCLEAR MOMENTS 69Cu; measured Eγ, Iγ, γγ-, (particle)γ-coin, γ-ray yields, γ(θ), Larmor precession under external magnetic field, time-dependent perturbed angular distribution (TDPAD) method; deduced isomer half-life, magnetic moment, multipolarity, spin alignment in one-nucleon removal reaction at RIKEN facility. 69Cu beam from 9Be(70Zn, X), E=63.13 MeV/nucleon reaction using RIPS separator at RIKEN.

NUCLEAR REACTIONS 9Be(70Zn, X)69Cu, E=63.13 MeV/nucleon; measured Eγ, Iγ, γγ-coin, γ(θ), isomer half-life by γ(t) using RIPS separator at RIKEN. 69Cu; deduced levels, multipolarity, g factor of a level in 69Cu, configurations. Comparison with shell-model calculations using JUN45 and jj4b interactions.

doi: 10.1103/PhysRevC.93.054313
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2016ST18      Phys.Rev. C 94, 024622 (2016)

E.Strano, D.Torresi, M.Mazzocco, N.Keeley, A.Boiano, C.Boiano, P.Di Meo, A.Guglielmetti, M.la Commara, P.Molini, C.Manea, C.Parascandolo, D.Pierroutsakou, C.Signorini, F.Soramel, D.Filipescu, A.Gheorghe, T.Glodariu, J.Grebosz, S.Jeong, Y.H.Kim, J.A.Lay, H.Miyatake, M.Nicoletto, A.Pakou, K.Rusek, O.Sgouros, V.Soukeras, L.Stroe, N.Toniolo, A.Vitturi, Y.Watanabe, K.Zerva

17O + 58Ni scattering and reaction dynamics around the Coulomb barrier

NUCLEAR REACTIONS 58Ni(17O, 17O), (17O, X), E=40.0, 42.5, 45.0, 47.5, 50.0 MeV; measured reaction products, σ(θ) for elastic scattering, angular distributions for 1n-stripping process leading to states in 59Ni, angular distributions for target excitation to its first excited 2+ state, total σ(E). Optical model analysis using Woods-Saxon (WS) potentials and code FRESCO for elastic scattering data.

doi: 10.1103/PhysRevC.94.024622
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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
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2015WA30      Phys.Rev.Lett. 115, 172503 (2015)

Y.X.Watanabe, Y.H.Kim, S.C.Jeong, Y.Hirayama, N.Imai, H.Ishiyama, H.S.Jung, H.Miyatake, S.Choi, J.S.Song, E.Clement, G.de France, A.Navin, M.Rejmund, C.Schmitt, G.Pollarolo, L.Corradi, E.Fioretto, D.Montanari, M.Niikura, D.Suzuki, H.Nishibata, J.Takatsu

Pathway for the Production of Neutron-Rich Isotopes around the N=126 Shell Closure

NUCLEAR REACTIONS 198Pt(136Xe, X)138Ba/140Ba/194Os/196Os, E=7.98 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ.

doi: 10.1103/PhysRevLett.115.172503
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2014AS03      Physics of Part.and Nuclei 45, 199 (2014)

K.Asahi, Y.Ichikawa, M.Chikamori, Y.Ohtomo, E.Hikota, T.Suzuki, T.Inoue, T.Furukawa, A.Yoshimi, K.Suzuki, T.Nanao, H.Miyatake, M.Tsuchiya, N.Yoshida, H.Shirai, T.Ino, H.Ueno, Y.Matsuo, T.Fukuyama

Search for electric dipole moment in 129Xe atom using a nuclear spin oscillator

ATOMIC PHYSICS 129Xe; analyzed experimental sensitivity for electric dipole moment measurements.

doi: 10.1134/S1063779614010080
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2014SH01      Hyperfine Interactions 225, 183 (2014)

T.Shimoda, K.Tajiri, K.Kura, A.Odahara, M.Suga, Y.Hirayama, N.Imai, H.Miyatake, M.Pearson, C.D.P.Levy, K.P.Jackson, R.Legillon, C.Petrache, T.Fukuchi, N.Hamatani, T.Hori, M.Kazato, Y.Kenmoku, T.Masue, H.Nishibata, T.Suzuki, A.Takashima, R.Yokoyama

Nuclear structure explored by β-delayed decay spectroscopy of spin-polarized radioactive nuclei at TRIUMF ISAC-1

RADIOACTIVITY 29,30Na(β-); measured decay products, Eγ, Iγ; deduced energy levels, J, π. Comparison with available data.

doi: 10.1007/s10751-013-0895-5
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2013IN03      Hyperfine Interactions 220, 59 (2013)

T.Inoue, T.Furukawa, A.Yoshimi, Y.Ichikawa, M.Chikamori, Y.Ohtomo, M.Tsuchiya, N.Yoshida, H.Shirai, M.Uchida, K.Suzuki, T.Nanao, H.Miyatake, H.Ueno, Y.Matsuo, T.Fukuyama, K.Asahi

Nuclear spin maser and experimental search for 129Xe atomic EDM

NUCLEAR MOMENTS 129Xe; measured time-variations of the maser frequency and the cell temperature; deduced sources of systematic errors in electric dipole moment measurements.

doi: 10.1007/s10751-012-0751-z
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2013SO02      Nucl.Instrum.Methods Phys.Res. B295, 1 (2013)

T.Sonoda, M.Wada, H.Tomita, C.Sakamoto, T.Takatsuka, T.Furukawa, H.Iimura, Y.Ito, T.Kubo, Y.Matsuo, H.Mita, S.Naimi, S.Nakamura, T.Noto, P.Schury, T.Shinozuka, T.Wakui, H.Miyatake, S.Jeong, H.Ishiyama, Y.X.Watanabe, Y.Hirayama, K.Okada, A.Takamine

Development of a resonant laser ionization gas cell for high-energy, short-lived nuclei

ATOMIC PHYSICS Fe, Co, Nb, Cu; measured laser wavelength for resonance ionization, transport efficiency. Comparison with calculations.

doi: 10.1016/j.nimb.2012.10.009
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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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2013WA29      Nucl.Instrum.Methods Phys.Res. B317, 752 (2013)

Y.X.Watanabe, Y.Hirayama, N.Imai, H.Ishiyama, S.C.Jeong, H.Miyatake, E.Clement, G.de France, A.Navin, M.Rejmund, C.Schmitt, G.Pollarolo, L.Corradi, E.Fioretto, D.Montanari, S.H.Choi, Y.H.Kim, J.S.Song, M.Niikura, D.Suzuki, H.Nishibata, J.Takatsu

Study of collisions of 136Xe + 198Pt for the KEK isotope separator

NUCLEAR REACTIONS 198Pt(136Xe, X), E=8 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced isotopic distribution of projectile like fragments around the neutron magic number N=126.

doi: 10.1016/j.nimb.2013.04.036
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2012HI03      Eur.Phys.J. A 48, 54 (2012)

Y.Hirayama, M.Mihara, Y.X.Watanabe, S.C.Jeong, H.Miyatake, S.Momota, T.Hashimoto, N.Imai, K.Matsuta, H.Ishiyama, S.Ichikawa, T.Ishii, T.Izumikawa, I.Katayama, H.Kawakami, H.Kawamura, I.Nishinaka, K.Nishio, H.Makii, S.Mitsuoka, A.Osa, Y.Otokawa, T.K.Sato

Tilted-foil technique for producing a spin-polarized radioactive isotope beam

doi: 10.1140/epja/i2012-12054-1
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2012IM01      Phys.Rev. C 85, 034313 (2012)

N.Imai, Y.Hirayama, Y.X.Watanabe, T.Teranishi, T.Hashimoto, S.Hayakawa, Y.Ichikawa, H.Ishiyama, S.C.Jeong, D.Kahl, S.Kubono, H.Miyatake, H.Ueno, H.Yamaguchi, K.Yoneda, A.Yoshimi

Isobaric analog resonances of the N=21 nucleus 35Si

NUCLEAR REACTIONS 1H(34Si, p), [secondary 34Si from fragmentation of 63 MeV/nucleon 40Ar beam], E=5 MeV/nucleon; measured particle spectra, energy loss, cross sections of the proton elastic scattering at E(p)(cm)=2.5-5.5 MeV. 35P; deduced resonances, proton widths, total widths, spectroscopic factors; IAR of 35Si states. R-matrix analysis. 35Si; deduced levels, J, π from IAR assignment. Thick target inverse kinematics (TTIK) experiments at RIKEN facility. Comparison of 35Si levels with those in N=21 nuclei of 33Mg, 37S, 39Ar, 41Ca. Comparison with previous studies.

doi: 10.1103/PhysRevC.85.034313
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2012KU11      Phys.Rev. C 85, 034310 (2012)

K.Kura, K.Tajiri, T.Shimoda, A.Odahara, T.Hori, M.Kazato, T.Masue, M.Suga, A.Takashima, T.Suzuki, T.Fukuchi, Y.Hirayama, N.Imai, H.Miyatake, M.Pearson, C.D.P.Levy, K.P.Jackson

Structure of 28Mg studied by β-decay spectroscopy of spin-polarized 28Na: The first step of systematic studies on neutron-rich Mg isotopes

RADIOACTIVITY 28Na[from Ta(p, X), E=500 MeV](β-); measured Eγ, Iγ, Iβ, βγ-, γγ-coin, β asymmetry at ISAC, TRIUMF facility, spin polarized 28Na. 28Mg; deduced levels, J, π, transition probabilities, β feedings, logft. Comparison with previous studies, and shell model predictions with USD, USDA, USDB Hamiltonian calculations. Discussed shell evolution in the region of the N=20 island of inversion.

doi: 10.1103/PhysRevC.85.034310
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2012SH29      Prog.Theor.Phys.(Kyoto), Suppl. 196, 310 (2012)

T.Shimoda, K.Tajiri, A.Odahara, M.Suga, N.Hamatani, H.Nishibata, J.Takatsu, R.Yokoyama, Y.Hirayama, N.Imai, H.Miyatake, M.Pearson, C.D.P.Levy, K.P.Jackson, R.Leguillon, C.Petrache

Structure of Mg Isotope Studied by β-Decay Spectroscopy of Spin-Polarized Na Isotopes - Shape Coexistence in 30Mg -

RADIOACTIVITY 30Na(β-); measured decay products, Eγ, Iγ; deduced level scheme, energies, J, π. Comparison with available data.

doi: 10.1143/PTPS.196.310
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2011HI15      Eur.Phys.J. A 47, 138 (2011)

Y.Hirayama, M.Mihara, Y.X.Watanabe, S.C.Jeong, N.Imai, K.Matsuta, H.Miyatake, T.Hashimoto, H.Ishiyama, S.Ichikawa, T.Ishii, T.Izumikawa, I.Katayama, H.Kawakami, I.Nishinaka, K.Nishio, H.Makii, S.Mitsuoka, S.Momota, A.Osa, Y.Otokawa, T.K.Sato, Y.Wakabayashi

Spin-polarization of radioactive 123Ing.s. by the tilted-foil method

RADIOACTIVITY 123In(β-)[from U(p, F), E=34 MeV]; measured Iβ(θ, t), β polarization using tilted multifoils at ISOL-based facility TRIAC and β-NMR technique; deduced asymmetry.

doi: 10.1140/epja/i2011-11138-8
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2010ID02      Phys.Lett. B 686, 18 (2010)

E.Ideguchi, S.Ota, T.Morikawa, M.Oshima, M.Koizumi, Y.Toh, A.Kimura, H.Harada, K.Furutaka, S.Nakamura, F.Kitatani, Y.Hatsukawa, T.Shizuma, M.Sugawara, H.Miyatake, Y.X.Watanabe, Y.Hirayama, M.Oi

Superdeformation in asymmetric N > Z nucleus 40Ar

NUCLEAR REACTIONS 26Mg(18O, 2n2p), E=69 MeV; measured Eγ, Iγ, γγ-coin, (particle)γ-coin using Gemini-II and Si-Ball detector arrays. 40Ar; deduced levels, J, π, deformation, related features and lifetimes using DSA; calculated configuration using HFB method. Comparison with 36Ar and 40Ca systematics.

doi: 10.1016/j.physletb.2010.02.031
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2010IM01      Eur.Phys.J. A 46, 157 (2010)

N.Imai, Y.Hirayama, H.Ishiyama, S.C.Jeong, H.Miyatake, Y.X.Watanabe, H.Makii, S.Mitsuoka, D.Nagae, I.Nishinaka, K.Nishio, K.Yamaguchi

Proton resonance elastic scattering in inverse kinematics on the medium heavy nucleus 68Zn

NUCLEAR REACTIONS 1H(68Zn, p), E=5.5 MeV/nucleon; measured reaction products, proton spectrum. 69Zn; deduced proton yields, σ(θ), isobaric analogue resonance angular momentum, proton and total widths. Comparison with R-matrix calculations.

doi: 10.1140/epja/i2010-11054-5
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2009HA11      Phys.Lett. B 674, 276 (2009)

T.Hashimoto, H.Ishiyama, Y.X.Watanabe, Y.Hirayama, N.Imai, H.Miyatake, S.C.Jeong, M.-H.Tanaka, N.Yoshikawa, T.Nomura, S.Mitsuoka, K.Nishio, T.K.Sato, A.Osa, S.Ichikawa, M.Matsuda, H.Ikezoe, S.K.Das, Y.Mizoi, T.Fukuda, A.Sato, T.Shimoda, K.Otsuki, T.Kajino

A new measurement of the astrophysical 8Li(d, t)7Li reaction

NUCLEAR REACTIONS 2H(8Li, t), E=0.18, 0.24, 0.30, 0.40, 0.46, 0.60, 0.75 MeV/nucleon; measured charged-particle spectra, σ, σ(θ), σ(E); deduced 7Li excitation energy spectra, astrophysical reaction rate. Comparison with other data.

doi: 10.1016/j.physletb.2009.03.031
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2008IT04      Phys.Rev. C 77, 067301 (2008)

N.Itagaki, M.Ito, M.Milin, T.Hashimoto, H.Ishiyama, H.Miyatake

Coexistence of α + α + n + n and α + t + t cluster structures in 10Be

NUCLEAR STRUCTURE 10Be; calculated levels, J, π.

doi: 10.1103/PhysRevC.77.067301
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2007MA90      Eur.Phys.J. Special Topics 150, 37 (2007)

M.Mazzocco, C.Signorini, M.Romoli, R.Bonetti, A.De Francesco, A.De Rosa, M.Di Pietro, L.Fortunato, T.Glodariu, A.Guglielmetti, G.Inglima, T.Ishikawa, H.Ishiyama, R.Kanungo, N.Khai, S.Jeong, M.La Commara, B.Martin, H.Miyatake, T.Motobayashi, T.Nomura, D.Pierroutsakou, M.Sandoli, F.Soramel, L.Stroe, I.Sugai, M.H.Tanaka, E.Vardaci, Y.Watanabe, A.Yoshida, K.Yoshida

Elastic scattering for the system 11Be + 209Bi at Coulomb barrier energies

NUCLEAR REACTIONS 209Bi(11Be, 11Be), E=38-50 MeV; measured elastic scattering σ(θ). Compared results to model calculations. Deduced reaction and fusion cross sections.

doi: 10.1140/epjst/e2007-00260-2
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2145.


2006IS02      Nucl.Instrum.Methods Phys.Res. A560, 366 (2006)

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

Production of a low-energy radioactive nuclear beam with high purity using JAERI-RMS

NUCLEAR REACTIONS 9Be(7Li, 8Li), E=24 MeV; 2H(11B, 12B), E=40 MeV; 2H(18O, 16N), E=73 MeV; measured particle spectra, yields. Radioactive beam production.

doi: 10.1016/j.nima.2005.12.244
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1933.


2006MA51      Eur.Phys.J. A 28, 295 (2006)

M.Mazzocco, C.Signorini, M.Romoli, A.De Francesco, M.Di Pietro, E.Vardaci, K.Yoshida, A.Yoshida, R.Bonetti, A.De Rosa, T.Glodariu, A.Guglielmetti, G.Inglima, M.La Commara, B.Martin, D.Pierroutsakou, M.Sandoli, F.Soramel, L.Stroe, R.Kanungo, N.Khai, T.Motobayashi, T.Nomura, T.Ishikawa, H.Ishiyama, S.Jeong, H.Miyatake, M.H.Tanaka, I.Sugai, Y.Watanabe

Scattering of 11Be halo nucleus from 209Bi at the Coulomb barrier

NUCLEAR REACTIONS 209Bi(11Be, 11Be), E=40 MeV; measured quasielastic σ, σ(θ). Discussed halo structure reaction mechanism features. Comparison with optical model, similar systems. EXODET array.

doi: 10.1140/epja/i2006-10058-0
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1992.


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.


2005KU27      Nucl.Phys. A758, 733c (2005)

S.Kubono, T.Teranishi, M.Notani, H.Yamaguchi, A.Saito, J.J.He, M.Wakabayashi, H.Fujikawa, G.Amadio, H.Baba, T.Fukuchi, S.Shimoura, S.Michimasa, S.Nishimura, M.Nishimura, Y.Gono, A.Odahara, S.Kato, J.Y.Moon, J.H.Lee, C.S.Lee, J.C.Kim, K.I.Hahn, T.Ishikawa, T.Hashimoto, H.Ishiyama, Y.X.Watanabe, M.H.Tanaka, H.Miyatake, Zs.Fulop, V.Guimaraes, R.Lichtenthaler

Study of Stellar Reactions in Explosive Hydrogen Burning with CRIB

NUCLEAR REACTIONS 4He(14O, p), E(cm) ≈ 1-3.6 MeV; measured proton spectrum. 1H(23Mg, p), E(cm) ≈ 0.6-3.5 MeV; measured elastic σ(θ). 24Al deduced excited states energies.

doi: 10.1016/j.nuclphysa.2005.05.132
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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
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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
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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
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2004JE13      Nucl.Phys. A746, 293c (2004)

S.C.Jeong, I.Katayama, H.Kawakami, H.Ishiyama, Y.Watanabe, H.Miyatake, E.Tojyo, M.Oyaizu, K.Enomoto, M.Sataka, S.Okayasu, H.Sugai, S.Ichikawa, K.Nishio, Y.Sugiyama, A.Iwase, M.Yahagi, T.Hashimoto, K.Takada, M.Watanabe, M.Tanigaki, T.Shinozuka

8Li and 18F diffusion experiments in solids - an application of accelerated RNB -

doi: 10.1016/j.nuclphysa.2004.09.026
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1933.


2003GU06      Phys.Rev. C 67, 064601 (2003)

V.Guimaraes, S.Kubono, F.C.Barker, M.Hosaka, S.C.Jeong, I.Katayama, T.Miyachi, T.Nomura, M.H.Tanaka, Y.Fuchi, H.Kawashima, S.Kato, C.C.Yun, K.Ito, H.Orihara, T.Terakawa, T.Kishida, Y.Pu, S.Hamada, M.Hirai, H.Miyatake

Structure of the unbound 11N nucleus by the (3He, 6He) reaction

NUCLEAR REACTIONS 14N(3He, 6He), E=73.4 MeV; measured σ(E, θ). 11N deduced levels, J, π, resonance widths. DWBA analysis.

doi: 10.1103/PhysRevC.67.064601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1822.


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
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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
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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
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2002AO03      Phys.Rev. C66, 014301 (2002)

N.Aoi, K.Yoneda, E.Ideguchi, T.Kishida, T.Nakamura, M.Notani, H.Sakurai, T.Teranishi, Y.Watanabe, H.Wu, A.Yoshida, H.Miyatake, Y.Yamamoto, H.Ogawa, S.S.Yamamoto, M.Ishihara

Anomaly of N = 8 Shell Closure in Neutron-Rich Be and B Isotopes Studied via Delayed Neutron Emitting 14Be β Decay

RADIOACTIVITY 14Be(β-), (β-n) [from Be(18O, X)]; measured Eβ, β-delayed En, Eγ, nγ-coin, T1/2; deduced branching ratios, log ft. 14B deduced level J, π, width. 12,13,14B, 13C deduced feeding intensities.

doi: 10.1103/PhysRevC.66.014301
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2002IS05      Nucl.Phys. A701, 58c (2002)

H.Ishiyama, H.Miyatake, N.Yoshikawa, S.C.Jeong, M.Wada, Y.Ishida, M.H.Tanaka, S.Takaku, Y.Fuchi, H.Kawashima, I.Katayama, T.Nomura, T.Teranishi, M.Michimasa, N.Imai, Y.Yanagisawa, S.Kubono, P.Strasser, S.Kato

A Recoil Mass Separator for Nuclear Astrophysics Experiments

doi: 10.1016/S0375-9474(01)01548-2
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2002JE08      Nucl.Phys. A701, 461c (2002)

S.C.Jeong, H.Ishiyama, H.Kawakami, H.Miyatake, Y.Ishida, E.Tojyo, M.Oyaizu, S.Mizutani, N.Yoshikawa, M.H.Tanaka, H.Kawashima, Y.Fuchi, M.Wada, I.Katayama, T.Nomura

Target-Ion-Source System for RNB Facility at KEK Tanashi

doi: 10.1016/S0375-9474(01)01627-X
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2002MI25      Nucl.Phys. A701, 62c (2002)

H.Miyatake, S.C.Jeong, H.Ishiyama, Y.Ishida, H.Kawakami, N.Yoshikawa, I.Katayama, M.H.Tanaka, E.Tojyo, M.Oyaizu, S.Arai, S.Tomizawa, K.Niki, Y.Arakaki, M.Okada, Y.Takeda, M.Wada, P.Strasser, S.Kubono, T.Nomura

Present Status of the Radioactive Nuclear Beam Facility at KEK-Tanashi and the E-Arena in the KEK-JAERI Joint Project

doi: 10.1016/S0375-9474(01)01549-4
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2000MI34      Phys.Rev. C62, 065801 (2000); Addendum Phys.Rev. C 91, 047602 (2015)

Y.Mizoi, T.Fukuda, Y.Matsuyama, T.Miyachi, H.Miyatake, N.Aoi, N.Fukuda, M.Notani, Y.X.Watanabe, K.Yoneda, M.Ishihara, H.Sakurai, Y.Watanabe, A.Yoshida

Measurement of the 8Li(α, n)11B Reaction and Astrophysical Implications

NUCLEAR REACTIONS 4He(8Li, n), (9Be, n), E(cm)=1.5-7.0 MeV; measured neutron spectra, total σ, σ(E). 8Li(α, n), E(cm)=1.5-7.0 MeV; deduced σ, reaction rates, astrophysical S-factors. Secondary beams from 12C fragmentation. Comparisons with previous results, model predictions.

doi: 10.1103/PhysRevC.62.065801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1737.


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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1997AO01      Nucl.Phys. A616, 181c (1997)

N.Aoi, K.Yoneda, H.Miyatake, H.Ogawa, Y.Yamamoto, E.Ideguchi, T.Kishida, T.Nakamura, M.Notani, H.Sakurai, T.Teranishi, H.Wu, S.S.Yamamoto, Y.Watanabe, A.Yoshida, M.Ishihara

β-Spectroscopy of 11Li and 14Be -With a β-n-γ Triple Coincidence Method

RADIOACTIVITY 11Li(β-); 14Be(β-); measured βnγ-coin; deduced log ft. 11Be, 14B deduced levels, Gamow-Teller branchings.

doi: 10.1016/S0375-9474(97)00087-0
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1997AO04      Z.Phys. A358, 253 (1997)

N.Aoi, K.Yoneda, H.Miyatake, H.Ogawa, Y.Yamamoto, E.Ideguchi, T.Kishida, T.Nakamura, M.Notani, H.Sakurai, T.Teranishi, H.Wu, S.S.Yamamoto, Y.Watanabe, A.Yoshida, M.Ishihara

β-Delayed Neutron Decay of Drip Line Nuclei 11Li and 14Be

RADIOACTIVITY 11Li, 14Be(β-); measured beta-delayed neutron-, γ-spectra, γγγ-coin; deduced log ft, halo neutron related features. 10,11Be, 14B deduced levels. Tof.

doi: 10.1007/s002180050322
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1997BE66      Phys.Rev. C56, 3038 (1997)

M.Belbot, J.J.Kolata, M.Zahar, N.Aoi, M.Hirai, M.Ishihara, H.Okuno, H.Sakurai, T.Teranishi, T.Kishida, G.Liu, T.Nakamura, Y.Watanabe, A.Yoshida, E.Ideguchi, H.Miyatake, S.Shimoura, S.S.Yamamoto

β Decay of the Neutron-Rich Isotope 14Be

RADIOACTIVITY 14Be(β-n) [from 9Be(18O, X), E=100 MeV/nucleon]; measured β-delayed neutron spectra, β(neutron)-coin, T1/2. 14B deduced level, possible J, π.

doi: 10.1103/PhysRevC.56.3038
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1997KU19      Nucl.Phys. A621, 195c (1997)

S.Kubono, M.Hosaka, P.Strasser, V.Guimaraes, S.C.Jeong, I.Katayama, T.Miyachi, T.Nomura, M.H.Tanaka, Y.Fuchi, H.Kawashima, S.Kato, C.C.Yun, H.Orihara, T.Niizeki, H.Miyatake, T.Shimoda, T.Kajino, S.Wanajo

Study of the Early Stage of the Rapid-Proton Process

doi: 10.1016/S0375-9474(97)00237-6
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1996MI25      Nucl.Instrum.Methods Phys.Res. A372, 489 (1996)

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

Performance of Fragment Separator with Homogeneously Thick Energy Degrader: A highly flexible system for use with degraders in a wide thickness range

NUCLEAR REACTIONS 9Be(14N, X), E=70 MeV/nucleon; 197Au(14N, X), E=40 MeV/nucleon; measured fragment spectra, Li, B, Be isotopes; deduced projectile fragment separator characteristics.

doi: 10.1016/0168-9002(95)01299-0
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1996TA12      Hyperfine Interactions 97/98, 469 (1996)

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

Freezing-Out of Nuclear Polarization in Radioactive Core Ions of Microclusters, ' Snowballs ' in Superfluid Helium

NUCLEAR MOMENTS 12B(β-); measured β asymmetry; deduced source polarization related features. Spin polarized 12B introduced into superfluid helium.

doi: 10.1007/BF02150190
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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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1995GU08      Nucl.Phys. A588, 161c (1995)

V.Guimaraes, S.Kubono, M.Hosaka, N.Ikeda, S.C.Jeong, I.Katayama, T.Miyachi, T.Nomura, M.H.Tanaka, Y.Fuchi, H.Kawashima, S.Ohkawa, S.Kato, H.Toyokawa, C.C.Yun, T.Niizeki, K.Ito, T.Kishida, T.Kubo, Y.Pu, M.Ohura, H.Orihara, T.Terakawa, S.Hamada, M.Hirai, H.Miyatake

Structure of Light Proton-Rich Nuclei on the Drip-Line

NUCLEAR REACTIONS 14N, 20Ne(3He, 6He), E=70.08 MeV; measured 6He energy spectra; deduced isobaric multiplet mass equation. 11N, 17Ne deduced levels, J, π, configuration.

doi: 10.1016/0375-9474(95)00117-J
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1995MO14      Z.Phys. A352, 7 (1995)

K.Morita, Y.H.Pu, J.Feng, M.G.Hies, K.O.Lee, A.Yoshida, S.C.Jeong, S.Kubono, T.Nomura, Y.Tagaya, M.Wada, M.Kurokawa, T.Motobayashi, H.Ogawa, T.Uchibori, K.Sueki, T.Ishizuka, K.Uchiyama, Y.Fujita, H.Miyatake, T.Shimoda, T.Shinozuka, H.Kudo, Y.Nagai, S.A.Shin

New α-Decaying Neutron Deficient Isotopes 197Rn and 200Fr

NUCLEAR REACTIONS 166Er(36Ar, 5n), E=186, 200 MeV; 169Tm(36Ar, 5n), E=186 MeV; measured Eα, Iα; deduced evidence for 197,197mRn, 200Fr. Evaporation residues obtained from gas-filled recoil separator, implanted onto position sensitive solid state detector.

RADIOACTIVITY 197,197mRn(α) [from 166Er(36Ar, 5n), E=186, 200 MeV]; 200Fr(α) [from 169Tm(36Ar, 5n), E=186 MeV]; 193,193mPo(α) [from 197,197mRn(α-decay)]; 196Rn(α) [from 166Er(36Ar, 6n)]; 192Po(α) [from 196Rn(α-decay)]; 200Fr(α) [from 169Tm(36Ar, 5n), E=186 MeV]; 196At(α) [from 200Fr(α-decay)]; measured Eα, Iα, T1/2, αα-energy correlations. Evaporation residues obtained from gas-filled recoil separator, implanted onto position sensitive solid state detector.


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


1994KU06      Z.Phys. A348, 59 (1994)

S.Kubono, C.C.Yun, R.N.Boyd, L.R.Buchmann, Y.Fuchi, M.Hosaka, N.Ikeda, C.L.Jiang, I.Katayama, H.Kawashima, H.Miyatake, T.Niizeki, T.Nomura, A.Odahara, M.Ohura, H.Ohnuma, H.Orihara, C.Rolfs, T.Shimoda, Y.Tajima, M.H.Tanaka, H.Toyokawa

High Resolution Study of 24Mg(p, d)23Mg for the Ne-E Problem

NUCLEAR REACTIONS 24Mg(p, d), E=34-945 MeV; measured deuteron spectra, σ(θ); deduced 22Na(p, γ) reaction rate, astrophysics related Ne-E problem implications. 23Mg deduced level, possible J, π.

doi: 10.1007/BF01291654
Citations: PlumX Metrics


1994OK03      Phys.Lett. 335B, 29 (1994)

H.Okuno, K.Asahi, H.Sato, H.Ueno, J.Kura, M.Adachi, T.Nakamura, T.Kubo, N.Inabe, A.Yoshida, T.Ichihara, Y.Kobayashi, Y.Ohkubo, M.Iwamoto, F.Ambe, T.Shimoda, H.Miyatake, N.Takahashi, J.Nakamura, D.Beaumel, D.J.Morrissey, W.-D.Schmidt-Ott, M.Ishihara

Systematic Behavior of Ejectile Spin Polarization in the Projectile Fragmentation Reaction

NUCLEAR REACTIONS 197Au, 93Nb, 27Al(15N, X), E=70-112 MeV/nucleon; 197Au(14N, X), E=39.4 MeV/nucleon; measured ejectile(12,13B) spin polarization; deduced role of new reaction mechanism.

doi: 10.1016/0370-2693(94)91553-9
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1994UE04      Hyperfine Interactions 84, 371 (1994)

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

Spin-Polarized Radioactive Beams and β-NMR Experiments

RADIOACTIVITY 14,15B, 21F(β-) [from 197Au(14N, X), E=40.6 MeV/nucleon; 197Au(15N, X), E=69.5, 111 MeV/nucleon; 27Al, 93Nb(15N, X), E=69.5 MeV/nucleon]; measured β NMR, polarized sources; deduced μ. Model comparison.

doi: 10.1007/BF02060685
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1993OK02      Hyperfine Interactions 78, 97 (1993)

H.Okuno, K.Asahi, H.Ueno, H.Sato, M.Adachi, T.Kubo, T.Nakamura, N.Inabe, A.Yoshida, Y.Ohkubo, T.Ichihara, M.Ishihara, T.Shimoda, H.Miyatake, N.Takahashi

Polarization in Projectile Fragmentation and g-Factor Measurements for Neutron-Rich Nuclei

NUCLEAR REACTIONS 159Tb, 27Al, 93Nb, 197Au(15N, 12B), (15N, 13B), 93Nb(18O, 12B), (18O, 14B), E=70 MeV/nucleon; 197Au(14N, 12B), E=40 MeV/nucleon; 197Au(15N, 12B), (15N, 13B), E=112 MeV/nucleon; measured projectile fragment polarization.

RADIOACTIVITY 14,15B(β-n) [from 93Nb(18O, X), E=70 MeV/nucleon]; 21F(β-n) [from 93Nb(22Ne, X), E=70 MeV/nucleon]; measured NMR spectra; deduced g factor.

doi: 10.1007/BF00568122
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1992AS01      Hyperfine Interactions 75, 101 (1992)

K.Asahi, H.Okuno, H.Ueno, H.Sato, J.Kura, T.Kubo, T.Nakamura, N.Inabe, A.Yoshida, Y.Ohkubo, M.Adachi, T.Ichihara, M.Ishihara, T.Shimoda, H.Miyatake, N.Takahashi, D.Beaumel, D.J.Morrissey, W.-D.Schmidt-Ott

Spin-Oriented Projectile Fragments: The first application to g-factor measurements

NUCLEAR REACTIONS 197Au(14N, 12B), E=40.6 MeV/nucleon; 27Al(15N, 13B), E=69.5 MeV/nucleon; measured fragment spin polarization, yield.

RADIOACTIVITY 14,15B(β-) [from 93Nb(18O, X), E=70 MeV/nucleon]; measured g-factor, preliminary results.

doi: 10.1007/BF02398968
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1992FU01      Phys.Rev. C45, 993 (1992)

Y.Fujita, T.Shimoda, H.Miyatake, N.Takahashi, M.Fujiwara, S.Morinobu, T.Yamagata, J.Takamatsu, A.Terakawa, H.Folger

Observation of the Low-Energy Octupole Resonance in 208Pb by Inelastic α Scattering

NUCLEAR REACTIONS 208Pb(α, α'), E=70 MeV; measured σ(θ). 208Pb levels deduced L-assignment, EWSR fractions, isoscalar nature of low energy octupole resonance. Enriched target, DWBA analysis, comparison with (p, p') data.

doi: 10.1103/PhysRevC.45.993
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1376.


1992HA28      Nucl.Phys. A549, 327 (1992)

S.Hatori, H.Miyatake, S.Morinobu, K.Katori, M.Fujiwara, I.Katayama, N.Ikeda, T.Fukuda, T.Shinozuka, K.Ogawa

Gamow-Teller Strength in β-Decay of 25Si

RADIOACTIVITY 25Si(β+p) [from 24Mg(3He, 2n) reaction]; measured T1/2, β-delayed Ep, Ip, βp-coin. 25Si deduced proton branching ratio, β strength function. 25Al deduced level. Natural Mg target, surface barrier Si detector, ΔE-ΔE-E plastic scintillation β- telescope, recoil mass separation. Model comparison.

doi: 10.1016/0375-9474(92)90083-V
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1992KU02      Nucl.Phys. A537, 153 (1992)

S.Kubono, Y.Funatsu, N.Ikeda, M.Yasue, T.Nomura, Y.Fuchi, H.Kawashima, S.Kato, H.Miyatake, H.Orihara, T.Kajino

Level Structure of 21Mg and the 20Na(p, γ)21Mg Stellar Reaction Rate

NUCLEAR REACTIONS 24Mg(3He, 6He), E=73.71 MeV; measured σ(θ), θ(lab)=6°-28°; deduced stellar reaction rate of 20Na(p, γ)21Mg. 21Mg deduced levels, J, π.

doi: 10.1016/0375-9474(92)90162-D
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1638.


1992MO32      Nucl.Instrum.Methods Phys.Res. B70, 331 (1992)

S.Morinobu, I.Katayama, M.Fujiwara, S.Hatori, N.Ikeda, H.Miyatake, H.Nakabushi, K.Katori

Performance of and Experiments with the Recoil Separator CARP at RCNP

RADIOACTIVITY 25Si(β+p); measured β-delayed Ep, Ip. Recoil mass separator.

NUCLEAR REACTIONS 144Sm(20Ne, X), E=150 MeV; 90Zr(14N, X), E=90 MeV; measured evaporation residue spectra. Recoil mass separator.

doi: 10.1016/0168-583X(92)95949-R
Citations: PlumX Metrics


1991KU04      Phys.Rev. C43, 1821 (1991)

S.Kubono, N.Ikeda, T.Nomura, Y.Fuchi, H.Kawashima, S.Kato, H.Miyatake, H.Orihara

Spectroscopic Tool for Proton-Rich Nuclei: The (3He, 6He) reaction

NUCLEAR REACTIONS 24Mg(3He, 6He), E=73.71 MeV; measured σ(θ); deduced model parameters, L-dependence.

doi: 10.1103/PhysRevC.43.1821
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1884.


1991KU31      Z.Phys. A341, 121 (1991)

S.Kubono, N.Ikeda, M.H.Tanaka, T.Nomura, I.Katayama, Y.Fuchi, H.Kawashima, M.Ohura, H.Orihara, C.C.Yun, Y.Tajima, M.Yosoi, H.Ohnuma, H.Toyokawa, H.Miyatake, T.Shimoda, R.N.Boyd, T.Kubo, I.Tanihata, T.Kajino

Decay Properties of the Key Resonant States in 8Li(α, n)11B for Primordial Nucleosynthesis

NUCLEAR REACTIONS 9Be(α, p), E=50.29 MeV; measured pn-coin, (particle)(particle)-correlation; deduced implications to astrophysical reaction 8Li(α, n). 12B level deduced decay L, branching ratios, Γn/Γ, Γα/Γ.

doi: 10.1007/BF01281284
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1990AS07      Phys.Lett. 251B, 488 (1990)

K.Asahi, M.Ishihara, N.Inabe, T.Ichihara, T.Kubo, M.Adachi, H.Takanashi, M.Kouguchi, M.Fukuda, D.Mikolas, D.J.Morrissey, D.Beaumel, T.Shimoda, H.Miyatake, N.Takahashi

New Aspect of Intermediate Energy Heavy Ion Reactions. Large Spin Polarization of Fragments

NUCLEAR REACTIONS 197Au(14N, 12BX), E=40.6 MeV/nucleon; measured ejectile 12B spin polarization, yield. Projectile fragmentation.

doi: 10.1016/0370-2693(90)90784-4
Citations: PlumX Metrics


1989HI05      Phys.Rev. C39, 1286 (1989)

A.Higashi, K.Katori, M.Fujiwara, H.Ikegami, I.Katayama, S.Morinobu, M.Tosaki, S.I.Hayakawa, N.Ikeda, H.Miyatake

Systematic Behavior of Octupole Strengths in 46,48,50Ti

NUCLEAR REACTIONS 48Ti(polarized p, p'), E=65 MeV; measured σ(E(p)), σ(θ), analyzing power vs θ. 48Ti deduced levels, J, π, transfer L, octupole transition strength distribution.

doi: 10.1103/PhysRevC.39.1286
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1233.


1989KU26      Z.Phys. A334, 511 (1989)

S.Kubono, Y.Funatsu, N.Ikeda, M.Yasue, T.Nomura, Y.Fuchi, H.Kawashima, S.Kato, H.Orihara, H.Miyatake, T.Kajino

The Proton Threshold States in 21Mg Relevant to the rp-Process

NUCLEAR REACTIONS 24Mg(3He, 6He), E=73.71 MeV; measured σ(E(6He)), σ(θ); deduced rp-process relevance. 21Mg deduced levels, J, π, L.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1326.


1989MI17      Nucl.Phys. A501, 557 (1989)

H.Miyatake, T.Nomura, S.Kubono, J.Tanaka, M.Oyaizu, H.Okawa, N.Ikeda, K.Sueki, H.Kudo, K.Morita, T.Shinozuka

Alpha Decays of 221Pa and 218,219Ac

NUCLEAR REACTIONS 209Bi(16O, xn), (16O, xnα), E=87-102 MeV; measured α decay yields, Eα from residues. Gas-filled recoil separator.

RADIOACTIVITY 221Pa, 218,219Ac [from 205Tl, 209Bi(16O, xnα), E=87-102 MeV]; measured Eα, α-decay yields. 221Pa, 218,219Ac deduced T1/2, Qα. Gas-filled recoil separator.

doi: 10.1016/0375-9474(89)90148-6
Citations: PlumX Metrics


1988KU23      Z.Phys. A331, 359 (1988)

S.Kubono, N.Ikeda, M.Yasue, T.Nomura, Y.Fuchi, H.Kawashima, S.Kato, H.Orihara, T.Shinozuka, H.Ohnuma, H.Miyatake, T.Shimoda

The p + 19Ne s-Wave Resonant State in 20Na at Stellar Energies

NUCLEAR REACTIONS 20Ne(3He, t), E=55.33 MeV; measured σ(Et), σ(θ). 20Na deduced level, possible J, π.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1258.


1987MI18      Nucl.Phys. A470, 328 (1987)

H.Miyatake, K.Ogawa, T.Shinozuka, M.Fujioka

A Shell-Model Study of Gamow-Teller Matrix Elements in the 0f7/2 Shell Nuclei

NUCLEAR STRUCTURE 41,42,43,44,46,48,49Sc, 42,43,45Ti, 45,47Ca, 45,47,48V, 47,48,49Cr, 49,50,51,52Mn, 51,52,53Fe, 53,54Co, 55Ni; calculated Gamow-Teller transition strength. Shell model.

doi: 10.1016/0375-9474(87)90005-4
Citations: PlumX Metrics


1986KI11      Nucl.Phys. A455, 301 (1986)

M.Kikuchi, T.Ishimatsu, S.Hayashibe, N.Kawamura, Y.Kimura, K.Iura, H.Miyatake, M.Fujioka

In-Beam Spectroscopic Study of 107In

NUCLEAR REACTIONS, ICPND 106Cd(α, 2np), E=35-50 MeV; 106Cd(3He, np), E=20 MeV; measured E(γ), I(γ)(E), γ yield vs E, I(γ)(θ), γγ(t), pγ-coin, I(ce). 107In deduced levels, J, π, γ-branchings, ICC, δ(E2/M1). Enriched targets, hyperpure Ge, Si(Au), Si(Li) detectors, mini-orange electron spectrometer.

doi: 10.1016/0375-9474(86)90020-5
Citations: PlumX Metrics


1986KU18      Nucl.Instrum.Methods Phys.Res. A251, 74 (1986)

S.Kubono, M.H.Tanaka, H.Kawakami, K.Sueki, H.Miyatake, T.Nomura, K.Morita, M.Ishihara, S.Kato, C.Konno, A.Sakaguchi

High-Energy Gamma Ray Spectrometer for Heavy-Ion Induced Experiments

NUCLEAR REACTIONS 11B, 14N(p, γ), E=6.91 MeV; measured γ spectra. NaI(Tl) spectrometer.

doi: 10.1016/0168-9002(86)91151-4
Citations: PlumX Metrics


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