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NSR database version of April 11, 2024.

Search: Author = A.Takamine

Found 21 matches.

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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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2023IS02      Phys.Rev. C 107, 024306 (2023)

Y.Ishibashi, A.Gladkov, Y.Ichikawa, A.Takamine, H.Nishibata, T.Sato, H.Yamazaki, T.Abe, J.M.Daugas, T.Egami, T.Fujita, G.Georgiev, K.Imamura, T.Kawaguchi, W.Kobayashi, Y.Nakamura, A.Ozawa, M.Sanjo, N.Shimizu, D.Tominaga, L.C.Tao, K.Asahi, H.Ueno

Nuclear magnetic moment of the neutron-rich nucleus 21O

NUCLEAR MOMENTS 21O; measured Iβ, b(θ), β-NMR spectra; deduced g-factor, J and π of the ground state as 5/2+ based on comparison to single-particle g-factors, configuration, magnetic moment for the 5/2+ ground state. Comparison to shell-model predictions using the USD, YSOX, and SDPF-M interactions and to random phase approximation (RPA) based calculations. Measured with β-ray detected nuclear magnetic resonance (β-NMR) spectroscopy. Spin-polarized 21O beam produced in 9Be(22Ne, X), E=70 MeV/nucleon reaction, followed by separation of 21O fragments using RIPS separator at RIKEN.

doi: 10.1103/PhysRevC.107.024306
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2021KU30      Phys.Rev. C 104, 064610 (2021)

A.Kubiela, H.Suzuki, O.B.Tarasov, M.Pfutzner, D.-S.Ahn, H.Baba, A.Bezbakh, A.A.Ciemny, W.Dominik, N.Fukuda, A.Giska, R.Grzywacz, Y.Ichikawa, Z.Janas, L.Janiak, G.Kaminski, K.Kawata, T.Kubo, M.Madurga, C.Mazzocchi, H.Nishibata, M.Pomorski, Y.Shimizu, N.Sokolowska, D.Suzuki, P.Szymkiewicz, A.Swiercz, M.Tajima, A.Takamine, H.Takeda, Y.Takeuchi, C.R.Thornsberry, H.Ueno, H.Yamazaki, R.Yokoyama, K.Yoshida

Production of the most neutron-deficient Zn isotopes by projectile fragmentation of 78Kr

NUCLEAR REACTIONS 9Be(78Kr, X)54Zn/55Zn/56Zn, E=345 MeV/nucleon; measured reaction products, production σ using BigRIPS separator at the RIBF-RIKEN facility. Comparison of measured σ for Zn isotopes in this work, and for germanium, selenium, and krypton isotopes in other studies with predictions of the EPAX3 parametrization, LISE++ abrasion-ablation model using the HFB22 mass model and the AME2020 mass tables. Relevance to production of nuclei decaying by 2p radioactivity such as 54Zn.

doi: 10.1103/PhysRevC.104.064610
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2730.


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


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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2020BO04      Phys.Rev.Lett. 124, 112501 (2020)

F.Boulay, G.S.Simpson, Y.Ichikawa, S.Kisyov, D.Bucurescu, A.Takamine, D.S.Ahn, K.Asahi, H.Baba, D.L.Balabanski, T.Egami, T.Fujita, N.Fukuda, C.Funayama, T.Furukawa, G.Georgiev, A.Gladkov, M.Hass, K.Imamura, N.Inabe, Y.Ishibashi, T.Kawaguchi, T.Kawamura, W.Kim, Y.Kobayashi, S.Kojima, A.Kusoglu, R.Lozeva, S.Momiyama, I.Mukul, M.Niikura, H.Nishibata, T.Nishizaka, A.Odahara, Y.Ohtomo, D.Ralet, T.Sato, Y.Shimizu, T.Sumikama, H.Suzuki, H.Takeda, L.C.Tao, Y.Togano, D.Tominaga, H.Ueno, H.Yamazaki, X.F.Yang, J.M.Daugas

g Factor of the 99Zr(7/2+) Isomer: Monopole Evolution in the Shape-Coexisting Region

RADIOACTIVITY 99Zr(IT) [from 9Be(238U, X), E=345 MeV/nucleon];measured decay products, Eγ, Iγ; deduced g-ray energies, J, π, level scheme, g-factor using a method of time-differential perturbed angular distribution (TDPAD), T1/2. Comparison with IBFM-1 calculations.

doi: 10.1103/PhysRevLett.124.112501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019IC02      Nat.Phys. 15, 321 (2019)

Y.Ichikawa, H.Nishibata, Y.Tsunoda, A.Takamine, K.Imamura, T.Fujita, T.Sato, S.Momiyama, Y.Shimizu, D.S.Ahn, K.Asahi, H.Baba, D.L.Balabanski, F.Boulay, J.M.Daugas, T.Egami, N.Fukuda, C.Funayama, T.Furukawa, G.Georgiev, A.Gladkov, N.Inabe, Y.Ishibashi, T.Kawaguchi, T.Kawamura, Y.Kobayashi, S.Kojima, A.Kusoglu, I.Mukul, M.Niikura, T.Nishizaka, A.Odahara, Y.Ohtomo, T.Otsuka, D.Ralet, G.S.Simpson, T.Sumikama, H.Suzuki, H.Takeda, L.C.Tao, Y.Togano, D.Tominaga, H.Ueno, H.Yamazaki, X.F.Yang

Interplay between nuclear shell evolution and shape deformation revealed by the magnetic moment of 75Cu

NUCLEAR REACTIONS 27Al(76Zn, p)75Cu, E<345 MeV/nucleon; 9Be(238U, X)76Zn, E= 345 MeV/nucleon; measured reaction products, Eγ, Iγ. 75Cu; deduced γ-ray energies, J, π, nuclear magnetic moment. Comparison with theoretical calculations, systematics.

doi: 10.1038/s41567-018-0410-7
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Data from this article have been entered in the XUNDL database. For more information, click here.


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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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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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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2014TA10      Phys.Rev.Lett. 112, 162502 (2014)

A.Takamine, M.Wada, K.Okada, T.Sonoda, P.Schury, T.Nakamura, Y.Kanai, T.Kubo, I.Katayama, S.Ohtani, H.Wollnik, H.A.Schuessler

Hyperfine Structure Constant of the Neutron Halo Nucleus 11Be+

NUCLEAR MOMENTS 11Be; measured laser-microwave double resonance spectra; deduced hyperfine structure constants, nuclear magnetic moment. Comparison with available data.

doi: 10.1103/PhysRevLett.112.162502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2013IT01      Phys.Rev. C 88, 011306 (2013)

Y.Ito, P.Schury, M.Wada, S.Naimi, T.Sonoda, H.Mita, F.Arai, A.Takamine, K.Okada, A.Ozawa, H.Wollnik

Single-reference high-precision mass measurement with a multireflection time-of-flight mass spectrograph

ATOMIC MASSES 7,8Li, 9Be, 12C; measured time-of-flight (TOF) using a multireflection TOF mass spectrograph (MRTOF) at RIKEN facility. 8Li beam produced in 9Be(13C, X), E=100 MeV/nucleon. 7,8Li, 9Be; deduced mass excesses using 12C as a reference. Comparison with AME-12 values.

doi: 10.1103/PhysRevC.88.011306
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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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2011WA20      Hyperfine Interactions 199, 269 (2011)

M.Wada, A.Takamine, T.Sonoda, K.Okada, P.Schury

Developments at the SLOWRI facility at RIKEN: precision optical spectroscopy of 7, 9, 10, 11Be+ ions

NUCLEAR MOMENTS 7,9,10,11Be; measured microwave resonance and transition spectra; deduced the ground state hyperfine constants.

doi: 10.1007/s10751-011-0322-8
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2009SC30      Eur.Phys.J. A 42, 343 (2009)

P.Schury, K.Okada, S.Shchepunov, T.Sonoda, A.Takamine, M.Wada, H.Wollnik, Y.Yamazaki

Multi-reflection time-of-flight mass spectrograph for short-lived radioactive ions

doi: 10.1140/epja/i2009-10882-6
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2009TA35      Eur.Phys.J. A 42, 369 (2009)

A.Takamine, M.Wada, K.Okada, T.Nakamura, P.Schury, T.Sonoda, V.Lioubimov, H.Iimura, Y.Yamazaki, Y.Kanai, T.M.Kojima, A.Yoshida, T.Kubo, I.Katayama, S.Ohtani, H.Wollnik, H.A.Schuessler

Isotope shift measurements of 11, 9, 7Be+

ATOMIC PHYSICS 7,9,11Be; measured optical transition energy, hyperfine constant; deduced microwave resonance and optical-optical double-resonance spectra, ground-state hyperfine splittings. Cryogenic linear Paul trap.

doi: 10.1140/epja/i2009-10883-5
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2008OK01      Phys.Rev.Lett. 101, 212502 (2008)

K.Okada, M.Wada, T.Nakamura, A.Takamine, V.Lioubimov, P.Schury, Y.Ishida, T.Sonoda, M.Ogawa, Y.Yamazaki, Y.Kanai, T.M.Kojima, A.Yoshida, T.Kubo, I.Katayama, S.Ohtani, H.Wollnik, H.A.Schuessler

Precision Measurement of the Hyperfine Structure of Laser-Cooled Radioactive 7Be+ Ions Produced by Projectile Fragmentation

NUCLEAR MOMENTS 7Be; measured hyperfine splitting using laser-microwave double-resonance spectroscopy. Deduced nuclear magnetic moment.

doi: 10.1103/PhysRevLett.101.212502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2007WA24      Hyperfine Interactions 173, 153 (2007)

M.Wada, Y.Ishida, T.Nakamura, Y.Kanai, T.M.Kojima, A.Takamine, Y.Yamazaki, K.Okada, A.Yoshida, T.Kubo, I.Katayama, S.Ohtani, V.Varentsov, H.Wollnik, V.Lioubimov, H.A.Schuessler

Laser spectroscopy of trapped 7Be and 10Be at a prototype slow RI-beam facility of RIKEN

doi: 10.1007/s10751-007-9552-1
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