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NSR database version of April 11, 2024.

Search: Author = S.Watanabe

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2023OG02 Phys.Rev. C 108, 024604 (2023)

S.Ogawa, S.Watanabe, T.Matsumoto, K.Ogata

Systematic analysis of breakup reactions with t and ³He projectiles

NUCLEAR REACTIONS ⁴⁰Ca, ⁵⁸Ni, ⁹⁰Zr(³He, ³He), E=40, 70, 150 MeV/nucleon; calculated transferred momentum distribution for elastic σ(θ). ⁴⁰Ca, ⁵⁸Ni, ⁹⁰Zr(³He, X), E=40, 70, 150 MeV/nucleon; calculated breakup σ(E) into the d+p and p+p+n channels and total breakup σ(E), energy spectra of breakup σ. ⁴⁰Ca, ⁵⁸Ni, ⁹⁰Zr(d, X), E=40, 70, 150 MeV/nucleon; calculated energy spectra of breakup σ. ⁹⁰Zr(t, X), E=150 MeV/nucleon; calculated breakup σ. Four-body continuum-discretized coupled-channels method with the eikonal approximation (E-CDCC). Comparison to experimental data.

doi: 10.1103/PhysRevC.108.024604
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2021WA21 Phys.Rev. C 103, L031601 (2021)

S.Watanabe, K.Ogata, T.Matsumoto

Practical method for decomposing discretized breakup cross sections into components of each channel

NUCLEAR REACTIONS ¹H(¹¹Be, ¹¹Be), (¹¹Be, ¹¹Be'), E=63.7 MeV/nucleon; calculated decomposition of the approximate breakup cross sections (BUXs), energy distribution of the BUXs of target+¹¹Be into ¹⁰Be (g.s. and excited states)+n+target (three-body model). ²⁰⁸Pb(⁶Li, ⁶Li), (⁶Li, ⁶Li'), E=39, 210 MeV; predicted approximate breakup cross sections (BUXs) of target+⁶Li into n+p+α+target or d+α+target (four- and three-body models). Calculations based on continuum-discretized coupled-channel (CDCC) method using the approximation referred to as the 'probability separation' (P separation).

doi: 10.1103/PhysRevC.103.L031601
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2016SH21 Phys.Rev. C 93, 064314 (2016)

M.Shimada, S.Watanabe, S.Tagami, T.Matsumoto, Y.R.Shimizu, M.Yahiro

Simultaneous analysis of matter radii, transition probabilities, and excitation energies of Mg isotopes by angular-momentum-projected configuration-mixing calculations

NUCLEAR STRUCTURE ^{24,26,28,30,32,34,36,38,40}Mg; calculated potential-energy curves, level energies, rms matter radii, B(E2), β₂, and probability distributions for the first 2+ and 4+ states. Beyond-mean-field (BMF) calculations with angular-momentum-projected configuration mixing with respect to the axially symmetric β₂ deformation. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.064314
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2016YA05 Phys.Rev. C 93, 064609 (2016)

M.Yahiro, S.Watanabe, M.Toyokawa, T.Matsumoto

Proposal of a directly measurable parameter quantifying the halo nature of one-neutron nuclei

NUCLEAR REACTIONS ¹²C(p, X), (¹⁵C, X), (³¹Ne, X), E<1000 MeV; analyzed reaction σ(E) data to determine halo parameters. ¹¹Be, ^12,15,17,19C, ³¹Ne, ³⁷Mg; deduced halo parameters. Calculations based on the eikonal+adiabatic approximation using Glauber formula.

doi: 10.1103/PhysRevC.93.064609
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2015NI08 J.Radioanal.Nucl.Chem. 304, 1077 (2015)

I.Nishinaka, A.Yokoyama, K.Washiyama, E.Maeda, S.Watanabe, K.Hashimoto, N.S.Ishioka, H.Makii, A.Toyoshima, N.Yamada, R.Amano

Production and separation of astatine isotopes in the ⁷Li + ^natPb reaction

NUCLEAR REACTIONS Pb(⁷Li, X)²⁰⁷At/²⁰⁸At/²⁰⁹At/²¹⁰At/²¹¹At, E=29-57 MeV; measured reaction products, Eα, Iα, Eγ, Iγ; deduced production σ. Comparison with the predictions of the statistical calculation using the modified HIVAP code.

doi: 10.1007/s10967-015-3975-y
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2481.

2015WA32 Phys.Rev. C 92, 044611 (2015)

S.Watanabe, T.Matsumoto, K.Ogata, M.Yahiro

Four-body dynamics in ⁶Li elastic scattering

NUCLEAR REACTIONS ²⁰⁹Bi(⁶Li, X), E=24-50 MeV; ²⁰⁸Pb(⁶Li, X), E(cm)=29-210 MeV; calculated σ(θ, E), total σ(E), distribution of dα probability in excitation spectrum, Dominant d+α channel for ⁶Li breakup in elastic scattering. Four-body (n+p+α+target) model of the continuum-discretized coupled channels method (CDCC). Comparison to experimental data.

doi: 10.1103/PhysRevC.92.044611
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2014SA38 J.Phys.Soc.Jpn. 83, 073201 (2014)

N.Sato, K.Tsukada, S.Watanabe, N.S.Ishioka, M.Kawabata, H.Saeki, Y.Nagai, T.Kin, F.Minato, N.Iwamoto, O.Iwamoto

First Measurement of the Radionuclide Purity of the Therapeutic Isotope ⁶⁷Cu Produced by ⁶⁸Zn(n, x) Reaction Using ^natC(d, n) Neutrons

NUCLEAR REACTIONS ⁶⁸Zn(n, X)⁶⁴Cu/⁶⁷Cu/⁶⁹Zn/⁶⁵Zn/⁶⁵Ni/⁶⁶Ni, E<40 MeV; measured reaction products, Eγ, Iγ; deduced yields. Comparison with CCONE nuclear model code calculations.

doi: 10.7566/JPSJ.83.073201
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2014TA32 Phys.Rev. C 90, 061305 (2014)

M.Takechi, S.Suzuki, D.Nishimura, M.Fukuda, T.Ohtsubo, M.Nagashima, T.Suzuki, T.Yamaguchi, A.Ozawa, T.Moriguchi, H.Ohishi, T.Sumikama, H.Geissel, N.Aoi, R.-J.Chen, D.-Q.Fang, N.Fukuda, S.Fukuoka, H.Furuki, N.Inabe, Y.Ishibashi, T.Itoh, T.Izumikawa, D.Kameda, T.Kubo, M.Lantz, C.S.Lee, Y.-G.Ma, K.Matsuta, M.Mihara, S.Momota, D.Nagae, R.Nishikiori, T.Niwa, T.Ohnishi, K.Okumura, M.Ohtake, T.Ogura, H.Sakurai, K.Sato, Y.Shimbara, H.Suzuki, H.Takeda, S.Takeuchi, K.Tanaka, M.Tanaka, H.Uenishi, M.Winkler, Y.Yanagisawa, S.Watanabe, K.Minomo, S.Tagami, M.Shimada, M.Kimura, T.Matsumoto, Y.R.Shimizu, M.Yahiro

Evidence of halo structure in ³⁷Mg observed via reaction cross sections and intruder orbitals beyond the island of inversion

NUCLEAR REACTIONS ¹²C(²⁴Mg, X), (²⁵Mg, X), (²⁶Mg, X), (²⁷Mg, X), (²⁸Mg, X), (²⁹Mg, X), (³⁰Mg, X), (³¹Mg, X), (³²Mg, X), (³³Mg, X), (³⁴Mg, X), (³⁵Mg, X), (³⁶Mg, X), (³⁷Mg, X), (³⁸Mg, X), E=240 MeV/nucleon, [secondary Mg beams from ⁹Be(⁴⁸Ca, X), E=345 MeV/nucleon primary reaction]; measured spectra and TOF of outgoing particles, precise reaction σ using BigRIPS spectrometer at RIBF-RIKEN facility. Comparison with theoretical deformation parameter β₂ versus mass plot using double-folding model (DFM) calculation combined with antisymmetrized molecular dynamics (AMD) calculation. ³⁷Mg; deduced deformed halo effect from observed enhanced cross section, comparison with DFM calculation based on the deformed Woods-Saxon (DWS) model; collapse of N=28 magic shell for neutrons.

doi: 10.1103/PhysRevC.90.061305
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2471.

2014WA14 Phys.Rev. C 89, 044610 (2014)

S.Watanabe, K.Minomo, M.Shimada, S.Tagami, M.Kimura, M.Takechi, M.Fukuda, D.Nishimura, T.Suzuki, T.Matsumoto, Y.R.Shimizu, M.Yahiro

Ground-state properties of neutron-rich Mg isotopes

NUCLEAR REACTIONS ¹²C(²⁴Mg, X), (²⁵Mg, X), (²⁶Mg, X), (²⁷Mg, X), (²⁸Mg, X), (²⁹Mg, X), (³⁰Mg, X), (³¹Mg, X), (³²Mg, X), (³³Mg, X), (³⁴Mg, X), (³⁵Mg, X), (³⁶Mg, X), (³⁷Mg, X), (³⁸Mg, X), E=240 MeV/nucleon; calculated reaction σ; deduced rms matter radii from reaction cross sections. Antisymmetrized molecular dynamics (AMD) with folding model and deformed Woods-Saxon model. Comparison with experimental data, and with other theoretical calculations.

NUCLEAR STRUCTURE ^{24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40}Mg; calculated ground state binding J, π, S(n), S(2n) for ⁴⁰Mg, β and γ deformation parameters, proton, neutron and matter radii, neutron skin thickness. ³⁷Mg; calculated levels, J, π, neutron single-particle energies. Antisymmetrized molecular dynamics (AMD) with folding model and deformed Woods-Saxon model. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044610
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2012MI22 Prog.Theor.Phys.(Kyoto), Suppl. 196, 358 (2012)

K.Minomo, S.Watanabe, T.Sumi, M.Kimura, K.Ogata, Y.R.Shimizu, M.Yahiro

Deformation Effect on Total Reaction Cross Sections for Neutron-Rich Ne-Isotopes

NUCLEAR REACTIONS ¹²C(²⁸Ne, ²⁸Ne'), (²⁹Ne, ²⁹Ne'), (³⁰Ne, ³⁰Ne'), (³¹Ne, ³¹Ne'), (³²Ne, ³²Ne'), E=240 MeV/nucleon; analyzed available data. ^{28,29,30,31,32}Ne; deduced σ using antisymmetrized molecular dynamics. Comparison with available data.

doi: 10.1143/PTPS.196.358
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2012WA28 Phys.Rev. C 86, 031601 (2012)

S.Watanabe, T.Matsumoto, K.Minomo, K.Ogata, M.Yahiro

Effects of four-body breakup on ⁶Li elastic scattering near the Coulomb barrier

NUCLEAR REACTIONS ²⁰⁹Bi(⁶Li, ⁶Li), E=29.9, 32.8 MeV; ²⁰⁹Bi(n, n), E=5 MeV; ²⁰⁹Bi(d, d), E=12.8 MeV; analyzed σ(θ) using three-body (d+α+²⁰⁹Bi) and four-body (p+n+α+²⁰⁹Bi) continuum-discretized coupled-channels (CDCC) model. Projectile breakup effects.

doi: 10.1103/PhysRevC.86.031601
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2012YA15 Prog.Theor.Phys.(Kyoto), Suppl. 196, 87 (2012)

M.Yahiro, T.Matsumoto, K.Minomo, T.Sumi, S.Watanabe

Recent Development of CDCC

NUCLEAR REACTIONS ²⁰⁸Pb(³¹Ne, n), (³¹Ne, 2n), E=234 MeV/nucleon; ¹²C(³¹Ne, n), (³¹Ne, 2n), E=230 MeV/nucleon; calculated partial σ. Comparison with available data.

doi: 10.1143/PTPS.196.87
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2008KA22 J.Radioanal.Nucl.Chem. 277, 467 (2008)

T.Katabuchi, S.Watanabe, N.S.Ishioka, Y.Iida, H.Hanaoka, K.Endo, S.Matsuhashi

Production of ⁶⁷Cu via the ⁶⁸Zn(p, 2p)⁶⁷Cu reaction and recovery of ⁶⁸Zn target

doi: 10.1007/s10967-007-7144-9
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2004SC37 Acta Phys.Hung.N.S. 19, 165 (2004)

C.Scheidenberger, F.Attallah, K.Beckert, P.Beller, F.Bosch, D.Boutin, H.Eickhoff, T.Faestermann, M.Falch, B.Franczak, B.Franzke, H.Geissel, M.Hausmann, M.Hellstrom, E.Kaza, Th.Kerscher, O.Klepper, H.-J.Kluge, R.Koyama, C.Kozhuharov, K.-L.Kratz, Yu.A.Litvinov, K.Lobner, L.Maier, M.Matos, G.Munzenberg, F.Nolden, Yu.N.Novikov, T.Ohtsubo, A.Ostrowski, A.Ozawa, Z.Patyk, B.Pfeiffer, M.Portillo, W.Quint, T.Radon, V.Shishkin, J.Stadlmann, M.Steck, K.Summerer, T.Suzuki, M.B.Trzhaskovskaya, D.J.Vieira, S.Watanabe, H.Weick, M.Winkler, H.Wollnik, T.Yamaguchi

Study of Basic Nuclear Properties of Highly-Charged Unstable Nuclei at the SIS-FRS-ESR Complex

doi: 10.1556/APH.19.2004.1-2.27
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2003OZ01 Phys.Rev. C 67, 014610 (2003)

A.Ozawa, Y.Yamaguchi, M.Chiba, R.Kanungo, K.Kimura, S.Momota, T.Suda, T.Suzuki, I.Tanihata, T.Zheng, S.Watanabe, T.Yamaguchi, K.Yoshida

Search for ²¹B

NUCLEAR REACTIONS Be, Ta(⁴⁰Ar, X)¹⁵B/¹⁷B/¹⁹B/¹⁷C/¹⁹C/²⁰C/²²C/²²N/²³N/²³O/²⁴O/²⁵F/²⁶F, E=94 MeV/nucleon; measured production σ; deduced no evidence for ²¹B. ²¹B deduced particle instability. Comparison with previous data.

doi: 10.1103/PhysRevC.67.014610
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1814.

2002KU12 Eur.Phys.J. A 13, 217 (2002)

S.Kubono, Y.Yanagisawa, T.Teranishi, S.Kato, T.Kishida, S.Michimasa, Y.Ohshiro, S.Shimoura, K.Ue, S.Watanabe, N.Yamazaki

New Low-Energy RIB Separator CRIB for Nuclear Astrophysics

doi: 10.1007/s10050-002-8745-x
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2002SU12 Phys.Rev.Lett. 89, 012501 (2002)

T.Suzuki, Y.Ogawa, M.Chiba, M.Fukuda, N.Iwasa, T.Izumikawa, R.Kanungo, Y.Kawamura, A.Ozawa, T.Suda, I.Tanihata, S.Watanabe, T.Yamaguchi, Y.Yamaguchi

Momentum Distribution of ¹⁵B Fragments from the Breakup of ¹⁷B

NUCLEAR REACTIONS ⁹Be(¹⁷B, ¹⁵BX), E=70 MeV/nucleon; measured fragment longitudinal momentum distribution, two-neutron removal σ. ¹⁷B deduced halo structure. Glauber-type analysis.

doi: 10.1103/PhysRevLett.89.012501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1780.

1997KA66 Nucl.Phys. A626, 545c (1997)

T.Katayama, Y.Batygin, N.Inabe, K.Ohtomo, T.Ohkawa, M.Takanaka, M.Wakasugi, S.Watanabe, Y.Yano, K.Yoshida, J.Xia, Y.Rao, Y.Yuan