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NSR database version of April 11, 2024.

Search: Author = R.J.Chen

Found 28 matches.

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2024SU04      Chin.Phys.C 48, 034002 (2024)

M.Z.Sun, Y.Yu, X.P.Wang, M.Wang, J.G.Li, Y.H.Zhang, K.Blaum, Z.Y.Chen, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, W.J.Huang, H.Y.Jiao, H.H.Li, H.F.Li, Y.F.Luo, T.Liao, Yu.A.Litvinov, M.Si, P.Shuai, J.Y.Shi, Q.Wang, Y.M.Xing, X.Xu, H.S.Xu, F.R.Xu, Q.Yuan, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, X.H.Zhou, X.Zhou, M.Zhang, Q.Zeng

Ground-state mass of 22Al and test of state-of-the-art ab initio calculations

NUCLEAR STRUCTURE 22Al, 22F; calculated test of the state-of-the-art ab initio valence-space in-medium similarity renormalization group calculations with four sets of interactions derived from the chiral effective field theory using excitation energies and mirror energy differences.

doi: 10.1088/1674-1137/ad1a0a
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2023LI31      Eur.Phys.J. A 59, 102 (2023)

Y.A.Litvinov, R.J.Chen

Radioactive decays of stored highly charged ions

COMPILATION 19Ne, 49Cr(β+), 52Mn(β+), (IT), 52Fe(β+), 53Fe(β+), (IT), 72Ge(2γ), 94Ru(IT), 122I(β+), 133Sb, 125Ce(IT), 140Pr, 142Pm(β+), 144Tb, 149Dy(β+), (IT), 163Dy(β-), 151Er(β+), (IT), 183,184Hf, 186Hf(β-), (IT), 168Ta(β+), 186Ta, 187Ta(β-), (IT), 186W(IT), 187Re(β-), 192Re, 192Os, 195Os(β-), (IT), 205Hg(β+), (β-), 205Tl(β-), 207Tl(β+), (β-), 213Tl(β-), 212Bi(IT), 221,222Po, 224At, 234,235,236Ac(β-); compiled decay modes, T1/2 and methods for storage rings results. Comparison with ENSDF values.

doi: 10.1140/epja/s10050-023-00978-w
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2023WA10      Phys.Rev.Lett. 130, 192501 (2023)

M.Wang, Y.H.Zhang, X.Zhou, X.H.Zhou, H.S.Xu, M.L.Liu, J.G.Li, Y.F.Niu, W.J.Huang, Q.Yuan, S.Zhang, F.R.Xu, Y.A.Litvinov, K.Blaum, Z.Meisel, R.F.Casten, R.B.Cakirli, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, Y.N.Song, M.Z.Sun, Q.Wang, Y.M.Xing, X.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, M.Zhang

Mass Measurement of Upper fp-Shell N = Z - 2 and N = Z - 1 Nuclei and the Importance of Three-Nucleon Force along the N = Z Line

ATOMIC MASSES 58Zn, 60Ga, 62Ge, 64As, 66Se, 70Kr, 61Ga, 63Ge, 65As, 67Se, 71Kr, 75Sr; measured time-of-flight (TOF); deduced mass excess (ME). A novel method of isochronous mass spectrometry, the Heavy Ion Research Facility in Lanzhou (HIRFL).

doi: 10.1103/PhysRevLett.130.192501
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2023XI01      Phys.Rev. C 107, 014304 (2023)

Y.M.Xing, C.X.Yuan, M.Wang, Y.H.Zhang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, H.S.Xu, T.Bao, R.J.Chen, C.Y.Fu, B.S.Gao, W.W.Ge, J.J.He, W.J.Huang, T.Liao, J.G.Li, H.F.Li, S.Litvinov, S.Naimi, P.Shuai, M.Z.Sun, Q.Wang, X.Xu, F.R.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, M.Zhang, X.Zhou

Isochronous mass measurements of neutron-deficient nuclei from 112Sn projectile fragmentation

ATOMIC MASSES 69As, 73Br, 75Kr, 79Sr, 81Y, 87Mo, 87mMo, 91Ru, 91mRu, 93Rh, 93mRh, 95Pd, 95mPd, 103Sn; measured revolution times of stored ions, ToF; deduced mass excesses. 27Al, 29Si, 31P, 33S, 35Cl, 37Ar, 39,40K, 41,42Ca, 43,43mSc, 46Ti, 47,48V, 50,49Cr, 51,52,52mMn, 51m,53,54Fe, 55,56,57Co, 57,58,59Ni, 59,60,61Cu, 62,63Zn, 63,65Ga, 65,66Ge, 67,68,69,70Se, 71Br, 73,74Kr, 75,76,77Rb, 77,78Sr, 82Zr, 84Nb, 86Mo, 90Ru, 94Pd, 97,97mAg, 99Cd, 101,101mIn; analyzed masses by comparing to previously measured values and AME2020 evaluation. 87Mo, 91Ru, 93Rh, 95Pd; deduced isomer ratios, isomeric states and assigned J, π values as 1/2- from systematics. 91mRu; deduced mass excess based on the precise measured value for 90Mo. 104Sb, 107Te, 108I, 111Xe, 112Cs; deduced mass excess based on measured mass excess value for 103Sn and literature Q values for α- and p-decays. Systematics of 1/2- isomers in Zr, Mo, Ru, Pd and Cd isotopes and comparison to shell-model calculations. Comparison to AME2020 and NUBASE2020. Isochronous mass spectrometry at the Cooler Storage Ring in Lanzhou of the fragments from 9Be(112Sn, X), E=400.88 MeV/nucleon reaction.

NUCLEAR REACTIONS 9Be(112Sn, X), E=400.88 MeV/nucleon; measured reaction products, number of produced fragments. 87,87mMo, 91,91mRu, 93,93mRh, 95,95mPd; deduced isomeric ratios.

doi: 10.1103/PhysRevC.107.014304
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2023YA30      Phys.Rev.Lett. 131, 242501 (2023)

Z.H.Yang, Y.L.Ye, B.Zhou, H.Baba, R.J.Chen, Y.C.Ge, B.S.Hu, H.Hua, D.X.Jiang, M.Kimura, C.Li, K.A.Li, J.G.Li, Q.T.Li, X.Q.Li, Z.H.Li, J.L.Lou, M.Nishimura, H.Otsu, D.Y.Pang, W.L.Pu, R.Qiao, S.Sakaguchi, H.Sakurai, Y.Satou, Y.Togano, K.Tshoo, H.Wang, S.Wang, K.Wei, J.Xiao, F.R.Xu, X.F.Yang, K.Yoneda, H.B.You, T.Zheng

Observation of the Exotic 0+2 Cluster State in 8He

NUCLEAR REACTIONS C, 1H(8He, 8He), E=82.3 MeV/nucleon; measured reaction products, En, In. 6,8He; deduced σ(θ), resonant state J, π, large isoscalar monopole transition strength, and the emission of a strongly correlated neutron pair. Comparison with theoretical calculations. RIPS beam line of RIKEN Nishina Center.

doi: 10.1103/PhysRevLett.131.242501
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2023ZH10      Eur.Phys.J. A 59, 27 (2023)

M.Zhang, X.Zhou, M.Wang, Y.H.Zhang, Yu.A.Litvinov, H.S.Xu, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, R.S.Sidhu, Y.N.Song, M.Z.Sun, S.Suzuki, Q.Wang, Y.M.Xing, X.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, X.H.Zhou

Bρ-defined isochronous mass spectrometry and mass measurements of 58Ni fragments

ATOMIC MASSES 23Al, 25Si, 27P, 31Cl, 33Ar, 35K, 37Ca, 41Ti, 43V, 45Cr, 47Mn, 49Fe, 51Co, 53Ni, 55Cu, 43Ti, 44,44mV, 46Cr, 48Mn, 50,51Fe, 52,52mCo, 54Ni, 56Cu, 24,24mAl, 44,44mV, 52,52mCo; measured revolution time spectrum, frequencies; deduced masses, energy differences between the ground states and isomers. The experimental cooler-storage ring CSRe in Lanzhou.

doi: 10.1140/epja/s10050-023-00928-6
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2022WA39      Phys.Rev. C 106, L051301 (2022)

M.Wang, M.Zhang, X.Zhou, Y.H.Zhang, Yu.A.Litvinov, H.S.Xu, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, M.Si, R.S.Sidhu, Y.N.Song, M.Z.Sun, S.Suzuki, Q.Wang, Y.M.Xing, X.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, X.H.Zhou

Bρ-defined isochronous mass spectrometry: An approach for high-precision mass measurements of short-lived nuclei

ATOMIC MASSES 44,44mV, 46Cr, 48Mn, 50,51Fe, 52,52mCo, 54Ni, 56Cu, 43Ti; measured velocity and revolution time of stored ions; deduced mass excess. 52Co; deduced S(p). Introduced technique for broadband high-precision mass spectrometry based on simultaneous determinations of revolution time and velocity of short-lived stored ions at the cooler storage ring CSRe in Lanzhou.Comparison to AME2020 values and other experimental results.

RADIOACTIVITY 46Cr, 50Fe, 54Ni(EC); deduced Q values, ft using the values of mass excess obtained in this paper.

doi: 10.1103/PhysRevC.106.L051301
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2020FU05      Phys.Rev. C 102, 054311 (2020)

C.Y.Fu, Y.H.Zhang, M.Wang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, H.S.Xu, X.Xu, P.Shuai, Y.H.Lam, R.J.Chen, X.L.Yan, X.C.Chen, J.J.He, S.Kubono, M.Z.Sun, X.L.Tu, Y.M.Xing, Q.Zeng, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

Mass measurements for the Tz= -2 fp-shell nuclei 40Ti, 44Cr, 46Mn, 48Fe, 50Co, and 52Ni

ATOMIC MASSES 40Ti, 44Cr, 46Mn, 48Fe, 50Co, 52Ni; measured revolution time spectrum of stored ions by time-of-flight detectors, and mass excesses using isochronous mass spectrometry at CSRe-HIRFL, Lanzhou. Isotopes produced in 9Be(58Ni, X), E=468 MeV/nucleon reaction and separated using RIBLL2. Comparison with AME-2016 evaluation, and with theoretical calculations using four mass-models. A=44, 46, 50, 52; analyzed isospin multiplet mass equation (IMME) and T=2 quintets. 44V; proposed isobaric analog state (IAS).

RADIOACTIVITY 44Cr(β+), (β+p); analyzed decay scheme; deduced β feedings, logft values, B(GT) from the branching ratios of β+-delayed protons and Q values.

doi: 10.1103/PhysRevC.102.054311
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2019OZ03      Phys.Lett. B 797, 134800 (2019)

F.C.Ozturk, B.Akkus, D.Atanasov, H.Beyer, F.Bosch, D.Boutin, C.Brandau, P.Buhler, R.B.Cakirli, R.J.Chen, W.D.Chen, X.C.Chen, I.Dillmann, C.Dimopoulou, W.Enders, H.G.Essel, T.Faestermann, O.Forstner, B.S.Gao, H.Geissel, R.Gernhauser, R.E.Grisenti, A.Gumberidze, S.Hagmann, T.Heftrich, M.Heil, M.O.Herdrich, P.-M.Hillenbrand, T.Izumikawa, P.Kienle, C.Klaushofer, C.Kleffner, C.Kozhuharov, R.K.Knobel, O.Kovalenko, S.Kreim, T.Kuhl, C.Lederer-Woods, M.Lestinsky, S.A.Litvinov, Yu.A.Litvinov, Z.Liu, X.W.Ma, L.Maier, B.Mei, H.Miura, I.Mukha, A.Najafi, D.Nagae, T.Nishimura, C.Nociforo, F.Nolden, T.Ohtsubo, Y.Oktem, S.Omika, A.Ozawa, N.Petridis, J.Piotrowski, R.Reifarth, J.Rossbach, R.Sanchez, M.S.Sanjari, C.Scheidenberger, R.S.Sidhu, H.Simon, U.Spillmann, M.Steck, Th.Stohlker, B.H.Sun, L.A.Susam, F.Suzaki, T.Suzuki, S.Yu.Torilov, C.Trageser, M.Trassinelli, S.Trotsenko, X.L.Tu, P.M.Walker, M.Wang, G.Weber, H.Weick, N.Winckler, D.F.A.Winters, P.J.Woods, T.Yamaguchi, X.D.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Y.H.Zhang, X.H.Zhou

New test of modulated electron capture decay of hydrogen-like 142Pm ions: Precision measurement of purely exponential decay

RADIOACTIVITY 142Pm(EC); measured decay products; deduced T1/2.

doi: 10.1016/j.physletb.2019.134800
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2019XU09      Phys.Rev. C 99, 064303 (2019)

X.Xu, M.Wang, K.Blaum, J.D.Holt, Yu.A.Litvinov, A.Schwenk, J.Simonis, S.R.Stroberg, Y.H.Zhang, H.S.Xu, P.Shuai, X.L.Tu, X.H.Zhou, F.R.Xu, G.Audi, R.J.Chen, X.C.Chen, C.Y.Fu, Z.Ge, W.J.Huang, S.Litvinov, D.W.Liu, Y.H.Lam, X.W.Ma, R.S.Mao, A.Ozawa, B.H.Sun, Y.Sun, T.Uesaka, G.Q.Xiao, Y.M.Xing, T.Yamaguchi, Y.Yamaguchi, X.L.Yan, Q.Zeng, H.W.Zhao, T.C.Zhao, W.Zhang, W.L.Zhan

Masses of neutron-rich 52-54Sc and 54, 56Ti nuclides: The N=32 subshell closure in scandium

ATOMIC MASSES 52,53,54Sc, 54,56Ti; measured mass excesses using isochronous mass spectrometry at CRSe-HIRFL, Lanzhou. Isotopes produced in 9Be(86Kr, X), E=460.65 MeV/nucleon reaction and separated using RIBLL2. Comparison with AME-2012 evaluation, and results from six previous experiments, and with valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(2n) values in N=27-34 K, Ca, Sc, Ti isotopic chains, and those of empirical shell gaps in N=24-34 K, Ca, Sc, Ti isotopic chains and Z=19-25 N=32 isotones.

doi: 10.1103/PhysRevC.99.064303
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2019XU13      Phys.Rev. C 100, 051303 (2019)

X.Xu, J.H.Liu, C.X.Yuan, Y.M.Xing, M.Wang, Y.H.Zhang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, R.J.Chen, X.C.Chen, C.Y.Fu, B.S.Gao, J.J.He, S.Kubono, Y.H.Lam, H.F.Li, M.L.Liu, X.W.Ma, P.Shuai, M.Si, M.Z.Sun, X.L.Tu, Q.Wang, H.S.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, P.Zhang, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, S.Naimi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, K.Kaneko, Y.Sun, F.R.Xu

Masses of ground and isomeric states of 101In and configuration-dependent shell evolution in odd-$A$ indium isotopes

ATOMIC MASSES 101In, 101mIn; measured mass excesses using storage-ring based isochronous mass spectrometry technique; deduced energy of the isomeric state. Comparison with systematic values in AME-2016 values. Systematics of 1/2- isomeric states in 101,103,105,107,109,111In, data from the present experiment for 101In and from the ENSDF database for others.

NUCLEAR STRUCTURE 101,103,105,107,109,111,113In; calculated energies of the 1/2- isomeric levels, neutron occupation numbers for 1/2- and 9/2+ levels, neutron effective single-particle energies of ν1g7/2 with respect to ν2d5/2 for 9/2+ and 1/2- levels using state-of-the-art shell-model calculations. Comparison with available experimental data.

NUCLEAR REACTIONS 9Be(112Sn, X)31P/33S/35Cl/37Ar/39K/58Ni/60Cu/62Zn/64Ga/66Ge/68As/70Se/72Br/74Rb/76Rb/78Sr/80Y/89Tc/91Ru/91mRu/93Rh/95Pd/95mPd/97Ag/99Cd/101In/101mIn/103Sn, E=400.88 MeV/nucleon; measured reaction products selected and analyzed by RIBLL2 separator, and revolution time spectrum at the Cooler Storage Ring (CSR) accelerator complex of HIRFL-Lanzhou facility.

doi: 10.1103/PhysRevC.100.051303
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2018FU11      Phys.Rev. C 98, 014315 (2018)

C.Y.Fu, Y.H.Zhang, X.H.Zhou, M.Wang, Yu.A.Litvinov, K.Blaum, H.S.Xu, X.Xu, P.Shuai, Y.H.Lam, R.J.Chen, X.L.Yan, T.Bao, X.C.Chen, H.Chen, J.J.He, S.Kubono, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, P.Zhang, Q.Zeng, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

Masses of the Tz = -3/2 nuclei 27P and 29S

ATOMIC MASSES 27P, 29S; measured revolution time spectrum, and mass excesses using isochronous mass spectrometry (IMS) technique at Cooler Storage Ring (CSR) of HIRFL-Lanzhou facility. 29S, 29P, 29Si, 29Al; analyzed linear and quadratic coefficients of the isobaric multiplet mass equation (IMME). Comparison with AME-2016 values. 27P, 29S; isotopes produced in 9Be(58Ni, X), E=468 MeV/nucleon reaction, and using RIBLL2 fragment separator.

doi: 10.1103/PhysRevC.98.014315
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2018XI04      Phys.Lett. B 781, 358 (2018)

Y.M.Xing, K.A.Li, Y.H.Zhang, X.H.Zhou, M.Wang, Yu.A.Litvinov, K.Blaum, S.Wanajo, S.Kubono, G.Martinez-Pinedo, A.Sieverding, R.J.Chen, P.Shuai, C.Y.Fu, X.L.Yan, W.J.Huang, X.Xu, X.D.Tang, H.S.Xu, T.Bao, X.C.Chen, B.S.Gao, J.J.He, Y.H.Lam, H.F.Li, J.H.Liu, X.W.Ma, R.S.Mao, M.Si, M.Z.Sun, X.L.Tu, Q.Wang, J.C.Yang, Y.J.Yuan, Q.Zeng, P.Zhang, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, C.Frohlich, T.Rauscher, F.-K.Thielemann, B.H.Sun, Y.Sun, A.C.Dai, F.R.Xu

Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes

ATOMIC MASSES 78,79Y, 80,81Zr, 82,83,84Nb, 84Mo; measured revolution time spectrum; deduced mass excess values and proton separation energies. Comparison with available data.

doi: 10.1016/j.physletb.2018.04.009
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2018ZH29      Phys.Rev. C 98, 014319 (2018)

Y.H.Zhang, P.Zhang, X.H.Zhou, M.Wang, Yu.A.Litvinov, H.S.Xu, X.Xu, P.Shuai, Y.H.Lam, R.J.Chen, X.L.Yan, T.Bao, X.C.Chen, H.Chen, C.Y.Fu, J.J.He, S.Kubono, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, Q.Zeng, X.Zhou, W.L.Zhan, S.Litvinov, K.Blaum, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

Isochronous mass measurements of Tz = -1 fp-shell nuclei from projectile fragmentation of 58Ni

ATOMIC MASSES 43Ti, 44,44m,45V, 46,47Cr, 48,49Mn, 50,51Fe, 52,52mCo, 54Ni, 56Cu; measured time revolution spectra, and mass excesses using isochronous mass spectrometry (IMS) technique using Cooler Storage Ring (CSRm) at HIRFL-Lanzhou. Comparison with AME-2012 evaluation, and with predictions of several mass models. 52,52mCo, 44,44mV; deduced precise energies of the isomeric states from direct mass measurements, and compared with previously known values. 52,52mCo, 52Mn; deduced revised level energies in 52Co from new mass measurements for 52,52mCo and known level energies in 52Mn mirror nucleus. 56Co, 56Cu; deduced revised 56Cu level energies from new mass measurement for 56Cu and using known level energies of 56Co mirror nucleus. 52Co, 52Fe, 52Mn, 52Cr; analyzed quadratic and cubic fit coefficients of the isobaric multiplet mass equation (IMME). Discussed impact of new mass measurements on different aspects in nuclear structure. Isotopes produced in 9Be(58Ni, X), E=467.91 MeV/nucleon reaction, and fragments separated using RIBLL2 separator at Lanzhou.

doi: 10.1103/PhysRevC.98.014319
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2017TU01      Phys.Rev. C 95, 014610 (2017)

X.L.Tu, A.Kelic-Heil, Yu.A.Litvinov, Zs.Podolyak, Y.H.Zhang, W.J.Huang, H.S.Xu, K.Blaum, F.Bosch, R.J.Chen, X.C.Chen, C.Y.Fu, B.S.Gao, Z.Ge, Z.G.Hu, D.W.Liu, S.A.Litvinov, X.W.Ma, R.S.Mao, B.Mei, P.Shuai, B.H.Sun, Y.Sun, Z.Y.Sun, P.M.Walker, M.Wang, N.Winckler, J.W.Xia, G.Q.Xiao, Y.M.Xing, X.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, W.Zhang, H.W.Zhao, T.C.Zhao, X.H.Zhou

Application of isochronous mass spectrometry for the study of angular momentum population in projectile fragmentation reactions

NUCLEAR REACTIONS 9Be(78Kr, X)53Fe/53mFe/53Co/53mCo, E=479.4 MeV/nucleon; measured revolution time spectra of the isomeric and ground states of 53Co and 53Fe using isochronous mass spectrometry (IMS) technique at HIRFL-CSR-Lanzhou facility; deduced isomeric ratios for the 19/2 state, and compared with the predictions of theoretical calculations using ABRABLA07 code. 53Fe; calculated production probability of 53Fe versus spin using ABRABLA07 code for the 58Ni, 78Kr, 84Kr, and 112Sn projectiles.

doi: 10.1103/PhysRevC.95.014610
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2017ZE02      Phys.Rev. C 96, 031303 (2017)

Q.Zeng, M.Wang, X.H.Zhou, Y.H.Zhang, X.L.Tu, X.C.Chen, X.Xu, Yu.A.Litvinov, H.S.Xu, K.Blaum, R.J.Chen, C.Y.Fu, Z.Ge, W.J.Huang, H.F.Li, J.H.Liu, B.Mei, P.Shuai, M.Si, B.H.Sun, M.Z.Sun, Q.Wang, G.Q.Xiao, Y.M.Xing, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Y.D.Zang, P.Zhang, W.Zhang, X.Zhou

Half-life measurement of short-lived 94m44Ru44+ using isochronous mass spectrometry

RADIOACTIVITY 94mRu(IT)[from 9Be(112Sn, X), E=376.42 MeV/nucleon]; measured half-life of the fully-ionized (bare) ions of 8+ isomeric state at 2644 keV at the Experimental Cooler Storage Ring (CSRe) in Heavy Ion Research Facility (HIRFL), Lanzhou; deduced ICC. Comparison with calculations using BrIcc code, and with theoretical predictions. See also 2017Ch37 from the same laboratory for a detailed statistical analysis for extraction of half-life from experimental data.

ATOMIC MASSES 94Ru, 94mRu; measured mass excesses of the isomer and the ground state of 94Ru using isochronous mass spectrometry (IMS) at Heavy Ion Research Facility (HIRFL), Lanzhou, and compared with AME-2016.

doi: 10.1103/PhysRevC.96.031303
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2017ZH12      Phys.Lett. B 767, 20 (2017)

P.Zhang, X.Xu, P.Shuai, R.J.Chen, X.L.Yan, Y.H.Zhang, M.Wang, Yu.A.Litvinov, K.Blaum, H.S.Xu, T.Bao, X.C.Chen, H.Chen, C.Y.Fu, J.J.He, S.Kubono, Y.H.Lam, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, J.C.Yang, Y.J.Yuan, Q.Zeng, X.Zhou, X.H.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

High-precision QEC values of superallowed 0+ → 0+β-emitters 46Cr, 50Fe and 54Ni

ATOMIC MASSES 42Ti, 46Cr, 48Mn, 50Fe, 54Ni; measured the revolution time spectrum; deduced precision mass excesses, corrected log ft values. Comparison with AME12 evaluated data.

doi: 10.1016/j.physletb.2017.01.039
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2016XU10      Phys.Rev.Lett. 117, 182503 (2016)

X.Xu, P.Zhang, P.Shuai, R.J.Chen, X.L.Yan, Y.H.Zhang, M.Wang, Yu.A.Litvinov, H.S.Xu, T.Bao, X.C.Chen, H.Chen, C.Y.Fu, S.Kubono, Y.H.Lam, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, J.C.Yang, Y.J.Yuan, Q.Zeng, X.Zhou, X.H.Zhou, W.L.Zhan, S.Litvinov, K.Blaum, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, A.C.Dai, F.R.Xu

Identification of the Lowest T=2, Jπ = 0+ Isobaric Analog State in 52Co and Its Impact on the Understanding of β-Decay Properties of 52Ni

NUCLEAR REACTIONS Be(58Ni, X)52Co, E=467.91 MeV/nucleon; measured reaction products, TOF; deduced atomic masses, energy of T=2 isobaric analog state, level scheme. Comparison with shell model calculations using GXPF1J interaction.

doi: 10.1103/PhysRevLett.117.182503
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2015MA54      Phys.Rev. C 92, 041302 (2015), Pub.Note Phys.Rev. C 92, 044903 (2015)

A.Matta, D.Beaumel, H.Otsu, V.Lapoux, N.K.Timofeyuk, N.Aoi, M.Assie, H.Baba, S.Boissinot, R.J.Chen, F.Delaunay, N.de Sereville, S.Franchoo, P.Gangnant, J.Gibelin, F.Hammache, Ch.Houarner, N.Imai, N.Kobayashi, T.Kubo, Y.Kondo, Y.Kawada, L.H.Khiem, M.Kurata-Nishimura, E.A.Kuzmin, J.Lee, J.F.Libin, T.Motobayashi, T.Nakamura, L.Nalpas, E.Yu.Nikolskii, A.Obertelli, E.C.Pollacco, E.Rindel, Ph.Rosier, F.Saillant, T.Sako, H.Sakurai, A.M.Sanchez-Benitez, J-A.Scarpaci, I.Stefan, D.Suzuki, K.Takahashi, M.Takechi, S.Takeuchi, H.Wang, R.Wolski, K.Yoneda

New findings on structure and production of 10He from 11Li with the (d, 3He) reaction

NUCLEAR REACTIONS 2H(11Li, 3He), (9Li, 3He), E=50 MeV/nucleon, [secondary 9,11Li beams from 9Be(18O, X), E=100 MeV/nucleon primary reaction]; measured 3He spectra, σ(θ) using four MUST2 Si telescopes at RIBF-RIKEN. 8,10He; deduced missing mass spectra, levels, resonances, J, π, widths, spectroscopic factors, 8He+n+n and 6He+4n decay modes of unbound states of 10He. 10He, 11Li; deduced importance of core excitations in the ground state. DWBA analysis, shell-model calculations, and comparison with previous experimental data.

doi: 10.1103/PhysRevC.92.041302
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2015XU14      Chin.Phys.C 39, 104001 (2015)

X.Xu, M.Wang, Y.-H.Zhang, H.-S.Xu, P.Shuai, X.-L.Tu, Y.A.Litvinov, X.-H.Zhou, B.-H.Sun, Y.-J.Yuan, J.-W.Xia, J.-C.Yang, K.Blaum, R.-J.Chen, X.-C.Chen, C.-Y.Fu, Z.Ge, Z.-G.Hu, W.-J.Huang, D.-W.Liu, Y.-H.Lam, X.-W.Ma, R.-S.Mao, T.Uesaka, G.-Q.Xiao, Y.-M.Xing, T.Yamaguchi, Y.Yamaguchi, Q.Zeng, X.-L.Yan, H.-W.Zhao, T.-C.Zhao, W.Zhang, W.-L.Zhan

Direct mass measurements of neutron-rich 86Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

ATOMIC MASSES 23F, 25Ne, 33Al, 36Si, 38P, 42,43Cl, 52,53,54Sc, 54,56Ti, 57,58V, 61Cr, 69Co; measured corrected revolution time spectrum; deduced mass excess values. Comparison with AME12 mass evaluation.

doi: 10.1088/1674-1137/39/10/104001
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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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2012CA05      Phys.Lett. B 707, 46 (2012)

Z.X.Cao, Y.L.Ye, J.Xiao, L.H.Lv, D.X.Jiang, T.Zheng, H.Hua, Z.H.Li, X.Q.Li, Y.C.Ge, J.L.Lou, R.Qiao, Q.T.Li, H.B.You, R.J.Chen, D.Y.Pang, H.Sakurai, H.Otsu, M.Nishimura, S.Sakaguchi, H.Baba, Y.Togano, K.Yoneda, C.Li, S.Wang, H.Wang, K.A.Li, T.Nakamura, Y.Nakayama, Y.Kondo, S.Deguchi, Y.Satou, K.Tshoo

Recoil proton tagged knockout reaction for 8He

NUCLEAR REACTIONS 9Be(13C, X)8He, E=115 MeV/nucleon; C, H(8He, p), E=82.3 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ(θ), σ(E), neutron spectroscopic factor. Comparison with ab-initio Green's function Monte-Carlo calculations.

doi: 10.1016/j.physletb.2011.12.009
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2012LA23      Prog.Theor.Phys.(Kyoto), Suppl. 196, 111 (2012)

V.Lapoux, S.Boissinot, H.Otsu, H.Baba, R.J.Chen, A.Matta, E.Pollacco, Y.Blumenfeld, F.Flavigny, S.Franchoo, N.Fukuda, P.Gangnant, F.Hammache, Ch.Houarner, N.Inabe, D.Kameda, J.F.Libin, C.Louchart, M.Matsushita, T.Motobayashi, L.Nalpas, E.Yu.Nikolskii, M.Nishimura, A.Obertelli, T.Onishi, E.Rindel, Ph.Rosier, H.Sakurai, F.Saillant, M.Takechi, S.Takeuchi, Y.Togano, K.Yoneda, A.Yoshida, K.Yoshida, for the RIBF57 Collaboration

Spectroscopy of the Unbound States of the Drip-Line Nucleus 24O

NUCLEAR REACTIONS 1H(24O, p'), E=262.5 MeV/nucleon; 1H(24O, p), (23O, p), (22O, p), E≈262.5 MeV/nucleon; measured reaction products, Ep, Ip. 24O; deduced σ(θ), level energies, J, π. Comparison with theoretical calculations.

doi: 10.1143/PTPS.196.111
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2012LV01      J.Phys.(London) G39, 065102 (2012)

L.H.Lv, J.Xiao, Y.L.Ye, Z.X.Cao, D.X.Jiang, T.Zheng, H.Hua, Z.H.Li, X.Q.Li, Y.C.Ge, J.L.Lou, R.Qiao, Q.T.Li, H.B.You, R.J.Chen, H.Sakurai, H.Otsu, M.Nishimura, S.Sakaguchi, H.Baba, Y.Togano, K.Yoneda, C.Li, S.Wang, H.Wang, K.A.Li, T.Nakamura, Y.Nakayama, Y.Kondo, S.Deguchi, Y.Satou, K.Tshoo

Knockout reaction induced by 6He at 82.3 MeV/u

NUCLEAR REACTIONS H, C(6He, X), E=82.3 MeV/nucleon; measured reaction products, En, In, Eα, Iα. 5He; deduced σ(E), p3/2 resonant state, resonance parameters.

doi: 10.1088/0954-3899/39/6/065102
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2012TA02      Phys.Lett. B 707, 357 (2012)

M.Takechi, T.Ohtsubo, M.Fukuda, D.Nishimura, T.Kuboki, T.Suzuki, T.Yamaguchi, A.Ozawa, T.Moriguchi, H.Ooishi, D.Nagae, H.Suzuki, S.Suzuki, T.Izumikawa, T.Sumikama, M.Ishihara, H.Geissel, N.Aoi, R.-J.Chen, D.-Q.Fang, N.Fukuda, I.Hachiuma, N.Inabe, Y.Ishibashi, Y.Ito, D.Kameda, T.Kubo, K.Kusaka, M.Lantz, Y.-G.Ma, K.Matsuta, M.Mihara, Y.Miyashita, S.Momota, K.Namihira, M.Nagashima, Y.Ohkuma, T.Ohnishi, M.Ohtake, K.Ogawa, H.Sakurai, Y.Shimbara, T.Suda, H.Takeda, S.Takeuchi, K.Tanaka, R.Watanabe, M.Winkler, Y.Yanagisawa, Y.Yasuda, K.Yoshinaga, A.Yoshida, K.Yoshida

Interaction cross sections for Ne isotopes towards the island of inversion and halo structures of 29Ne and 31Ne

NUCLEAR REACTIONS Be(48Ca, X)29Ne/31Ne, E=345 MeV/nucleon; C(29Ne, X), (31Ne, X), E=260 MeV/nucleon; measured reaction products; deduced σ, Nilsson orbitals, halo structures. Comparison with Glauber-type calculations.

doi: 10.1016/j.physletb.2011.12.028
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2012XI03      Chin.Phys.Lett. 29, 082501 (2012)

J.Xiao, Y.-L.Ye, Z.-X.Cao, D.-X.Jiang, T.Zheng, H.Hua, Z.-H.Li, X.-Q.Li, Y.-C.Ge, J.-L.Lou, D.-Y.Pang, L.-H.Lv, Q.-T.Li, R.Qiao, H.-B.You, R.-J.Chen, H.Sakurai, H.Otsu, M.Nishimura, S.Sakaguchi, H.Baba, Y.Togano, K.Yoneda, C.Li, S.Wang, H.Wang, K.-A.Li, Y.Nakayama, Y.Kondo, S.Deguchi, Y.Satou, K.H.Tshoo

New Measurements for 8He Excited States

NUCLEAR REACTIONS H, C(8He, 2n)6He, E=82.3 MeV/nucleon; measured reaction products, En, In. 8He; deduced relative energy spectrum, resonances, resonant peaks, σ. Borromean nucleus, comparison with available data.

doi: 10.1088/0256-307X/29/8/082501
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2011LO07      Phys.Rev. C 83, 034612 (2011)

J.L.Lou, Y.L.Ye, D.Y.Pang, Z.X.Cao, D.X.Jiang, T.Zheng, H.Hua, Z.H.Li, X.Q.Li, Y.C.Ge, L.H.Lv, J.Xiao, Q.T.Li, R.Qiao, H.B.You, R.J.Chen, H.Sakurai, H.Otsu, M.Nishimura, S.Sakaguchi, H.Baba, Y.Togano, K.Yoneda, C.Li, S.Wang, H.Wang, K.A.Li, T.Nakamura, Y.Nakayama, Y.Kondo, S.Deguchi, Y.Satou, K.Tshoo

Quasielastic scattering of 6He from 12C at 82.3 MeV/nucleon

NUCLEAR REACTIONS 12C(6He, 6He'), [secondary 6He beam from 9Be(13C, X), E=115 MeV/nucleon primary reaction], E=82.3 MeV/nucleon; measured charged-particle spectra, σ(θ) of scattered 6He, σ/σ(Rutherford). Comparisons with optical model (OM) and continuum discretized coupling channel (CDCC) model calculations.

doi: 10.1103/PhysRevC.83.034612
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2010FA09      Chin.Phys.Lett. 27, 092501 (2010)

J.-Q.Faisal, J.-L.Lou, Y.-L.Ye, Z.-X.Cao, D.-X.Jiang, T.Zheng, H.Hua, Z.-H.Li, X.-Q.Li, Y.-C.Ge, D.-Y.Pang, Q.-T.Li, J.Xiao, L.-H.Lv, R.Qiao, H.-B.You, R.-J.Chen, F.Lu, H.Sakurai, H.Otsu, M.Nishimura, S.Sakaguchi, H.Baba, Y.Togano, K.Yoneda, C.Li, S.Wang, H.Wang, K.-A.Li, T.Nakamura, Y.Nakayama, Y.Kondo, S.Deguchi, Y.Satou, K.H.Tshoo

Elastic Scattering of 6He + p at 82.3 MeV/nucleon

NUCLEAR REACTIONS 1H(6He, 6He), E=82.3 MeV/nucleon; measured reaction products. 6He; deduced σ(θ). Comparison with optical model CH89 or KD02 global potentials.

doi: 10.1088/0256-307X/27/9/092501
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