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NSR database version of April 27, 2024.

Search: Author = S.X.Yan

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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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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, m}Ra 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, T_1/2 of decays of ²⁰⁶Ra and ^207mRa, excitation energy of the isomer; deduced α-reduced width, configuration. Systematics of spins, parities, Eα, T_1/2, α-branching ratios, reduced α widths for ^{203,203m,205,205m,207,207m}Ra. ^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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