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1.
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Spectroscopy of $^{187}$Tl: shape coexistence
/ Guo, C Y (Peking U., SKLNPT) ; Zhang, W Q (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Huang, H (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Zhang, S Q (Peking U., SKLNPT) ; Li, Z H (Peking U., SKLNPT) ; Liu, Z (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Hua, H (Peking U., SKLNPT) ; Luo, D W (Peking U., SKLNPT) ; Wu, H Y (Peking U., SKLNPT ; Beijing, Inst. Atomic Energy) ; Andreyev, A N (York U., England ; Jefferson Lab ; JAEA, Ibaraki) et al.
The prompt and delayed $\gamma $-ray spectra of $^{187}$Tl was studied via the $^{142}$Nd($^{50}$Cr, 3p2n)$^{187}$Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of $^{187}$Tl was established. [...]
2024 - 10 p.
- Published in : Eur. Phys. J. A 60 (2024) 165
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2.
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Evolution of the nuclear spin-orbit splitting explored via the $^{32}$Si($d$,$p$)$^{33}$Si reaction using SOLARIS
/ Chen, J. (SUSTech, Shenzhen ; Argonne) ; Kay, B.P. (Argonne) ; Hoffman, C.R. (Argonne) ; Tang, T.L. (Argonne) ; Tolstukhin, I.A. (Argonne) ; Bazin, D. (Michigan State U.) ; Lubna, R.S. (Michigan State U.) ; Ayyad, Y. (Santiago de Compostela U., IGFAE) ; Beceiro-Novo, S. (Michigan State U.) ; Coombes, B.J. (Australian Natl. U., Canberra) et al.
The spin-orbit splitting between neutron 1$p$ orbitals at $^{33}$Si has been deduced using the single-neutron-adding ($d$,$p$) reaction in inverse kinematics with a beam of $^{32}$Si, a long-lived radioisotope. Reaction products were analyzed by the newly implemented SOLARIS spectrometer at the reaccelerated-beam facility at the National Superconducting Cyclotron Laboratory. [...]
arXiv:2404.05434.-
2024-04-29 - 10 p.
- Published in : Phys. Lett. B 853 (2024) 138678
Fulltext: 2404.05434 - PDF; Publication - PDF;
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3.
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Direct Determination of Fission-Barrier Heights Using Light-Ion Transfer in Inverse Kinematics
/ Bennett, S.A. (Manchester U.) ; Garrett, K. (Manchester U.) ; Sharp, D.K. (Manchester U.) ; Freeman, S.J. (Manchester U. ; CERN) ; Smith, A.G. (Manchester U.) ; Wright, T.J. (Manchester U.) ; Kay, B.P. (Argonne, PHY) ; Tang, T.L. (Argonne, PHY) ; Tolstukhin, I.A. (Argonne, PHY) ; Ayyad, Y. (Santiago de Compostela U., IGFAE) et al.
We demonstrate a new technique for obtaining fission data for nuclei away from $\beta$-stability. These types of data are pertinent to the astrophysical \textit{r-}process, crucial to a complete understanding of the origin of the heavy elements, and for developing a predictive model of fission. [...]
arXiv:2304.10281.-
2023-05-19 - 6 p.
- Published in : Phys. Rev. Lett. 130 (2023) 202501
Fulltext: Publication - PDF; 2304.10281 - PDF;
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4.
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First observation of a shape isomer and a low-lying strongly-coupled prolate band in neutron-deficient semi-magic $^{187}$Pb
/ Zhang, W Q (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Andreyev, A N (York U., England ; JAERI, Tokai) ; Liu, Z (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Seweryniak, D (Argonne, PHY) ; Huang, H (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Li, Z H (Peking U., SKLNPT) ; Li, J G (Lanzhou, Inst. Modern Phys. ; Peking U., SKLNPT) ; Guo, C Y (Peking U., SKLNPT) ; Doherty, D T (Surrey U.) ; Barzakh, A E (St. Petersburg, INP) et al.
Prompt and delayed γ-ray spectroscopy of the neutron-deficient, semi-magic isotope 187Pb has been performed using the recoil-decay and isomer-decay tagging techniques at the Argonne Gas-Filled Analyzer. A new 5.15(15)-μs isomeric state at only 308 keV above the spherical 3/2− ground state is identified and classified as a shape isomer. [...]
2022 - 7 p.
- Published in : Phys. Lett. B 829 (2022) 137129
Publication: PDF;
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5.
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Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in $^{217,218,219}\mathrm{At}$ revealed by in-source laser spectroscopy
/ Barzakh, A E (St. Petersburg, INP) ; Cubiss, J G (York U., England) ; Andreyev, A N (York U., England ; JAEA, Ibaraki ; CERN) ; Seliverstov, M D (St. Petersburg, INP ; York U., England) ; Andel, B (Comenius U.) ; Antalic, S (Comenius U.) ; Ascher, P (Heidelberg, Max Planck Inst.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Beck, D (Darmstadt, GSI) ; Bieroń, J (Jagiellonian U.) et al.
Hyperfine-structure parameters and isotope shifts for the 795-nm atomic transitions in $^{217,218,219}$At have been measured at CERN-ISOLDE, using the in-source resonance-ionization spectroscopy technique. Magnetic dipole and electric quadrupole moments, and changes in the nuclear mean-square charge radii, have been deduced. [...]
2019 - 9 p.
- Published in : Phys. Rev. C 99 (2019) 054317
Article from SCOAP3: PDF;
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6.
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7.
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Charge radii and electromagnetic moments of $^{195–211}$At
/ Cubiss, J G (York U., England) ; Barzakh, A E (St. Petersburg, INP) ; Seliverstov, M D (York U., England ; St. Petersburg, INP) ; Andreyev, A N (York U., England ; JAEA, Ibaraki ; Paisley U. ; CERN) ; Andel, B (Comenius U.) ; Antalic, S (Comenius U.) ; Ascher, P (Heidelberg, Max Planck Inst.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Beck, D (Darmstadt, GSI) ; Bieroń, J (Jagiellonian U.) et al.
Hyperfine-structure parameters and isotope shifts of At195–211 have been measured for the first time at CERN-ISOLDE, using the in-source resonance-ionization spectroscopy method. The hyperfine structures of isotopes were recorded using a triad of experimental techniques for monitoring the photo-ion current. [...]
2018 - 19 p.
- Published in : Phys. Rev. C 97 (2018) 054327
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8.
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$\beta$-delayed fission of $^{230}$Am
/ Wilson, G L (York U., England ; Massachusetts U., Lowell) ; Takeyama, M (Nishina Ctr., RIKEN ; Yamagata U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki ; CERN) ; Andel, B (Comenius U.) ; Antalic, S (Comenius U.) ; Catford, W N (Surrey U.) ; Ghys, L (Leuven U. ; SCK-CEN, Mol) ; Haba, H (Nishina Ctr., RIKEN) ; Heßberger, F P (Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Huang, M (Nishina Ctr., RIKEN) et al.
The exotic decay process of β-delayed fission (βDF) has been studied in the neutron-deficient isotope Am230. The Am230 nuclei were produced in the complete fusion reaction Pb207(Al27,4n)Am230 and separated by using the GARIS gas-filled recoil ion separator. [...]
2017 - 7 p.
- Published in : Phys. Rev. C 96 (2017) 044315
Fulltext: PDF;
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9.
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In-source laser spectroscopy of mercury isotopes
/ Gaffney, Liam Paul (KU Leuven) ; Day Goodacre, Thomas (CERN-ISOLDE ; The University of Manchester) ; Andreyev, Andrei (The University of York) ; Seliverstov, Maxim (PNPI, Gatchina ; CERN-ISOLDE) ; Althubiti, N (The University of Manchester) ; Andel, B (Comenius University, Bratislava) ; Antalic, S (Comenius University, Bratislava) ; Atanasov, D (Max-Planck-Institut für Kernphysik, Heidelberg) ; Barzakh, A E (PNPI, Gatchina) ; Blaum, K (Max-Planck-Institut für Kernphysik, Heidelberg) et al.
CERN-INTC-2014-060 ; INTC-P-424.
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2014.
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