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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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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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Probing the quadrupole transition strength of $^{15}$C via deuteron inelastic scattering
/ Chen, J. (Argonne) ; Kay, B.P. (Argonne) ; Tang, T.L. (Argonne) ; Tolstukhin, I.A. (Argonne) ; Hoffman, C.R. (Argonne) ; Li, H. (Lanzhou, Inst. Modern Phys.) ; Yin, P. (Lanzhou, Inst. Modern Phys.) ; Zhao, X. (Lanzhou, Inst. Modern Phys.) ; Maris, P. (Iowa State U.) ; Vary, J.P. (Ames Lab) et al.
Deuteron elastic scattering from 15C and inelastic scattering reactions to the first excited state of 15C were studied using a radioactive beam of 15C in inverse kinematics. The scattered deuterons were measured using HELIOS. [...]
arXiv:2209.12252.-
2022-12-12 - 9 p.
- Published in : Phys. Rev. C 106 (2022) 064312
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Evidence of a near-threshold resonance in $^{11}$B relevant to the $\beta$-delayed proton emission of $^{11}$Be
/ Ayyad, Y. (Santiago de Compostela U., IGFAE ; Michigan State U., East Lansing (main)) ; Mittig, W. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Tang, T. (Michigan State U., East Lansing (main)) ; Olaizola, B. (CERN) ; Potel, G. (LLNL, Livermore) ; Rijal, N. (Michigan State U., East Lansing (main)) ; Watwood, N. (Michigan State U., East Lansing (main)) ; Alvarez-Pol, H. (Santiago de Compostela U., IGFAE) ; Bazin, D. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Caamaño, M. (Santiago de Compostela U., IGFAE) et al.
A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J$^{\pi}$ = 1/2$^{+}$ and $\Gamma_{p}$ = 4.4 keV) was directly observed in $^{11}$B via proton resonance scattering. This resonance was previously inferred in the $\beta$-delayed proton emission of the neutron halo nucleus $^{11}$Be. [...]
arXiv:2205.04973.-
2022-06-28 - 6 p.
- Published in : Phys. Rev. Lett. 129 (2022) 012501
Fulltext: 2205.04973 - PDF; PhysRevLett.129.012501 - PDF;
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Evolution of single-particle structure near the $N=20$ island of inversion
/ MacGregor, P T (Manchester U.) ; Sharp, D K (Manchester U.) ; Freeman, S J (Manchester U.) ; Hoffman, C R (Argonne, PHY) ; Kay, B P (Argonne, PHY) ; Tang, T L (Argonne, PHY) ; Gaffney, L P (Liverpool U. ; CERN) ; Baader, E F (CERN) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Butler, P A (Liverpool U.) et al.
The single-particle properties of $^{29}$Mg have been investigated via a measurement of the $^{28}$Mg(d,p) 29Mg reaction, in inverse kinematics, using the ISOLDE Solenoidal Spectrometer. The negative-parity intruder states from the f p shell have been identified and used to benchmark modern shell-model calculations. [...]
2021 - 7 p.
- Published in : Phys. Rev. C 104 (2021) L051301
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The $d$($^{30}$Mg,$p$)$^{31}$Mg reaction: Probing single-particle behaviour within the “island of inversion”
/ Sharp, DK (The University of Manchester) ; Freeman, SJ (The University of Manchester) ; Butler, PA (University of Liverpool) ; Catford, WN (University of Surrey) ; Ceulemans, A (KU Leuven) ; Gaffney, LP (University of Liverpool) ; Hoffman, CR (Argonne National Laboratory) ; Janssens, RVF (University of North Carolina and Duke University) ; Kay, BP (Argonne National Laboratory) ; Kitamura, N (The University of Tokyo) et al.
CERN-INTC-2020-060 ; INTC-P-576.
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The ($d$,$p$) reaction on $^{11}$Be: Bringing clarity to our understanding of the structure of $^{12}$Be
/ Chen, J (FRIB/NSCL Laboratory) ; Sharp, DK (The University of Manchester) ; Kay, BP (Argonne National Laboratory) ; Hoffman, CR (Argonne National Laboratory) ; Tang, TL (Argonne National Laboratory) ; Ayyad, Y (FRIB/NSCL Laboratory) ; Bazin, D (FRIB/NSCL Laboratory) ; Borge, MJG (Instituo de Estructura de la Materia, CSIC and ISOLDE, CERN) ; Butler, PA (University of Liverpool) ; Ceulemans, A (KU Leuven) et al.
CERN-INTC-2020-057 ; INTC-P-573.
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2020.
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First Exploration of Neutron Shell Structure Below Lead and Beyond $\boldsymbol{N=126}$
/ Tang, T.L. (Argonne) ; Kay, B.P. (Argonne) ; Hoffman, C.R. (Argonne) ; Schiffer, J.P. (Argonne) ; Sharp, D.K. (Manchester U.) ; Gaffney, L.P. (CERN) ; Freeman, S.J. (Manchester U.) ; Mumpower, M.R. ; Arokiaraj, A. ; Baader, E.F. (CERN) et al.
The nuclei below lead but with more than 126 neutrons are crucial to an understanding of the astrophysical $r$-process in producing nuclei heavier than $A\sim190$. Despite their importance, the structure and properties of these nuclei remain experimentally untested as they are difficult to produce in nuclear reactions with stable beams. [...]
arXiv:2001.00976; LA-UR-19-30930.-
2020-02-14 - 7 p.
- Published in : Phys. Rev. Lett. 124 (2020) 062502
Fulltext: PDF; Fulltext from Publisher: PDF;
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