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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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Time Projection Chamber for GADGET II
/ Mahajan, Ruchi (Michigan State U., East Lansing (main)) ; Wheeler, T. (Michigan State U., East Lansing (main) ; Michigan State U.) ; Pollacco, E. (IRFU, Saclay) ; Wrede, C. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Adams, A. (Michigan State U., East Lansing (main) ; Michigan State U.) ; Alvarez-Pol, H. (Santiago de Compostela U., IGFAE) ; Andalib, A. (Michigan State U., East Lansing (main)) ; Anthony, A. (High Point U.) ; Ayyad, Y. (Santiago de Compostela U., IGFAE) ; Bazin, D. (Michigan State U., East Lansing (main) ; Michigan State U.) et al.
Background: The established GADGET detection system, designed for measuring weak, low-energy $\beta$-delayed proton decays, features a gaseous Proton Detector with MICROMEGAS readout for calorimetric particle detection, surrounded by a Segmented Germanium Array for high-resolution prompt $\gamma$-ray detection. Purpose: To upgrade GADGET's Proton Detector to operate as a compact Time Projection Chamber (TPC) for the detection, 3D imaging and identification of low-energy $\beta$-delayed single- and multi-particle emissions mainly of interest to astrophysical studies. [...]
arXiv:2401.01904.-
2024-09-12 - 13 p.
- Published in : Phys. Rev. C 110 (2024) 035807
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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
Fulltext: PDF;
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Probing the excited halo in 10Be using low-energy one neutron transfer reaction
/ Chen, Jie (Argonne National Laboratory) ; Obertelli, Alexandra (Technische Universit¨at Darmstadt) ; Capel, Pierre (Johannes Gutenberg-Universit¨at at Mainz) ; Durant, Victoria (Johannes Gutenberg-Universit¨at at Mainz) ; Ayyad, Yassid (Instituto de Estructura de la Materia, CSIC) ; Browne, Frank (ISOLDE, CERN,) ; Gernhaeuser, Roman (Technical University of Munich) ; Hoffman, Calem (Argonne National Laboratory) ; Kr ̈oll, Thorsten (Technische Universit¨at Darmstadt) ; Liu, Weiping (Southern University of Science and Technology) et al.
CERN-INTC-2023-002 ; INTC-P-648.
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2023.
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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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Determination of the $\alpha$ decay width of a near-threshold proton-emitting resonance in $^{11}$B
/ Ayyad, Yassid (IGFAE) ; Mittig, Wolfgang (FRIB) ; Olaizola, Bruno (CERN) ; Alvarez-Pol, Hector (IGFAE) ; Bazin, Daniel (FRIB) ; Beceiro-Novo, Saul (MSU) ; Caamaño, Manuel (FRIB) ; Chen, Jie (ANL) ; Fernandez-Dominguez, Beatriz (IGFAE) ; Freeman, Sean (University of Manchester) et al.
CERN-INTC-2022-024 ; INTC-P-632.
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2022.
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Recoil imaging for dark matter, neutrinos, and physics beyond the Standard Model
/ O'Hare, C.A.J. (Sydney U. ; ARC, CoEPP, Australia) ; Loomba, D. (New Mexico U.) ; Altenmuller, K. (U. Zaragoza (main)) ; Alvarez-Pol, H. (Santiago de Compostela U., IGFAE) ; Amaro, F.D. (LIP, Coimbra) ; Araujo, H.M. (Imperial Coll., London) ; Aristizabal Sierra, D. (Santa Maria U., Valparaiso ; Liege U.) ; Asaadi, J. (Texas U., Arlington) ; Attie, D. (IRFU, Saclay) ; Aune, S. (IRFU, Saclay) et al.
Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. [...]
arXiv:2203.05914 ; FERMILAB-CONF-22-334-ND.
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