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SUMMARY:Transfer Reactions with 16C as a Probe of Neutron-Rich Carbon Stru
 cture
DTSTART;VALUE=DATE-TIME:20251119T133000Z
DTEND;VALUE=DATE-TIME:20251119T134500Z
DTSTAMP;VALUE=DATE-TIME:20260420T161255Z
UID:indico-contribution-28997@indico.ific.uv.es
DESCRIPTION:Speakers: Georgina Xifra Goya (USC (Universidade de Santiago d
 e Compostela))\nCarbon isotopes provide a rich testing ground for the evol
 ution of shell structure and halo phenomena in light neutron-rich nuclei. 
 In particular\, $^{15}\\mathrm{C}$ [1] is a well-known one-neutron halo ca
 ndidate\, with the valence neutron weakly bound ($S_n \\approx 1.2$  MeV) 
 in a $2s_{1/2}$  orbital. \n\nIts first excited state at 0.74 MeV has a do
 minant single-particle configuration with a neutron in the $1d_{5/2}$ orbi
 tal and a lifetime of 2.61 ns [2].  The transition between these states is
  expected to involve weak core polarization due to the inert $^{14}\\mathr
 m{C}$ core\, which may be further reduced by the spatial decoupling of the
  halo neutron. Understanding how the halo in $^{15}\\mathrm{C}$ impacts co
 re polarization is directly relevant for constraining the quadrupole momen
 ts of $^{16}\\mathrm{C}$ [3]. \n\nTo address these questions\, we studied 
 the one-neutron transfer $^{16}\\mathrm{C}(p\,d)^{15}\\mathrm{C}$\, the tw
 o-neutron transfer $^{16}\\mathrm{C}(p\,t)^{14}\\mathrm{C}$\, and the deut
 eron-induced transfer $^{16}\\mathrm{C}(d\,t)^{15}\\mathrm{C}$. These comp
 lementary reactions provide sensitivity to single-particle and pairing cor
 relations in neutron-rich carbon isotopes and serve as benchmarks for theo
 retical models of transfer reactions with exotic beams. \n\nThe experiment
  was performed in 2023 at the Argonne Tandem Linac Accelerator System [4] 
 (ATLAS) using the Active Target Time Projection Chamber (AT-TPC) [5] and H
 ELIOS solenoidal spectrometer [6\,7].  A primary $^{18}\\mathrm{O}$ beam w
 ith an energy of $222.72 \\pm 0.43$ MeV was degraded to produce a $^{16}\\
 mathrm{C}$ secondary beam\, which was subsequently used to study these tra
 nsfer channels. \n\n_This work has received financial support from the Xun
 ta de Galicia (CIGUS Network of Research Centres) and the European Union_.
  _This material is based upon work supported by the U.S. Department of Ene
 rgy\, Office of Science\, Office of Nuclear Physics\, under Contracts No. 
 DE-AC02-06CH11357. This research used resources of ANL’s ATLAS facility\
 , which is a DOE Office of Science User Facility._\n_\n\n\n\n\nReferences:
 \n[1] U. Datta Pramanik\, T. Aumann\, K. Boretzky and et al.\, Phys. Lett.
  B 551\, 63 (2003).\n[2] D. E. Alburger and D. J. Millener\, Phys. Rev. C 
 20\, 1891 (1979).\n[3] J. Chen et al.\, Physical Review C 106.6 (2022): 
 064312.\n[4] C. Hoffman\, T. Tang\, M. Avila\, Y. Ayyad\, K. Brown\, J. Ch
 en\, K. Chipps\, H. Jayatissa\, B. Kay\, C. MüllerGatermann\, H. Ong\, J.
  Song\, and G. Wilson\, Nucl. Instr. Meth. Phys. Res. Sect. A 1032\, 16661
 2 (2022).\n[5] J. Bradt\,  D. Bazin\, F. Abu-Nimeh\, T. Ahn\, Yassid Ayyad
 \, S. Beceiro Novo\, L. Carpenter et al.  Nucl. Instr. Meth. Phys. Res. S
 ect. A  875 (2017): 65-79.\n[6] ] A. Wuosmaa\, J. Schiffer\, B. Back\, C.
  Lister\, and K. Rehm\, Nucl. Instr. Meth. Phys. Res. Sect. A 580\, 1290 (
 2007).\n[7] J. Lighthall\, B. Back\, S. Baker\, S. Freeman\, H. Lee\, B. K
 ay\, S. Marley\, K. Rehm\, J. Rohrer\, J. Schiffer\, D. Shetty\, A. Vann\,
  J. Winkelbauer\, and A. Wuosmaa\, Nucl. Instr. Meth. Phys. Res. Sec. A 62
 2\, 97 (2010).\n\nhttps://indico.ific.uv.es/event/8035/contributions/28997
 /
LOCATION:
URL:https://indico.ific.uv.es/event/8035/contributions/28997/
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