Speaker
Description
The evolution of the N=16 shell gap in neutron-rich oxygen isotopes has been studied extensively over the past years [1, 2, 3, 4]. In neutron-rich carbon isotopes, the N=14 shell gap is shown to collapse [5, 6]however no experimental information on the N=16 shell gap is known. Unbound states in 17C have been populated using one-neutron transfer reaction d(16C,p)17C at a beam energy of 17.2 AMeV [6] with the TIARA Silicon array at GANIL. The excitation energy of the neutron unbound states in 17C was reconstructed using the information from the energy and angle of the proton ejectile. Some resonances have been found and their neutron-decay widths were deduced. The results are compatible with a large strength of the 0d3/2 orbital involved in the development of the N=16 shell gap. In this talk, I will present the preliminary results and discuss them in the light of recent shell model calculations.
References:
[1] O. Sorlin and M.G. Porquet, Prog. Part. Nucl. Phys. 61 (2008) 602.
[2] T. Otsuka et al., Rev. Mod. Phys. 92 (2020) 015002.
[3] Z. Elekes et al., Phys. Rev. Lett. 98 (2007) 102502.
[4] C. R. Hoffman et al., Phys. Rev. Lett. 100 (2008) 152502.
[5] M. Stanoiu et al., Phys. Rev. C 78 (2008) 034315.
[6] X. Pereira-López et al. Physics Letters B, 811, (2020), 135939
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