Orateur
Description
Proton-removal reactions along the Be-Li chain close to the drip-line have been investigated with the aim of establishing the role of the Geometrical Mismatch Factor (GMF) and NN effects [1] in lowering the cross sections, as observed previously in He-Li nuclei [2].
The experiment was performed at GANIL using 10Be and 12Be beams at 30 AMeV impinging a CD2 target, with an intensity of 3 · 10⁵ pps and 2 · 10⁴ pps respectively. The angle and energy of the light recoil were detected by using 8 MUST2 telescopes [3], and a zero-degree detector consisting of an ionization chamber and a plastic scintillator that permitted the identification of the heavy recoil.
The missing-mass technique was used to reconstruct the excitation energy spectrum, from which cross sections can be extracted. Particular attention has been paid to the 12Be(d, 3He)11Li transfer reaction, but also to the 12Be(d, t)11Be channel as it enables a further constrain to the GMF of 12Be [4].
Preliminary results of the excitation energy for 11Li and 11Be will be presented and an overview of the status of the analysis for 10Be reactions will be depicted
References
[1] N. K. Timofeyuk, J. Phys. G Nucl. Partic. 41, 094008 (2014).
[2] A. Matta et al., Phys. Rev. C 92, 041302 (2015).
[3] E. Pollacco et al., Eur. Phys. J. A 25, 287–288 (2005).
[4] F. Nunes et al., Nucl. Phys. A 609, 43–73 (1996)
