Abstract
A halo nucleus is built from a core and at least one weakly bound neutron or proton. To understand this unique cluster structure, lots of efforts have been undertaken. During the past decades, the (d, p) reaction has been widely used in experiments and has become an important tool for extracting single-particle properties of nuclei. In this work, our goal is to obtain the Asymptotic Normalization Coefficient (ANC) of the halo nuclei 11Be using the ADWA method. We perform the analysis for the 10Be(d, p)11Be stripping reaction at Ed=21.4, 18, 15, and 12MeV for the ground state and first excited state of the composite nucleus 11Be. The experimental measurement was carried out at Oak Ridge National Laboratory by Schmitt et al. [1] The sensitivity of the calculations to the optical potential choice is also checked. Overall, the transfer process becomes more peripheral at lower energies and forward angles. Investigation in this area is the best way to extract a reliable ANC from the experimental data. For the ground state of 11Be, the ANC obtained using our method shows perfect agreement with the one obtained by Ab initio calculations (CAb=0.786 fm−1/2) [2].
Highlights
Halo nuclei [3] constitute a unique class of exotic systems, which are mostly found in the neutronrich region of the nuclear chart and exhibit a much larger matter radius than the stable nuclei do
An analysis of the theoretical results of Schmitt et al.’s experiment has been performed with the aim to extract the Asymptotic Normalization Coefficient (ANC) of the halo nucleus 11Be using the ADWA method in this paper
By comparing between theoretical results at four energies, it is noticed that transfer reaction becomes more peripheral at lower energies and forward angles
Summary
Halo nuclei [3] constitute a unique class of exotic systems, which are mostly found in the neutronrich region of the nuclear chart and exhibit a much larger matter radius than the stable nuclei do. The halo is a threshold effect arising for some weakly bound nuclei. Since the discovery of the first halo nucleus 6He in 1986 [4], great interest has been put in the study of the halo phenomenon in nuclei both experimentally and theoretically. The extraction of accurate structure information of halo nuclei remains as a big challenge due to their very short lifetime, which requires unusual experimental methods and accurate theoretical analyses. The upgrade of rare isotope beam facilities worldwide provides us with new ways to explore these halo systems. As one of the most classical transfer reaction [5], (d, p) reaction plays an important role in extracting single-particle properties of nuclei with one neutron populating the unoccupied state of the target [6]
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