Abstract
A new algorithm for the asymptotic nuclear coefficients calculation, which we call the method, is proved and developed. This method was proposed by Ramírez Suárez and Sparenberg (arXiv:1602.04082.) but no proof was given. We apply it to the bound state situated near the channel threshold when the Sommerfeld parameter is quite large within the experimental energy region. As a result, the value of the conventional effective-range function is actually defined by the Coulomb term. One of the resulting effects is a wrong description of the energy behavior of the elastic scattering phase shift reproduced from the fitted total effective-range function . This leads to an improper value of the asymptotic normalization coefficient (ANC) value. No such problem arises if we fit only the nuclear term. The difference between the total effective-range function and the Coulomb part at real energies is the same as the nuclear term. Then we can proceed using just this method to calculate the pole position values and the ANC. We apply it to the vertices and . The calculated ANCs can be used to find the radiative capture reaction cross sections of the transfers to the bound final states as well as to the .
- Received 15 February 2017
- Revised 13 July 2017
DOI:https://doi.org/10.1103/PhysRevC.96.025809
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