Structure of states in 12Be via the 11Be(d,p) reaction

Experimental study of bound states in12Be through low-energy11Be(d,p)Johansen1, Bildstein2, Borge3 et al. 2013Phys. Rev. C273180View full textAdd to dashboardCite

“…The concept of a spectroscopic factor, often used earlier as the key quantity to be extracted from experiment, has also been questioned during the last decade-see Mukhamedzhanov [49] and Jennings [50] for recent overviews-asymptotic normalization coefficients (ANCs) [49,[51][52][53] have been used instead. A proper theoretical analysis of our data is beyond the scope of the present paper so we shall here just briefly indicate what can be learned from a standard approach to allow comparison with earlier experimental work [26]. The differential cross sections are compared to distorted wave Born approximation (DWBA) calculations performed with FRESCO [54,55].…”

“…The last two 11 Be potentials are taken from Fitz et al [60] and Han et al [61]. These two potentials were used in combination with the two 12 Be + p potentials to investigate the differential cross sections from the 11 Be(d,p) 12 Be experiment performed at TRIUMF by Kanungo et al [26].…”

“…The deduced spectroscopic factors from the four calculations are given in Table III. The spectroscopic factors are given along with spectroscopic factors determined by Kanungo et al [26] and from two theoretical models: a shell model calculation made by Fortune et al [64] and a three-body model calculation made by Garrido et al [65]. Effects of core excitation are not yet included in the three-body model [65].…”

“…The configuration mixing was first suggested in 1976 by Barker [17] following a β-decay study of 12 Be. Further experimental support for this suggestion has come through measurements of transition strengths to the 1 − 1 [18], 0 + 2 [19,20], and 2 + 1 bound states [21], through extraction of the ground state charge radius [22], and through nuclear knock-out [23], break-up [24,25], transfer [26], and charge exchange [27] reactions. These measurements have shown that the N = 8 magic number is clearly broken in 12 Be and the detailed mixing of the shells is still being investigated.…”

“…Most recent studies have been in break-up reactions, and also a 11 Be(d,p) 12 Be transfer reaction has been performed at TRIUMF by Kanungo et al [26]. Spectroscopic factors were determined in the latter for all four bound states.…”