The empirical (1f 7/2 ) n model

Shape coexistence around 1644S28: The deformed N = 28 region

“…Naively, the main features of these nuclei should be well reproduced in terms of a single-j shell-model picture governed by pairing interaction. However, many properties of the observed states cannot be accounted for by the results of the empirical (1f 7/2 ) n shell model calculations [14] and the extension to the full (f, p) configuration space is necessary [15,16]. Several nuclei around 48 Cr exhibit rotation-like level spacings [17,18] and the self-consistent calculations [19][20][21] [23].)…”

Shape coexistence around 1644S28: the deformed N = 28 region 1565

“…Naively, the main features of these nuclei should be well reproduced in terms of a single-j shell-model picture governed by pairing interaction. However, many properties of the observed states cannot be accounted for by the results of the empirical (1f 7/2 ) n shell model calculations [14] and the extension to the full (f, p) configuration space is necessary [15,16]. Several nuclei around 48 Cr exhibit rotation-like level spacings [17,18] and the self-consistent calculations [19][20][21] yield deformed ground states.…”

Calculating Energy Levels in <sup>49</sup>Mn/<sup>49</sup>Cr Mirror Nuclei with OXBASH Code

“…Experimental studies on the stability of some nuclei show that nuclei with protons or neutrons numbers (2,8,20, 50, 82, etc.) are more numerous and stable.…”

“…This model consists of 1 / valence orbitals. The code OXBASH for Windows has been used to calculate the nuclear structure for the above nuclei by employing the F7PN (depending charges) model space with the F748BPN effective interaction [2].…”

“…beyond closed shells), one can perform exact shell model calculations which make the comparison with experiments more transparent and hence more attractive also for experimentalists. However, with any reasonable model space truncation one is always left with the problem of determining an effective residual interaction for the nucleons in the considered orbits, usually assumed to be a two-body force [2]. Clearly, the smaller the number of orbits considered the smaller the number of two-body matrix elements one has to deal with.…”