Investigation of the neutron shell structure of the even-even isotopes 40–56Ca within the dispersive optical model

Manifestation of shell effects in the collective properties of atomic nuclei

“…The properties of nuclei with this occupation num ber were studied in [7,8]. Having analyzed other char acteristics of such nuclei, the authors of these papers showed that the properties of nuclei with N = 16 are close to the magic ones.…”

Dispersive optical potential for nuclei with N and Z values changing toward the nucleon drip lines

“…2a along with experimental data and with the separation energies −S n (N + 1, Z) and −S n (N, Z) from [23,24]. A good description of data on E expt nlj [7], including the energies of the 1d 3/2 and 2s 1/2 states, was attained for stable isotopes. In contrast to [4], where there was no agreement for these states, we attained this agreement owing to the use of reliable experimental data on E expt nlj from [7].…”

“…A good description of data on E expt nlj [7], including the energies of the 1d 3/2 and 2s 1/2 states, was attained for stable isotopes. In contrast to [4], where there was no agreement for these states, we attained this agreement owing to the use of reliable experimental data on E expt nlj from [7]. In the doubly magic isotopes 40,48,70 Cа, the energies E + and E − are close to −S n (N + 1, Z) and −S n (N, Z), respectively, and the Fermi energy lies at the midpoint between E + and E − .…”

“…In the analysis, we included experimental data on E expt nlj in the vicinity of the energy E F that were obtained by simultaneously evaluating data on the nucleon-stripping and nucleon-pickup reactions on the same nucleus. Such data were obtained for neutron and/or proton states in stable isotopes of Ca, Ti, Cr, Fe, Ni, Zn, Ge, Se, Sr, Zr, Сd, and Sn, and are given in [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Nucleosynthesis of heavy elements in the r-process

“…It is possible that, with increasing fissilenucleus mass, the mass distribution of fission products will again become asymmetric, tending to known or some other magic numbers [135,136], and this will affect changes in the mass distribution. In recent years, there appeared alternative calculations of the mass distribution of fission products [73,137,138] both for fragments measured experimentally and for exotic nuclei whose distribution is necessary for describing rapid nucleosynthesis.…”