TY - JOUR AU - Hasan, A. K. AU - Obeed, F. H. AU - Rahim, A. N. PY - 2020/02/03 Y2 - 2024/03/29 TI - Positive Parity Levels of 21,23Na Isotopes by Using the Nuclear Shell JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 65 IS - 1 SE - Fields and elementary particles DO - 10.15407/ujpe65.1.3 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019340 SP - 3 AB - <p>The energy levels and transition probabilities B(E2; ↓) i B(M1; ↓) have been investigated for <sup>21,23</sup>Na isotopes by using the (USDA and USDB) interactions in the (sd-shell) model space. In the calculations of the shell model, it has been assumed that all possible many-nucleon configurations are specified by the (0d<sub>5/2</sub>, 1s<sub>1/2</sub> i 0d<sub>3/2</sub>) states above <sup>16</sup>O doubly magic nucleus. The available empirical data are in a good agreement with predictions of theoretical energy levels. Spins and parities are affirmed for new levels, transition probabilities B(E2; ↓) and B(M1; ↓) are predicted as well.</p> ER -