Nuclear magnetic moment of the 57Cu ground state |
| |
Authors: | Minamisono K Mantica P F Mertzimekis T J Davies A D Hass M Pereira J Pinter J S Rogers W F Stoker J B Tomlin B E Weerasiri R R |
| |
Institution: | National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, 48824, USA. |
| |
Abstract: | The nuclear magnetic moment of the ground state of (57)Cu(Iota(pi) = 3/2(-), T(1/2) = 196.3 ms) has been measured to be /mu((57)Cu)/ = (2.00 +/- 0.05)mu(N) using the beta-NMR technique. Together with the known magnetic moment of the mirror partner (57)Ni, the spin expectation value was extracted as = -0.078 +/- 0.13. This is the heaviest isospin mirror T = 1/2 pair above the (40)Ca region for which both ground state magnetic moments have been determined. The discrepancy between the present results and shell-model calculations in the full f p shell giving mu((57)Cu) approximately 2.4mu(N) and approximately 0.5 implies significant shell breaking at (56)Ni with the neutron number N = 28. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|