Spins and Magnetic Moments of $^{49}$K and $^{51}$K: establishing the 1/2$^+$ and 3/2$^+$ level ordering beyond $N$ = 28
| Autor: | Papuga, J., Bissell, M. L., Kreim, K., Blaum, K., Brown, B. A., De Rydt, M., Ruiz, R. F. Garcia, Heylen, H., Kowalska, M., Neugart, R., Neyens, G., Nörtershäuser, W., Otsuka, T., Rajabali, M. M., Sánchez, R., Utsuno, Y., Yordanov, D. T. |
|---|---|
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Physical Review Letters; Vol. 110, 172503, (2013) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.110.172503 |
| Popis: | The ground-state spins and magnetic moments of $^{49,51}$K have been measured using bunched-beam high-resolution collinear laser spectroscopy at ISOLDE-CERN. For $^{49}$K a ground-state spin $I = 1/2$ was firmly established. The observed hyperfine structure of $^{51}$K requires a spin $I > 1/2$ and from its magnetic moment $\mu(^{51}\text{K})= +0.5129(22)\, \mu_N$ a spin/parity $I^\pi=3/2^+$ with a dominant $\pi 1d_{3/2}^{-1}$ hole configuration was deduced. This establishes for the first time the re-inversion of the single-particle levels and illustrates the prominent role of the residual monopole interaction for single-particle levels and shell evolution. Comment: 5 pages, 3 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|