Speaker
Prof.
John F Sharpey-Schafer
(University of Western Cape)
Description
The concept of configuration dependent pairing does not usually appear in the textbooks and is rarely considered in the literature. The resulting lowering of excited 0n+ states into the pairing gap in even-even deformed nuclei accounts for many states that have traditionally been assumed to arise from time-dependent “β vibrations” of the nuclear shape along the symmetry axis. The experimental evidence that requires the low-lying 0n+ states to be re-evaluated will be reviewed from the early (p,t) work of Maher et al. [1] and Kolata and Oohoudt [2] to more recent γ-ray spectroscopy studies [3-5].
[1] J. V. Maher, J. R. Erskine, A. M. Friedman, J. P. Schiffer and R. H. Siemssen, Phys. Rev. Lett. 25, 302 (1970).
[2] J. J. Kolata and M. Oothoudt, Phys. Rev. 15, 1947 (1977).
[3] P. E. Garrett, J. Phys. G27, R1 (2001).
[4] W. D. Kulp et al., Phys. Rev. C77, 061301(R) (2008).
[5] J. F. Sharpey-Schafer et al., Eur. Phys. J. A47, 5 & 6 (2011).
Primary author
Prof.
John F Sharpey-Schafer
(University of Western Cape)
