High-spin transition quadrupole moments in neutron-rich Mo and Ru nuclei: testing $��$ softness?
Autor: | Snyder, J. B., Reviol, W., Sarantites, D. G., Afanasjev, A. V., Janssens, R. V. F., Abusara, H., Carpenter, M. P., Chen, X., Chiara, C. J., Greene, J. P., Lauritsen, T., McCutchan, E. A., Seweryniak, D., Zhu, S. |
---|---|
Rok vydání: | 2013 |
Předmět: | |
DOI: | 10.48550/arxiv.1309.3320 |
Popis: | The transition quadrupole moments, $Q_{t}$, of rotational bands in the neutron-rich, even-mass $^{102-108}$Mo and $^{108-112}$Ru nuclei were measured in the 8 to 16 $\hbar $ spin range with the Doppler-shift attenuation method. The nuclei were populated as fission fragments from $^{252}$Cf fission. The detector setup consisted of the Gammasphere spectrometer and the HERCULES fast-plastic array. At moderate spin, the $Q_{t}$ moments are found to be reduced with respect to the values near the ground states. Attempts to describe the observations in mean-field-based models, specifically cranked relativistic Hartree-Bogoliubov theory, illustrate the challenge theory faces and the difficulty to infer information on $��$ softness and triaxiality from the data. 17 pages, 4 figures |
Databáze: | OpenAIRE |
Externí odkaz: |