Two-neutron transfer reactions and the quantum chaos measure of nuclear spectra

Levon, A. I.; Magner, A. G.

doi:10.15407/jnpae2019.02.111

Cited by 2 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In such a sub-space, one finds more a system disordering or chaos * . The arguments for this interpretation of the K-breaking are working well for the NNSDs in the case of actinide nuclei [51,55]. The present results for 158 Gd differ from those in Ref.…”

Section: B Dwba Analysissupporting

confidence: 56%

“…Its NNSD is between the Wigner and Poisson limits, i.e. is not so pronounced as in actinide nuclei [51,55]. And Wigner's contribution to the NNSD in this case (b) is much less than Poisson one.…”

Section: B Dwba Analysismentioning

confidence: 78%

“…[46]. However, from a general point of view, having a good quan-tum number K one should expect a shift to the Wigner distribution in the sub-space of the fixed K value for a given angular momentum I with respect to the case of accounting for all K [53][54][55]. This is because of decreasing of the single-valued integral-motion numbers (conservation laws) due to a breaking of the axial symmetry in the sub-space versus its presence in the complete space.…”

Section: B Dwba Analysismentioning

confidence: 99%

See 2 more Smart Citations

High-resolution study of excited states in 158Gd with (p,t) reactions

Levon,

Bucurescu,

Costache

et al. 2019

Preprint

View full text Add to dashboard Cite

The excitation spectra in the deformed nucleus 158 Gd have been studied with high energy resolution by means of the (p,t) reaction using the Q3D spectrograph facility at the Munich Tandem accelerator. The angular distributions of tritons were measured for more than 200 excited states seen in the triton spectra up to 4.3 MeV. A number of 36 excited 0 + states (five tentative), have been assigned by comparison of experimental angular distributions with the calculated ones using the CHUCK code. Assignments for levels with higher spins are the following: 95 for 2 + states, 64 for 4 + states, 14 for 6 + states and about 20 for negative parity states. Sequences of states which can be treated as rotational bands are selected. The analysis of the moments of inertia defined for these bands is carried out. This high number of excited states in a deformed nucleus, close to a complete level scheme, constitutes a very good ground to check models of nuclear structure. The large ensembles of states with the same spin-parity offer unique opportunities for statistical analysis. Such an analysis for the 0 + , 2 + and 4 + states sequences, for all K-values and for well-determined projections K of the angular momentum is performed. The obtained data may indicate on a K symmetry breaking. Experimental data are compared with interacting boson model (IBM) calculations using the spdf version of the model. The energies of the low-lying levels, the transition probabilities in the first bands and the distribution in transfer intensity of the 0 + states are calculated and compared with experiment.

show abstract

Section: B Dwba Analysissupporting

confidence: 56%

Section: B Dwba Analysismentioning

confidence: 78%