alpha-decay calculations of heavy nuclei using an effective Skyrme interaction
(2013) In Physical Review C (Nuclear Physics) 88(6).- Abstract
- Background: For nuclei heavier than Pb-208 alpha decay is a dominating decay mode, and in the search of new superheavy elements one often observes chains of alpha decays. Purpose: Explore and test microscopic descriptions of alpha decay based on theories with effective nuclear interactions. Methods: The nuclear ground states are calculated with the Hartree-Fock-Bogoliubov (HFB) method using the Skyrme interaction. Microscopic alpha-decay formation amplitudes are calculated from the HFB wave functions, and the R-matrix formalism is utilized to obtain decay probabilities. Results: Using a large harmonic-oscillator basis we obtain converged alpha-decay widths. A comparison with experiment including all spherical even-even alpha emitting... (More)
- Background: For nuclei heavier than Pb-208 alpha decay is a dominating decay mode, and in the search of new superheavy elements one often observes chains of alpha decays. Purpose: Explore and test microscopic descriptions of alpha decay based on theories with effective nuclear interactions. Methods: The nuclear ground states are calculated with the Hartree-Fock-Bogoliubov (HFB) method using the Skyrme interaction. Microscopic alpha-decay formation amplitudes are calculated from the HFB wave functions, and the R-matrix formalism is utilized to obtain decay probabilities. Results: Using a large harmonic-oscillator basis we obtain converged alpha-decay widths. A comparison with experiment including all spherical even-even alpha emitting nuclei shows that the model consistently predicts too small formation amplitudes while relative values are in good agreement with experiment. Conclusions: The method was found to be numerically practical even with a large basis size. The comparison of formation amplitudes suggests that the pairing type correlations included in the HFB approach cannot produce sufficient a-particle clustering. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4262961
- author
- Ward, Daniel LU ; Carlsson, Gillis LU and Åberg, Sven LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C (Nuclear Physics)
- volume
- 88
- issue
- 6
- article number
- 064316
- publisher
- American Physical Society
- external identifiers
-
- wos:000328689700002
- scopus:84893031821
- ISSN
- 0556-2813
- DOI
- 10.1103/PhysRevC.88.064316
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- d58e87d6-d457-4ea6-a2f5-dbf9dac39b2b (old id 4262961)
- date added to LUP
- 2016-04-01 13:28:11
- date last changed
- 2022-03-21 18:46:14
@article{d58e87d6-d457-4ea6-a2f5-dbf9dac39b2b, abstract = {{Background: For nuclei heavier than Pb-208 alpha decay is a dominating decay mode, and in the search of new superheavy elements one often observes chains of alpha decays. Purpose: Explore and test microscopic descriptions of alpha decay based on theories with effective nuclear interactions. Methods: The nuclear ground states are calculated with the Hartree-Fock-Bogoliubov (HFB) method using the Skyrme interaction. Microscopic alpha-decay formation amplitudes are calculated from the HFB wave functions, and the R-matrix formalism is utilized to obtain decay probabilities. Results: Using a large harmonic-oscillator basis we obtain converged alpha-decay widths. A comparison with experiment including all spherical even-even alpha emitting nuclei shows that the model consistently predicts too small formation amplitudes while relative values are in good agreement with experiment. Conclusions: The method was found to be numerically practical even with a large basis size. The comparison of formation amplitudes suggests that the pairing type correlations included in the HFB approach cannot produce sufficient a-particle clustering.}}, author = {{Ward, Daniel and Carlsson, Gillis and Åberg, Sven}}, issn = {{0556-2813}}, language = {{eng}}, number = {{6}}, publisher = {{American Physical Society}}, series = {{Physical Review C (Nuclear Physics)}}, title = {{alpha-decay calculations of heavy nuclei using an effective Skyrme interaction}}, url = {{http://dx.doi.org/10.1103/PhysRevC.88.064316}}, doi = {{10.1103/PhysRevC.88.064316}}, volume = {{88}}, year = {{2013}}, }