Calculated fission-fragment mass yields and average total kinetic energies of heavy and superheavy nuclei
(2020) In European Physical Journal A 56(2).- Abstract
Fission-fragment mass and total-kinetic-energy (TKE) distributions following fission of even-even nuclides in the region 74 ≤ Z≤ 126 and 92 ≤ N≤ 230 , comprising 896 nuclides have been calculated using the Brownian shape-motion method. The emphasis is the region of superheavy nuclei. To show compatibility with earlier results the calculations are extended to include earlier studied regions. An island of asymmetric fission is obtained in the superheavy region, 106 ≤ Z≤ 114 and 162 ≤ N≤ 176 , where the heavy fragment is found to be close to 208Pb and the light fragment adjusts accordingly. Most experimentally observed α-decay chains of superheavy nuclei with Z> 113 terminate by spontaneous fission in our predicted region of... (More)
Fission-fragment mass and total-kinetic-energy (TKE) distributions following fission of even-even nuclides in the region 74 ≤ Z≤ 126 and 92 ≤ N≤ 230 , comprising 896 nuclides have been calculated using the Brownian shape-motion method. The emphasis is the region of superheavy nuclei. To show compatibility with earlier results the calculations are extended to include earlier studied regions. An island of asymmetric fission is obtained in the superheavy region, 106 ≤ Z≤ 114 and 162 ≤ N≤ 176 , where the heavy fragment is found to be close to 208Pb and the light fragment adjusts accordingly. Most experimentally observed α-decay chains of superheavy nuclei with Z> 113 terminate by spontaneous fission in our predicted region of asymmetric fission. In these cases, the pronounced large asymmetry is accompanied by a low TKE value compatible with measurements.
(Less)
- author
- Albertsson, Martin LU ; Carlsson, B. Gillis LU ; Døssing, Thomas LU ; Möller, Peter LU ; Randrup, Jørgen LU and Åberg, Sven LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal A
- volume
- 56
- issue
- 2
- article number
- 46
- publisher
- Springer
- external identifiers
-
- scopus:85079064132
- ISSN
- 1434-6001
- DOI
- 10.1140/epja/s10050-020-00036-9
- language
- English
- LU publication?
- yes
- id
- d121aa75-ec10-46aa-ab7a-8571c0f11aa4
- date added to LUP
- 2021-01-07 10:58:19
- date last changed
- 2022-04-26 23:03:23
@article{d121aa75-ec10-46aa-ab7a-8571c0f11aa4, abstract = {{<p>Fission-fragment mass and total-kinetic-energy (TKE) distributions following fission of even-even nuclides in the region 74 ≤ Z≤ 126 and 92 ≤ N≤ 230 , comprising 896 nuclides have been calculated using the Brownian shape-motion method. The emphasis is the region of superheavy nuclei. To show compatibility with earlier results the calculations are extended to include earlier studied regions. An island of asymmetric fission is obtained in the superheavy region, 106 ≤ Z≤ 114 and 162 ≤ N≤ 176 , where the heavy fragment is found to be close to <sup>208</sup>Pb and the light fragment adjusts accordingly. Most experimentally observed α-decay chains of superheavy nuclei with Z> 113 terminate by spontaneous fission in our predicted region of asymmetric fission. In these cases, the pronounced large asymmetry is accompanied by a low TKE value compatible with measurements.</p>}}, author = {{Albertsson, Martin and Carlsson, B. Gillis and Døssing, Thomas and Möller, Peter and Randrup, Jørgen and Åberg, Sven}}, issn = {{1434-6001}}, language = {{eng}}, number = {{2}}, publisher = {{Springer}}, series = {{European Physical Journal A}}, title = {{Calculated fission-fragment mass yields and average total kinetic energies of heavy and superheavy nuclei}}, url = {{http://dx.doi.org/10.1140/epja/s10050-020-00036-9}}, doi = {{10.1140/epja/s10050-020-00036-9}}, volume = {{56}}, year = {{2020}}, }