| Autor: |
O. I. Osetrov, D. N. Vakhtin, Juha Äystö, V.A. Rubchenya, I. D. Alkhazov, V. G. Lyapin, G. P. Tiourin, Andrey Kuznetsov, Wladyslaw Henryk Trzaska, S. V. Khlebnikov |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
Zeitschrift für Physik A Hadrons and Nuclei. 354:287-291 |
| ISSN: |
0939-7922 |
| DOI: |
10.1007/bf02769528 |
| Popis: |
Neutron and fission fragment spectra following the180Hf(40Ar,f) reaction atE lab=216MeV were measured. The following neutron total, pre- and post-scission multiplicities were extracted:M tot =7.2±1.3,M pre =2.7±0.9,M post =4.5±0.9. The average temperature parameters of the neutron spectra areT pre=(1.63±0.16) MeV andT post=(1.14±0.26)MeV. The mean total kinetic energy of the fission fragments is TKE=(166±10) MeV and the measured width is σTKE=17.3MeV. The width of the fragment mass distribution is σ A =18.3u. The same reaction was analyzed using a modified statistical code which includes nuclear dissipation effects and particle and γ-ray emission in the equilibrium compound nucleus state and saddle-to-scission transition. The extracted value of nuclear friction coefficient indicates over-damped large-scale fission motion. The obtained total fission time τfiss=9·10−20s is in agreement with other existing data. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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