Published January 29, 2018
| Version v1
Publication
Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n-TOF facility
Description
Neutron-induced fission cross sections of 238U and 235U are used as standards
in the fast neutron region up to 200 MeV. A high accuracy of the standards is relevant to
experimentally determine other neutron reaction cross sections. Therefore, the detection
efficiency should be corrected by using the angular distribution of the fission fragments
(FFAD), which are barely known above 20 MeV. In addition, the angular distribution
of the fragments produced in the fission of highly excited and deformed nuclei is an
important observable to investigate the nuclear fission process.
In order to measure the FFAD of neutron-induced reactions, a fission detection setup
based on parallel-plate avalanche counters (PPACs) has been developed and successfully
used at the CERN-n_TOF facility. In this work, we present the preliminary results on the
analysis of new 235U(n,f) and 238U(n,f) data in the extended energy range up to 200 MeV
compared to the existing experimental data.
Additional details
Identifiers
- URL
- https://idus.us.es/handle//11441/69687
- URN
- urn:oai:idus.us.es:11441/69687
Origin repository
- Origin repository
- USE