| Autor: |
E.W. Lees, B.H. Patrick, E.M. Bowey |
| Rok vydání: |
1980 |
| Předmět: |
|
| Zdroj: |
Nuclear Instruments and Methods. 171:29-41 |
| ISSN: |
0029-554X |
| Popis: |
This paper describes the design and commissioning of a large oil-moderated BF3 detector assembly for photofission and photoneutron studied in the photon energy range 5–10 MeV. The detector is shown to have a high neutron detection efficiency which is relatively independent of neutron energy in good agreement with the design predictions. Measurements are presented of the average number of prompt neutrons released per photofission ( ν ) for the reactions 238U(γ, f) and 232Th(γ, f) as a function of mean photon energy. Comparisons with previous work show good agreement where the results overlap and indicate different behaviour of ν with photon energy for these two nuclei. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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