25 keV neutron beam facility at the reactor “Apsara”
1973; Elsevier BV; Volume: 111; Issue: 2 Linguagem: Inglês
10.1016/0029-554x(73)90081-5
ISSN1878-3759
AutoresE. Kondaiah, R.P. Anand, D. S. Bhattacharya,
Tópico(s)Nuclear physics research studies
ResumoA monoergic neutron beam of 25 keV energy with an energy spread of less than 5 keV has been obtained at the swimming-pool type reactor “Apsara” using a filter assembly consisting of iron, aluminum and sulphur. The filtered beam characteristics have been studied for various compositions of the filter assembly and for various positions of the filter in beam hole no. 2. The 25 keV neutron flux was measured as (1.5±0.05) × 104 neutrons/cm2 s. when the reactor was operating at 400 kW. The contamination due to neutrons of energy greater than 25 keV is found to be less than 2% of the 25 keV neutron flux. The gamma dose in front of the filter assembly is found to be ≈ 25 mR/h.
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