The leakage neutron spectrum measurements have been done on benchmark spherical assembly-nickel sphere with a diameter of 50 cm and copper cube (block) dimensions 49.5 x 48 cm3 in Research Centre Rez (RC Rez). 252Cf source was placed into the centre nickel cube. proton recoil method used for measurement using hydrogen proportional detectors (HPD) pressure 400 1000 kPa (diameter is 4 cm) scintil...

Background: Monte Carlo simulations play a vital role in the calculation of the necessary shielding both for neutrons and photons. Advanced and simple shielding materials against neutron and gamma rays were compared by simulation using the MCNB4B Monte Carlo code. The simulations were carried out for the three common neutron sources, namely the 252Cf, the 241Am/Be and the DD neutron generator w...

This paper presents the results of ternary light charged particles from 252Cf spontenous fission source. The method DeltaE - E was applied to identify particle by a position sensitive telescope.The specific energy loss (DeltaE) measured using transmission type detector (thicknesses 150 μm ) ordered company Micron Semiconductors, while residual (E) Timepix with thicknesses 600 . It possible meas...