Measurement of fast neutron induced (n,γ) reaction cross-section of Zn, Zr, Sb and Sb in the energy range of 1 to 2 MeV.

The (n,γ) reaction cross-section for the elements Zn, Zr, Sb and Sb, present in the reactor structural/shielding materials, was measured by neutron activation technique in the neutron energy region of 1-2 MeV as very limited data is available in this energy range. Further, the neutron spectrum peaks in this energy region for the fast breeder reactors and proposed accelerator driven sub-critical systems. The natural strontium (Sr) element was used as a neutron flux monitor by considering effective combined reaction cross-section for Sr(n,γ)Sr and Sr(n,n')Sr reactions.

Determination of europium content in LiSiO(Eu) by neutron activation analysis using Am-Be neutron source.

Circulardiscs of LiSiO doped with europium were prepared and a new activation procedure for the neutron dose estimation in a breeder blanket of fusion reactor is described. The amount of europium in the disc was determined by neutron activation analysis (NAA) using an isotopic neutron source. The average neutron absorption cross section for the reaction was calculated using neutron distribution of the Am-Be source and available neutron absorption cross section data for the Eu(n,γ)Eu reaction, which was used for estimation of europium in the pallet.