A study of reaction rates of (n, f ) , (n,\( \gamma\)) and (n, 2n) reactions in natU and 232Th by the neutron fluence produced in the graphite set-up (GAMMA-3) irradiated by 2.33 GeV deuteron beam

摘要: Spallation neutrons produced in the collision of a 2.33GeV deuteron beam with large lead target are moderated by thick graphite block surrounding and used to activate radioactive samples natU Th put at three different positions, identified as holes “a”, “b” “c” block. Rates (n, f), \( \gamma\) 2n) reactions two determined using gamma spectrometry. The ratios experimental reaction rates, R 2n)/R for 232Th estimated order understand role x n) kind Accelerator-Driven Sub-critical Systems. For Th-sample, ratio is ∼ 54 (10)% case hole “a” 95 (57)% compared 1.73(20)% 0.710(9)% sample. Also fission rates uranium thorium, f)/ 11.2 (17) 26.8(85) “b”. Similarly, 238U 2n)/ 0.36(4) 0.20(10) showing that more prone than . All simulated ones generating neutron fluxes from MCNPX 2.6c making use LA150 library cross-sections. calculated all reasonably good agreement. transmutation power, Pnorm well Pnorm/Pbeam set-up both some results “Energy plus Transmutation” TARC experiment.