4-bromoacetanilide-methanol vapour attacks the paraffin cylinder surrounding the (RaBe) neutron source in charge plate collection experiments

Recoil chemistry of 128I atoms in cesium iodate under (n, γ) process

An attempt js made to study the behaviour of recoil128I atoms in neutron irradiated I2O5 at ambient temperature. The initial retention is found to be 44±2%. However, a substantial increase /57±2%/ in the value is observed upon heating the sample at 473 K for 1 h prior to irradiation. A kinetic study of post-recoil thermal annealing of neutron irradiated material is also presented. Effect of pre-heat treatment results in a decrease of rate constants and saturation retention values at respective temperatures while the Eact for the overall process remains almost unaltered.

Recoil128I atoms in iodine pentoxide under /n, γ/ process

Chemical effects of radiative thermal neutron capture in solid solutions

The effect of pre-heat treatment on the (n, γ) reaction of LiIO3 and Cu(IO3)2 targets is an increase in the initial retention in Cu(IO3)2 and decrease in LiIO3. This has been ascribed to the competitive participation of oxidizing and reducing inherent crystal defects. Annealing kinetic studies reveal two apparent first-order processes for both the pre-heated and untreated iodates. An exciton mechanism is proposed to explain the higher plateau values and annealing kinetics in pre-heated Cu(IO3)2 and LiIO3.

Archita Patnaik

Papers

Pre-heat treatment study of recoil 128I in lithium and copper iodates