Accumulation of molecular products in the radiolysis of water in vessels with a free volume

Kinetics, mechanism and intermediates of some radiation-induced reactions in aqueous solutions

“…11 In addition, some other reactions involving Cl À 2 radical anions have been studied. This was done using N 2 Osaturated weakly acidic (5610 74 M HCl) aqueous solutions of NaCl after a 20-ns pulse of accelerated electrons [the absorbed dose per pulse was (1.5AE0.3)610 17 eV ml 71 ]. It was found that after the pulse, optical absorption at l = 340 nm passes through a maximum and then diminishes with time.…”

A Diffusion-Kinetic Model for Radiation-Chemical Transformations of Oxalic Acid and Oxalate Ions in Aqueous Solutions

“…The reaction scheme and the reaction rate constants adequately describe the well-known experimental data on the radiation-chemical degradation of water and the aqueous solutions of its radiolysis products (H 2 , H 2 O 2 , and O 2 ) over the range of pH 1-9 [3][4][5]. Note that water is the main constituent of LRW, and the action of ionizing radiation results in the formation of short-lived and highly reactive ions and radicals (hydrated electrons, H atoms, and OH radicals), as well as molecular products (H 2 , H 2 O 2 , and O 2 ).…”

“…In [3,4,6], the well-known [7] rate constant of reaction (13) equal to 9 × 10 7 l mol -1 s -1 was used for simulation. According to previous calculations [5], this value inadequately described experiments on the radiolysis of water and aqueous solutions and required that some other reaction rate constants be corrected (varied). Based on the fitting of experimental data with computer calculations, it was found that k 13 should be equal to 3.44 × 10 7 l mol -1 s -1 [5].…”

“…According to previous calculations [5], this value inadequately described experiments on the radiolysis of water and aqueous solutions and required that some other reaction rate constants be corrected (varied). Based on the fitting of experimental data with computer calculations, it was found that k 13 should be equal to 3.44 × 10 7 l mol -1 s -1 [5]. Therefore, special pulse-radiolysis studies were performed more recently in order to determine the rate constant of this most important reaction [8,9].…”

“…With allowance for this constant, it is unnecessary to correct the other known rate constants of reactions involved in the reaction scheme of water radiolysis. The reaction scheme completely describes the entire set of experimental results on the radiolysis of water and solutions containing hydrogen, oxygen, or hydrogen peroxide in the range of pH 1-9 [3][4][5].…”