γ-Radiolysis of cyclohexane with electron scavengers. VI. N 2 O and SF 6 as electron scavengers in the vapor phase
1968; NRC Research Press; Volume: 46; Issue: 22 Linguagem: Inglês
10.1139/v68-582
ISSN1480-3291
AutoresN. H. Sagert, Randall W. Robinson, A. S. Blair,
Tópico(s)Radiation Effects and Dosimetry
ResumoThe γ-radiolysis of cyclohexane has been examined in the vapor phase using N 2 O and SF 6 as electron scavengers. Both N 2 O and SF 6 reduce the hydrogen yield from 4.6 to 3.0 G units, indicating that 3.0 G units of hydrogen have neutral species as precursors, while 1.6 G units have electrons as precursors.Radiolysis of cyclohexane vapor with more than 2% N 2 O produces 10.4 G units of cyclohexene and 11.5 of nitrogen. Carbon dioxide reduces both these yields; the extrapolated value of G(N 2 ) is equal to G(electrons) at infinite CO 2 concentration. Thus O − is likely a precursor of that part of the nitrogen yield in excess of G(electrons), and of the cyclohexene yield associated with this nitrogen yield.The first order molecular detachment of hydrogen is unaffected by electron scavengers, showing that most of this first order yield has neutral precursors. The implications for Dyne's general mechanism of hydrocarbon radiolysis are discussed.
Referência(s)