Influence of ionization density on radiolysis of cyclohexane-benzene mixtures

G. Földiák, M. Roder, L. Wojnárovits

Research output: Contribution to journalArticle

Abstract

Cyclohexane-benzene mixtures were irradiated by 210Po-α-radiation (LET = 200 eV/nm) with the effective energy of 3 MeV and the results were compared with those obtained by 1.25 MeV λ-irradiation of 60Co (LET = 0.2 eV/nm). While during λ-irradiation-similarly to the data known from the literature-the G(c-C6H10) and the G((c-C6H11)2) values were decreased even by a small amount of benzene, the yields of both products obtained by α-irradiation were in the same range practically constant, and began to decrease only above the benzene concentration of 0.3 mol dm-3 (about 3 electron %). The "protection" in the case of λ-irradiation was interpreted by positive ion scavenging, S1 excited cyclohexane molecule quenching and thermal H atoms scavenging. The low efficiency of all these three components of "protection" in α-radiolysis is attributed principally to the very high concentration of intermediates in the track/core compared to the relatively low concentration of benzene. The conclusions were also supported by comparison with the data obtained in cyclohexane-iodine systems.

Original languageEnglish
Pages (from-to)77-80
Number of pages4
JournalInternational Journal of Radiation Applications and Instrumentation. Part
Volume39
Issue number1
DOIs
Publication statusPublished - 1992

Fingerprint

radiolysis
cyclohexane
benzene
ionization
irradiation
scavenging
positive ions
iodine
low concentrations
quenching
radiation
products
atoms
molecules
electrons
energy

Cite this

Influence of ionization density on radiolysis of cyclohexane-benzene mixtures. / Földiák, G.; Roder, M.; Wojnárovits, L.

In: International Journal of Radiation Applications and Instrumentation. Part, Vol. 39, No. 1, 1992, p. 77-80.

Research output: Contribution to journalArticle

@article{990ce70cbb6f441887d763072b6e803f,
title = "Influence of ionization density on radiolysis of cyclohexane-benzene mixtures",
abstract = "Cyclohexane-benzene mixtures were irradiated by 210Po-α-radiation (LET = 200 eV/nm) with the effective energy of 3 MeV and the results were compared with those obtained by 1.25 MeV λ-irradiation of 60Co (LET = 0.2 eV/nm). While during λ-irradiation-similarly to the data known from the literature-the G(c-C6H10) and the G((c-C6H11)2) values were decreased even by a small amount of benzene, the yields of both products obtained by α-irradiation were in the same range practically constant, and began to decrease only above the benzene concentration of 0.3 mol dm-3 (about 3 electron {\%}). The {"}protection{"} in the case of λ-irradiation was interpreted by positive ion scavenging, S1 excited cyclohexane molecule quenching and thermal H atoms scavenging. The low efficiency of all these three components of {"}protection{"} in α-radiolysis is attributed principally to the very high concentration of intermediates in the track/core compared to the relatively low concentration of benzene. The conclusions were also supported by comparison with the data obtained in cyclohexane-iodine systems.",
author = "G. F{\"o}ldi{\'a}k and M. Roder and L. Wojn{\'a}rovits",
year = "1992",
doi = "10.1016/1359-0197(92)90176-G",
language = "English",
volume = "39",
pages = "77--80",
journal = "Radiation Physics and Chemistry",
issn = "0969-806X",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Influence of ionization density on radiolysis of cyclohexane-benzene mixtures

AU - Földiák, G.

AU - Roder, M.

AU - Wojnárovits, L.

PY - 1992

Y1 - 1992

N2 - Cyclohexane-benzene mixtures were irradiated by 210Po-α-radiation (LET = 200 eV/nm) with the effective energy of 3 MeV and the results were compared with those obtained by 1.25 MeV λ-irradiation of 60Co (LET = 0.2 eV/nm). While during λ-irradiation-similarly to the data known from the literature-the G(c-C6H10) and the G((c-C6H11)2) values were decreased even by a small amount of benzene, the yields of both products obtained by α-irradiation were in the same range practically constant, and began to decrease only above the benzene concentration of 0.3 mol dm-3 (about 3 electron %). The "protection" in the case of λ-irradiation was interpreted by positive ion scavenging, S1 excited cyclohexane molecule quenching and thermal H atoms scavenging. The low efficiency of all these three components of "protection" in α-radiolysis is attributed principally to the very high concentration of intermediates in the track/core compared to the relatively low concentration of benzene. The conclusions were also supported by comparison with the data obtained in cyclohexane-iodine systems.

AB - Cyclohexane-benzene mixtures were irradiated by 210Po-α-radiation (LET = 200 eV/nm) with the effective energy of 3 MeV and the results were compared with those obtained by 1.25 MeV λ-irradiation of 60Co (LET = 0.2 eV/nm). While during λ-irradiation-similarly to the data known from the literature-the G(c-C6H10) and the G((c-C6H11)2) values were decreased even by a small amount of benzene, the yields of both products obtained by α-irradiation were in the same range practically constant, and began to decrease only above the benzene concentration of 0.3 mol dm-3 (about 3 electron %). The "protection" in the case of λ-irradiation was interpreted by positive ion scavenging, S1 excited cyclohexane molecule quenching and thermal H atoms scavenging. The low efficiency of all these three components of "protection" in α-radiolysis is attributed principally to the very high concentration of intermediates in the track/core compared to the relatively low concentration of benzene. The conclusions were also supported by comparison with the data obtained in cyclohexane-iodine systems.

UR - http://www.scopus.com/inward/record.url?scp=50749132504&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=50749132504&partnerID=8YFLogxK

U2 - 10.1016/1359-0197(92)90176-G

DO - 10.1016/1359-0197(92)90176-G

M3 - Article

AN - SCOPUS:50749132504

VL - 39

SP - 77

EP - 80

JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

SN - 0969-806X

IS - 1

ER -