LET effects on the hydrogen production induced by the radiolysis of pure water

F. Crumière; J. Vandenborre; R. Essehli; G. Blain; J. Barbet; M. Fattahi

doi:10.1016/j.radphyschem.2012.07.010

LET effects on the hydrogen production induced by the radiolysis of pure water

F. Crumière, J. Vandenborre, R. Essehli, G. Blain, J. Barbet, M. Fattahi

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Radiation chemical primary yields g(H₂) have been determined for irradiations performed with ⁶⁰Co γ-rays source of LCP (Orsay, France) and with helium ion beams (E_α=5.0MeV-64.7MeV) using protective agent bromide anions in solution. The α (⁴He²⁺) irradiation experiments were performed either at CEMHTI or at the new ARRONAX cyclotron facility (2010). Both sources (γ and cyclotrons) allow working with a large LET value range between 0.23 and 151.5keV/μm. On one hand, the obtained results have been compared with those available in the literature and plotted as a function of the LET parameter in order to discuss the effects of track structure on the production of molecular hydrogen. On the other hand, the primary radiation chemistry yield g(H₂) values are compared with global radiation chemical yields G(H₂) obtained during irradiations of pure water irradiated under air or argon without scavenging. For each system, it appears that radiation chemical yields increase with the LET value. Our results suggest that using bromide anions, at low concentration, as a protective agent becomes ineffective when the LET value used is higher than 120±20keV/μm.

Original language	English
Pages (from-to)	74-79
Number of pages	6
Journal	Radiation Physics and Chemistry
Volume	82
Issue number	1
DOIs	https://doi.org/10.1016/j.radphyschem.2012.07.010
State	Published - Jan 2013
Externally published	Yes

Funding

We thank Professor M. Mostafavi for allowing us to use the 60 Co source of the Laboratoire de Chimie Physique (Orsay) and respectively Dr. T. Sauvage and technical staffs for the irradiations at the CEMHTI and ARRONAX cyclotrons facilities. Moreover, we acknowledge the staffs of ARRONAX and CEMHTI facilities for their assistance during our experiments. Finally, we thank Dr. Jim Neeway for his help with the English. The work describes herein was supported by the Région Pays de la Loire (CPER Researches programs).

Funders	Funder number
Conseil Régional des Pays de la Loire

Keywords

Alpha irradiation
Gamma irradiation
LET parameter
Molecular hydrogen radiation chemical yield
Scavenging efficiency
Water radiolysis

Access to Document

10.1016/j.radphyschem.2012.07.010

Cite this

@article{cea7e8a34bdb4b90b603f8b242093e10,

title = "LET effects on the hydrogen production induced by the radiolysis of pure water",

abstract = "Radiation chemical primary yields g(H2) have been determined for irradiations performed with 60Co γ-rays source of LCP (Orsay, France) and with helium ion beams (Eα=5.0MeV-64.7MeV) using protective agent bromide anions in solution. The α (4He2+) irradiation experiments were performed either at CEMHTI or at the new ARRONAX cyclotron facility (2010). Both sources (γ and cyclotrons) allow working with a large LET value range between 0.23 and 151.5keV/μm. On one hand, the obtained results have been compared with those available in the literature and plotted as a function of the LET parameter in order to discuss the effects of track structure on the production of molecular hydrogen. On the other hand, the primary radiation chemistry yield g(H2) values are compared with global radiation chemical yields G(H2) obtained during irradiations of pure water irradiated under air or argon without scavenging. For each system, it appears that radiation chemical yields increase with the LET value. Our results suggest that using bromide anions, at low concentration, as a protective agent becomes ineffective when the LET value used is higher than 120±20keV/μm.",

keywords = "Alpha irradiation, Gamma irradiation, LET parameter, Molecular hydrogen radiation chemical yield, Scavenging efficiency, Water radiolysis",

author = "F. Crumi{\`e}re and J. Vandenborre and R. Essehli and G. Blain and J. Barbet and M. Fattahi",

year = "2013",

month = jan,

doi = "10.1016/j.radphyschem.2012.07.010",

language = "English",

volume = "82",

pages = "74--79",

journal = "Radiation Physics and Chemistry",

issn = "0969-806X",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - LET effects on the hydrogen production induced by the radiolysis of pure water

AU - Crumière, F.

AU - Vandenborre, J.

AU - Essehli, R.

AU - Blain, G.

AU - Barbet, J.

AU - Fattahi, M.

PY - 2013/1

Y1 - 2013/1

N2 - Radiation chemical primary yields g(H2) have been determined for irradiations performed with 60Co γ-rays source of LCP (Orsay, France) and with helium ion beams (Eα=5.0MeV-64.7MeV) using protective agent bromide anions in solution. The α (4He2+) irradiation experiments were performed either at CEMHTI or at the new ARRONAX cyclotron facility (2010). Both sources (γ and cyclotrons) allow working with a large LET value range between 0.23 and 151.5keV/μm. On one hand, the obtained results have been compared with those available in the literature and plotted as a function of the LET parameter in order to discuss the effects of track structure on the production of molecular hydrogen. On the other hand, the primary radiation chemistry yield g(H2) values are compared with global radiation chemical yields G(H2) obtained during irradiations of pure water irradiated under air or argon without scavenging. For each system, it appears that radiation chemical yields increase with the LET value. Our results suggest that using bromide anions, at low concentration, as a protective agent becomes ineffective when the LET value used is higher than 120±20keV/μm.

AB - Radiation chemical primary yields g(H2) have been determined for irradiations performed with 60Co γ-rays source of LCP (Orsay, France) and with helium ion beams (Eα=5.0MeV-64.7MeV) using protective agent bromide anions in solution. The α (4He2+) irradiation experiments were performed either at CEMHTI or at the new ARRONAX cyclotron facility (2010). Both sources (γ and cyclotrons) allow working with a large LET value range between 0.23 and 151.5keV/μm. On one hand, the obtained results have been compared with those available in the literature and plotted as a function of the LET parameter in order to discuss the effects of track structure on the production of molecular hydrogen. On the other hand, the primary radiation chemistry yield g(H2) values are compared with global radiation chemical yields G(H2) obtained during irradiations of pure water irradiated under air or argon without scavenging. For each system, it appears that radiation chemical yields increase with the LET value. Our results suggest that using bromide anions, at low concentration, as a protective agent becomes ineffective when the LET value used is higher than 120±20keV/μm.

KW - Alpha irradiation

KW - Gamma irradiation

KW - LET parameter

KW - Molecular hydrogen radiation chemical yield

KW - Scavenging efficiency

KW - Water radiolysis

UR - http://www.scopus.com/inward/record.url?scp=84870370037&partnerID=8YFLogxK

U2 - 10.1016/j.radphyschem.2012.07.010

DO - 10.1016/j.radphyschem.2012.07.010

M3 - Article

AN - SCOPUS:84870370037

SN - 0969-806X

VL - 82

SP - 74

EP - 79

JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

IS - 1

ER -

LET effects on the hydrogen production induced by the radiolysis of pure water

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this