AJAC  Vol.3 No.1 , January 2012
Chemical Dosimetry during Alpha Irradiation: A Specific System for UV-Vis in Situ Measurement
Abstract: This paper is devoted to the study of the potentiality of the Fricke dosimeter for the characterization of the highly energetic (62.1 MeV) α particles beams generated by a new cyclotron facility, namely ARRONAX started in 2009. Such for this high energetic α beam, in situ dosimetry is performed in order to avoid radiation safety inconvenience and to earn run time of irradiation. Therefore, an in situ Fricke dosimetry protocol is developed and its reliability is checked by comparison with other experiments carried out by using the traditional method (ex situ Fricke dosimetry) within another cyclotron facility (CEMHTI) and by comparison with literature data. To author’s knowledge, it is the first time that Fricke dosimetry is performed during the α irradiation experiment. The results of these in situ dosimetry experiments show that the value of ferric ions radiolytic yield (G(Fe3+) = (11.7 ± 1.2) 10–7 mol?J–1) extrapolated from literature data can be used for this higher energy of α particles (Eα = 62.1 MeV).
Cite this paper: C. Costa, J. Vandenborre, F. Crumière, G. Blain, R. Essehli and M. Fattahi, "Chemical Dosimetry during Alpha Irradiation: A Specific System for UV-Vis in Situ Measurement," American Journal of Analytical Chemistry, Vol. 3 No. 1, 2012, pp. 6-11. doi: 10.4236/ajac.2012.31002.

[1]   H. Fricke and E. J. Hart, “Chemical Dosimetry, Radiation Do-simetry,” In: F. H. Attix and W. C. Roesch, Eds., Aca- demic Press, New York, 1966.

[2]   R. W. Matthews, “Aqueous Chemical Dosimetry,” The International Journal of Applied Radiation and Isotopes, Vol. 33, No, 11, 1982, pp. 1159-1170. doi:10.1016/0020-708X(82)90241-1

[3]   A. R. Anderson and E. J. Hart, “Molecular Product and Free Radical Yields in the Decomposition of Water by Protons, Deuterons, and Helium Ions,” Radiation Research, Vol. 14, No. 6, 1961, pp. 689-704. doi:10.2307/3571010

[4]   Z. D. Draganic and I. G. Draganic, “The Radiation Chemistry of Water,” Academic Press, 1971, New York, USA.

[5]   J. A. LaVerne and R. H. Schuler, “Rad-iation Chemical Studies with Heavy Ions: Oxidation of Ferrous Ion in the Fricke Dosimeter,” Journal of Physical Chemistry, Vol. 91, No. 22, 1987, pp. 5770-5776. doi:10.1021/j100306a050

[6]   M. Matsui, H. Seki, T. Kara-sawa and M. Imamura, “Radiation Chemical Studies with Cyc-lotron Beams, (I) Fricke Solution,” Journal of Nuclear Science and Technology, Vol. 7, No. 2, 1970, pp. 97-104. doi:10.3327/jnst.7.97

[7]   R. D. Saini and P. K. Bhattacharyya, “Radiolytic Oxidation of U(IV) Sulphate in Aqueous Solution by Alpha Particles from Cyclotron,” International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, Vol. 29, No. 5, 1987, pp. 375-379. doi:10.1016/1359-0197(87)90009-9

[8]   R. H. Schuler and A. O. Allen, “Radiation Chemistry Studies with Cyclotron Beams of Variable Energy: Yields in Aerated Ferrous Sulfate Solu-tion1,” Journal of the American Chemical Society, Vol. 79, No. 7, 1957, pp. 1565-1572. doi:10.1021/ja01564a012

[9]   J. Steyn and D. Van As, “Radiolytic Oxidation of Ferrous Solutions with Standardized Internal Sources of Polonium-210,” Nature, Vol. 191, No. 4791, 1961, pp. 903- 904. doi:10.1038/191903a0

[10]   A. Samouilov, V. Roubaud, P. Kuppusamy and J. L. Zweier, “Kinetic Analysis-Based Quanti-tation of Free Radical Generation in EPR Spin Trapping,” Ana-lytical Biochemistry, Vol. 334, No. 1, 2004, pp. 145-154. doi:10.1016/j.ab.2004.07.026

[11]   M. Anton, “Development of a Secondary Standard for the Absorbed Dose to Water Based on the Alanine EPR Dosimetry System,” Applied Radiation and Isotopes, Vol. 62, No. 5, 2005, pp. 779-795. doi:10.1016/j.apradiso.2004.10.009

[12]   B. Pastina and J. A. LaVerne, “Hydrogen Peroxide Production in the Radiolysis of Water with Heavy Ions,” The Journal of Physical Chemistry A, Vol. 103, No. 11, 1999, pp. 1592-1597. doi:10.1021/jp984433o