Change of chemical properties by neutron irradiation in boric acid solution

중성자 조사에 의한 붕산수의 화학특성 변화

  • Received : 2005.05.13
  • Accepted : 2005.06.28
  • Published : 2005.08.25

Abstract

The effect of neutron irradiation on the chemical properties was measured in boric acid solution. The pH of the solution decreased in proportion to the irradiation time and the concentration of boric acid. The concentration of hydrogen peroxide, which is one of the radiolysis products of water, is in proportion to the concentration of boric acid, while in inverse proportion to the irradiation time. The oxygen and hydrogen gases had same chemically equivalent ratio in water radiolysis. The lithiun, which comes from $^{10}B(n,{\alpha})^7Li$, had poor relationship with neutron irradiation time at low concentration, $233{\sim}699{\mu}g/mL$, of boric acid, but the relationship was improved at higher concentration.

Keywords

neutron irradiation;boric acid;hydrogen peroxide;radiolysis product

References

  1. D. Gavillet, M. Martin, J. Y. balnce, J. Thomazet and A. Miquet, 'Investigations of the Li and B distribution on in -pile irradiated Zr-4 and Zr- 1% Nb-O oxide layers', Chimie 2002, Avignon France, 22-26(2002)
  2. Chien C. Lin, F. R. Smith and R. L. Cowan, Nuclear Engineering and Design, 166, 31-36(1996) https://doi.org/10.1016/0029-5493(96)01196-X
  3. B. Pastina, J. Isabey and B. Hickel, Journal of Nuclear Materials, 264, 09-318(1999)
  4. P. A. Dokhale, V. N. Bhoraskar, P. R. Vijayaraghavan, Materials Science and Engineering B, 57, 1-8(1998) https://doi.org/10.1016/S0921-5107(98)00263-3
  5. R. L. Cowan, Independent Consultant, Livemore CA and C. J. Wood, EPRI, Palo Alto CA, 'Control of Radiation Fields in BWRs After Noble Metal Chemical Addition', Chimie 2002, Avignon France, 22-26 (2002)
  6. R. S. Lillard, D. L. Pile and D. P. Butt, Journal of Nuclear Materials, 278, 77-289(2000) https://doi.org/10.1016/S0022-3115(99)00248-2
  7. Francis Nordmann and Jean-Marie Fiquet, Nuclear Engineering and Design, 160, 193-201(1996) https://doi.org/10.1016/0029-5493(95)01097-1
  8. K. C. Choi, Y. J. lung, J. W. Yean and W. H. Kim, Analytical Science & Technology, 16, 443-449(2003)
  9. B. Stellwag, Framatome Anp Gmbh, M. Juergensen and Kemkraftwerk Biblis, 'Zinc Injetion in German PWR Plants', Chimie 2002, Avignon France, 11-18 (2002)
  10. M. Domae, N. Chitose, Z. Zuo and Y. Katsumura, Radiation Physics and Chemistry, 56, 15-322(1999)
  11. W. S. Walters, J. D. Page, A. P. Gaflka, A. F. Kingsbury, J. Foster, A. Anderson and Wicken, J. Henshaw, 'The effect of zinc addition on PWR corrosion product deposition on Zirca1oy-4', Chimie 2002, Avignon France, 22-26(2002)

Acknowledgement

Supported by : 과학기술부