Application of thin layer activation technique to study surface erosion of D9 stainless steel during laser ablation process
The thin layer activation (TLA) technique has been applied to study the surface erosion of D9 stainless steel (D9 SS) by producing a thin layer (~430 µm) of 56Co activity using 15 MeV proton beam. The cumulative ablation thickness of 90 µm in D9 SS, observed against total deposited laser energy of ~20 kJ, is reported here. The minimum detection limit was found to be ~50 nm in the measurement of surface loss of material by TLA technique. No surface loss could be detected when D9 SS was exposed to laser fluence pre-requisite for its efficient decontamination.
KeywordsD9 stainless steel Mixed oxide fuel Radiotoxicity Thin layer activation Laser ablation Surface erosion
We sincerely acknowledge the support of cyclotron staff for the availability of ion beam to carry out the irradiations. We are also grateful to Dr. B. N. Jagatap, Director, Chemistry Group, Dr. K. Dasgupta, Associate Director, Beam Technology Development Group and Dr. A. V. R. Reddy, Head, Analytical Chemistry Division, BARC, for their support and encouragement. We thank Dr. A. Kumar, AFFF, BARC, Tarapur, for providing the D9 SS samples. One of the authors (BS) acknowledges University Grants Commission for research fellowship and University of Kerala for granting deputation to BARC.
- 4.Kumar A, Bhatt RB, Afzal Md, Pannakkal JP, Biswas DJ, Nilaya JP, Das AK (2013) Laser assisted decontamination of fuel pins for prototype fast breeder reactors. Nucl Technol 182(2):242–247Google Scholar
- 6.Takacs S (2010) Thin layer activation (TLA) technique for wear measurement. http://www-nds.iaea.org/tla
- 8.Hokkaido University Nuclear Reaction Data Centre (JCPRG). http://www.jcprg.org/exfor/. Accessed 1 May 2015
- 9.Ziegler JF, Ziegler MD, Biersack JP (2008) The stopping and range of ions in matter, SRIM—Version 2008.04. www.SRIM.org. Accessed 5 May 2015