Laser assisted decontamination of metal surface: Evidence of increased surface absorptivity due to field enhancement caused by transparent/semi-transparent contaminant particulates

Nilaya, J. Padma; Biswas, Dhruba J.

doi:10.1016/j.apsusc.2009.10.021

Cited by 12 publications

(1 citation statement)

References 11 publications

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“…The conventional techniques used for the cleaning of the fuel element surfaces have a general disadvantage because of the possibility of exposure to personnel and generation of large volume of secondary radioactive waste. Pulsed laser-assisted removal of loose radioactive particulates from the surface of both metallic [1][2][3][4][5][6][7] and dielectric [4,6,7] substrates is gaining popularity as it has decided advantages over the conventional methods of cleaning. First, the volume of the secondary waste generated can be reduced to a significant extent here as an appropriate selection of the laser parameters such as its fluence and pulse duration can confine the interaction of the laser with the substrate to a restricted volume [3,4,8].…”

Section: Introductionmentioning

confidence: 99%

Laser-assisted cleaning: Dominant role of surface

Nilaya

Biswas

2010

Pramana - J Phys

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Pulsed laser-assisted removal of particulates from substrates has decided advantages over the conventional methods of cleaning. Experiments conducted with loose contamination on metal and transparent dielectric surfaces proved conclusively the dominant role played by the absorption of the incident radiation by the surface towards the generation of the cleaning force as against the absorption in the particulates alone. Further, the presence of transparent/semi-transparent particulates on a metal surface was found to result in an increased absorption of the incident radiation by the substrate. This effect, identified as field-enhanced surface absorption was found to increase with reduction in the average particulate size.

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