What is the effect of laser on Nuclear track detector CR-39 ?

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Aleksandr A. Tarasov

Absolutely no any effect. There is no absorbtion at 632 nm. And the power of He-Ne laser is too low to expect any nonlinear effects. So you can try to use He-Ne laser for track visualisation.

Ahmed Rashad El-Sersy

Yes expose CR-39 to He Ne laser may effect on the bulk etch rate VB and so on the etching efficiency.

Sam Tripathy

Laser can affect the physico-chemical properties of CR-39, which one can measure by spectrophotometric techniques such as UV-Vis (where you can find band-gap from Tauc's plot), FTIR (to see the behaviour of functional groups).