NDLI: Interaction of laser radiation with TNT with respect to the laser neutralisation of AP mines

Content Provider	Springer Nature Link
Author	Rothacher, T. Lüthy, W. Weber, H.P.
Copyright Year	2001
Abstract	According to UN estimations there are between 80 and 115 million activated landmines worldwide. These mines, or other unexploded ordnance (UXO), can be triggered accidentally and kill or injure more than 2000 civilians per month. The most common explosive in these mines is trinitrotoluene (TNT). In this paper, the potential of some of the most promising lasers for mine neutralisation is investigated, namely an ArF laser, a KrF excimer laser and a Nd:YAG solid-state laser. We have studied the interaction between laser beams emitting at λ=193 nm, 248 nm and 1060 nm and a bare solid sample of TNT of approximately 15 mg. Using pulsed excimer radiation at λ=193 nm, with an energy density up to 1 J/mm2, ablation of the TNT without any deflagration has been achieved. At λ=248 nm, using the KrF excimer laser with a pulse duration of 30 ns and a repetition rate of 5 Hz, the TNT sample started melting and burning after an irradiation of 10 s. Preliminary results with the Nd:YAG solid-state laser operating in cw emission have shown that the irradiated sample exhibits the desired burning behaviour even after the exposure is stopped.
Starting Page	133
Ending Page	136
Page Count	4
File Format	PDF
ISSN	09478396
Journal	Applied Physics A
Volume Number	73
Issue Number	2
e-ISSN	14320630
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-08-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Science

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