We have sent the ATL laser from our Photon Machines LA system back to the manufacturer for refurbishment a couple of times due to low output by the time it has reached about 60 million shots. Each time, the energy has been fully restored and the laser has worked perfectly for another 60 million shots or so. (The newer ATL lasers have a solid-state pulser, instead of a thyratron, and, I believe, are good for more than 60 million shots between refurbishments).
213 nm lasers will produce excellent craters in most materials but the laser energy will not be as efficiently absorbed by colourless transparent minerals as 193 nm laser radiation. So there may be a few more minerals for which it is difficult to get controlled ablation and clean pits than with a 193 nm system.
I hope this helps.
Dr. Simon Jackson
Inorganic Geochemistry Research Laboratory (IGRL)
Geological Survey of Canada / Commission géologique du Canada
Natural Resources Canada / Ressources naturelles Canada
601 rue Booth St., Ottawa
Ontario, K1A 0E8
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telephone / téléphone
- office: (613) 996-2301
- lab: (613) 943-1287
From: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's). [mailto:[log in to unmask]] On Behalf Of Brätz, Helene
Sent: March 30, 2017 03:50
To: [log in to unmask]
Subject: laser ablation unit
currently we are busy searching for a new laser ablation unit which will be connected to an Agilent 7500c ICPMS. Right now we are using an esi 193FX unit in order to ablate geological samples, mainly silicates, sulfides and oxides in thin sections. The craters produced by the esi 193FX are extremely smooth apart from those of quartz and fluorite. Unfortunately our system is slowly but surely approaching the end of its lifetime unless the laser cavity gets refurbished.
Has anyone experience in that kind of 'refurbishing' of a laser-system, how reliable is it and how long will the new laser unit last ?
Alternatively we are interested in buying a new 213 nm laser: whats your experience with the 213nm laser unit ? Does it produce reasonable craters ? There are several providers on the market, whats your experience ?
Thank you very much for your efforts !
dr Helene Brätz
fon. 09131 85 22700
fax. 09131 85 23734
mail. [log in to unmask]