Deuterium:
Amazon sells them, cheapest $350:
http://www.amazon.com/Azzota-D2-Lamp-Deuterium-Lamps/dp/B005HBCCOE/ref=sr_1_2?s=industrial&ie=UTF8&qid=1325576299&sr=1-2
And lots on Alibaba (this one says $28-$82, min 10 pcs):
http://www.alibaba.com/product-gs/213893905/deuterium_lamp.html
Xenon:
Description: 400 watt 450/500 volt 80050 Ultraviolet Projector / Stage
/ Studio Incandescent Eiko Flash Tube
$33.79
http://www.amazon.com/Eiko-80050-WK140HD-UV-Projector-Light/dp/B001HXKOB4
So what's it take to power one of these things? For DNA purposes
coordinated flashes would be sufficient, but I've heard the timing
interface is tough for syncing with a CCD. Does that mean
constant-duty operation would be required, does turning the bulb on
and off reduce lifespan of it? While 150W Xenon may do the job, it
will be big and hot... the smaller the light source is, the better.
It seems like deuterium lamps are definitely the smoothest light curve
if you want to keep cool and do 200-250nm very nicely, but Xenon flash
looks more than sufficient for DNA, protein, etc:
http://www.photonics.com/images2/Website/2010/2010-10/HamamatsuFig1.jpg
--
Nathan McCorkle
Rochester Institute of Technology
College of Science, Biotechnology/Bioinformatics
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