At 03:34 PM 10/14/2012, Axil Axil wrote:
http://www.bubbletech.ca/radiation_detectors_files/bubble_detectors.html
No etching required on this product; real time response. This
product may be easier to use than CR39.
In some ways. However, I'm not sure how sensitive it is to neutrons.
The flux in that video was pretty high, with only an occasional
bubble popping up. Still, this would be a nice test.
It seems that a bubble detector may be purchased for something in the
range of $200, according to one source. (another source said $700 for
three). They are guaranteed to work for three months; but the author
of the paper said he had one that was still working after two years.
(Bubble detectors have a pressure screw that allows increasing the
pressure till the bubbles disappear. It's supposed to be stored in
this position. To "turn it on," the pressure is relieved, which
causes the contained drops of working liquid to become superheated
and sensitive to neutrons.)
They certainly seem nifty, and they will accumulate bubbles for some
time (don't know how long), and the bubbles are immediately visible.
However, for comparison, I sell a 9x12 cm sheet of LR-115 for $30. I
cut it into 72 pieces for my kits, 1x1.5 cm. (If you want to buy 25
sheets from Dosirad, you can get them for roughly half of that each,
as I recall.)
