232Thorium
Oct7-10, 05:24 PM
Can anyone recommend a white light source to be used in a cryostat down to 77 K? We are using it in temperature-dependent studies of PV devices. Currently we have an incandescent bulb which has shifted its spectrum towards red over time and we're looking for a replacement. It would be nice to have a solid-state source since the incandescent bulb obviously heats up quite a bit, but I don't know of any that work at such low temps.
It should be a small bulb, about the size of the middle segment of a finger. (Weird comparison, I know, but I was looking around my desk for something that people on the forum could relate to for size and this does the trick :smile:.)
We'd eventually like to run a solar simulator hooked up to fiber optics to get the light down the cryostat, but for now we're looking for a new bulb as a temporary fix. Thanks!
It should be a small bulb, about the size of the middle segment of a finger. (Weird comparison, I know, but I was looking around my desk for something that people on the forum could relate to for size and this does the trick :smile:.)
We'd eventually like to run a solar simulator hooked up to fiber optics to get the light down the cryostat, but for now we're looking for a new bulb as a temporary fix. Thanks!