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Date: Wed, 9 Apr 1997 10:05:00 -0500 (CDT)
From: "C. Darren Dowell"
Subject: sparo bolometers
I made 20 bolometers for SPARO. They will be coming up to Yerkes with
David this evening. For the record, this is the recipe:
* 1 mil NbTi wire with Cu jacket; ~20 mil of jacket etched away.
* NTD Ge 10 thermistors, 250 um x 250 um x ~300 um
* thermistors etched about 20 seconds in mysterious acid etch from Yerkes
* indium solder ball used to attach thermistor to leads; about 3-5 mil
diameter for each face
With the light angle right, it's pretty easy to see the bare NbTi part of
The approximate thermal conductance should be 1 nW/K, but I would be
interested to hear an independent measurement of that.
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