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. 2013 Aug 19;118:301–352. doi: 10.6028/jres.118.015

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The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

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Fig. 47 — Sample heater powers H1 and H2 versus I_c for a set measurements on a Nb-Ti sample at 5 K, in gas, and on the VTS probe. The solid symbols indicate the average heater power before each V-I curve was taken and the open symbols indicate the average heater power during the time that the sample current was near I_c. T bias (T1−T2) was set to 60 mK, which allowed H2 to be lower without H1 going to zero.