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| VOLUME 28 (1978) | ISSUE 6 |
PAGE 356
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Possibility of producing a bulky supersensitive thermal detector at a temperature close to absolute zero
Neganov B.S., Trofimov V.N.
The possibility is discussed of using a large-mass system, cooled to infralow temperatures (<1 K) and insulated, as an ultrasensitive detector of energy-releasing interactions with fields and particles. The detectors register the change of the system temperature. The necessary condition for the realization of high sensitivity (10"22 W/g at Τ = 0.01 К) is a decrease of the inflow of parasitic heat due to mechanical vibrations, to electromagnetic induction, and to the cosmic and natural-radioactivity background. The principal results of an investigation at 1 К are reported. It is observed that the main obstacle to the development of the detector may be the reversible effect of thermal relaxation in the detector material after the cooling.
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![](/ps/1576/article_24160_800_head.png "<b>The possibility is discussed of using a large-mass system, cooled to infralow temperatures (<1 K) and insulated, as an ultrasensitive detector of energy-releasing interactions with fields and particles. The detectors register the change of the system temperature. The necessary condition for the realization of high sensitivity (10"<sup>22</sup> W/g at </b><i>Τ = </i><b>0.01 К) is a decrease of the inflow of parasitic heat due to mechanical vibrations, to electromagnetic induction, and to the cosmic and natural-radioactivity background. The principal results of an investigation at 1 К are reported. It is observed that the main obstacle to the development of the detector may be the reversible effect of thermal relaxation in the detector material after the cooling.</b>")