Effect of low-level radiation on the low temperature acoustic behavior of a-SiO2 |
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| Authors: | Nazaretski E Merithew R D Kostroun V O Zehnder A T Pohl R O Parpia J M |
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| Institution: | Cornell Center for Materials Research, Cornell University, Ithaca, New York 14853, USA. |
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| Abstract: | We report on the mechanical behavior of an a-SiO2 84 kHz torsional oscillator operated between 100> or =T> or =1.0 mK. Below 10 mK we observed well-differentiated transient responses which we attribute to the interaction with low-level background radiation (gamma quanta and cosmic ray micro) and which can be modeled in terms of a change in the spring constant. |
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