Effect of low-level radiation on the low temperature acoustic behavior of a-SiO2.
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.
Nazaretski
E
E
Cornell Center for Materials Research, Cornell University, Ithaca, New York 14853, USA.
Merithew
R D
RD
Kostroun
V O
VO
Zehnder
A T
AT
Pohl
R O
RO
Parpia
J M
JM