Abstract
A torsional type antenna with a diameter of 310 mm, which is the maximum size of an extruded aluminium alloy bar commercially available, is developed for gravitational experiments at low temperature. The antenna shows a very long relaxation time of an externally excited oscillation; τ = 1.78 × 10 5 s corresponding to Q = 3.30 × 10 7 at liquid helium temperature. The decay characteristic is studied over a few relaxation periods to confirm a single exponential decay at small oscillation amplitude. An amplitude dependent loss is observed above a certain oscillation level at low temperature. The dynamic character of the antenna is studied between room temperature and liquid helium temperature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
