Preliminary tests of a newly developed superconducting gravity gradiometer
Author(s)
Author(s)
Moody, M. V.
Paik, H. J.
Date Issued
1983
Publisher
IEEE
Journal
IEEE Transactions on Magnetics
Volume
19
Issue
3
Start page
461
End page
464
Abstract
We have recently completed a series of tests on a newly developed superconducting gravity gradiometer consisting of two 400 g niobium proof masses separated by a distance of 15 cm. The resonance frequency of the proof mass suspension systems is 25 Hz. The sensitivity of this gradiometer obtained during these tests was 1 to 2 Eötvös Hz -1/2 (1 Eötvös = 10 -9 s -2 \equiv1 E) below 1Hz, and 0.2 E Hz -1/2 between 15 and 20 Hz. Using this gradiometer, a prototype experiment has been performed to demonstrate a new source-independent null test of the inverse square law of gravitation. The result, assuming a potential of the form \phi(r) = -(GM/r) [1 + \alpha \exp(-\mur)] , is α = + 0.024 ± 0.036 at μ -1 = 1m.
SFU Affiliated Publication
No
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