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Title: Preliminary tests of a newly developed superconducting gravity gradiometer
Author(s): Chan, Anthony Hing Hung 
Author(s): Moody, M. V.
Paik, H. J.
Issue Date: 1983
Publisher: IEEE
Journal: IEEE Transactions on Magnetics 
Volume: 19
Issue: 3
Start page: 461
End page: 464
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.
DOI: 10.1109/TMAG.1983.1062415
CIHE Affiliated Publication: No
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