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Recalibration of Q Capability Indications from Infrared Measurements on Cultured Quartz,
SAWYER (BALDWIN) CRYSTALS INC GATES MILLS OH
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The calibrated formula reported in Sawyer 721 that predicts Q capability from measurements of extinction coefficients at 3500 1 cm has been re-examined on a broader basis. Quartz samples from four growers have been measured for infrared transmittances at the three wave numbers 3585, 3500, and 3410, using most of the suggestions in Brice and Cole 782. In addition, matched pieces of each of the samples were made into Warners design 5-MHz fifth-overtone resonators by one or more of five manufacturers for Q-measurement use.
APPROVED FOR PUBLIC RELEASE