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A device is proposed with which ions may be selected on account of their oscillating frequency in a static ``potential well'' whereby the ions pass several times across the same rf field tuned to the oscillation, thus gaining energy on each passage. No magnetic fields are used. As the initial...
A sampling oscilloscope is described with a 10 to 90% rise time of 5.6×10 −10 sec. Maximum useful sweep speed is about 10 −10 sec∕in.; maximum useful sensitivity about 15 mv∕in. These are limited solely by the peak time jitter of 2×10 −11 sec, and apparent input peak noise of about...
The transient containment of high magnetic energy densities in coils of various geometries is discussed. Inherent mechanical and thermal limitations are shown to apply to coils relying solely on the strength of materials. The usefulness of inertial effects is demonstrated. Instrumentation is...
A convenient electromechanical instrument has been developed to take the place of sets of sensitive hydrometers in measuring liquid densities. The range covered by the particular design is 0.8000 to 1.0000 and could be extended without impairing its accuracy. Temperature‐controlled liquid...
A fast gray wedge analyzer for operation at input pulse rates up to 10 7 per second has been designed and built. Circuits and operation of the instrument are described. Operation of the instrument depends on two trigger circuits which are initiated by the input pulse. Pulses of fixed amplitude...
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