摘要:

Time jitter in a rotary spark gap is greatly reduced by use of a simple triggering scheme. Triggering permits accurately timed single‐pulse and pulse‐burst operation, as well as repetitive pulsing.

ISSN:0034-6748    

DOI:10.1063/1.1686837

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

A single‐turn toroidal optimization of the inductor in the LC circuit of a capacitive displacement transducer is described. It has a higher Q than the usual multiturn coil and allows the construction of a rigid LC resonator which does not use any insulators. When this resonator is used in conjunction with a tunnel diode oscillator, the sensitivity of the capacitor to position changes is conservatively estimated as 7×10−12cm.

ISSN:0034-6748    

DOI:10.1063/1.1686838

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

An instrument is described that determines the magnitude of an electric field over a surface by lowering an elevated, grounded, metal point until a corona current ceases to flow from it. Measurements with this apparatus in New Mexico indicate that the maximum thunderstorm electric field over the water surface of a reservoir is considerably larger than that usually encountered over land surfaces.

ISSN:0034-6748    

DOI:10.1063/1.1686839

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

A fast recovery post‐amplifier for pulsed NMR application using a limiter in its feedback circuit is described. The baseline is restored immediately after the pulse. Dead time is 2 &mgr;sec.

ISSN:0034-6748    

DOI:10.1063/1.1686840

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

We report on a variety of useful applications of photodiode arrays in on‐line diagnostics of pulsed lasers. These diagnostics include beam cross section monitoring and psec‐pulse duration monitoring.

ISSN:0034-6748    

DOI:10.1063/1.1686841

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

An inexpensive electronic interface which controls the flow of a phase‐detected signal from a slow‐scan Michelson interferometer to a signal averager is described. This interface is designed to add the advantages of signal averaging techniques to an existing slow scan interferometer system which employs phase sensitive detection and time constant averaging.

ISSN:0034-6748    

DOI:10.1063/1.1686842

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

A description is given of three concentric rotating vacuum seals employing reentrant geometry.

ISSN:0034-6748    

DOI:10.1063/1.1686843

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

An electrode system using sapphire for the low conductivity measurement under hydrostatic pressure below 5000 bar is described. The leakage resistance of this design is 1.3×1016&OHgr; at 1000 bar, and 6×1014&OHgr; at 4000 bar.

ISSN:0034-6748    

DOI:10.1063/1.1686844

出版商:AIP    

年代:1974

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1686846

出版商:AIP    

年代:1974

数据来源: AIP