摘要:

A transistorized circuit particularly designed as an output indicator for linear variable differential transformers is given. It is relatively simple to construct, adjust, and operate. The advantages of a phase‐sensitive detector for the measurements of small displacements is discussed. Resolution of the unit is about 0.05 &mgr;; the linearity is about ¼%.

ISSN:0034-6748    

DOI:10.1063/1.1717151

出版商:AIP    

年代:1961

数据来源: AIP

摘要:

A dual‐diode microwave switch providing in excess of 100‐db switched attenuation with low insertion loss is described. Switching time of the device, limited by the diodes, is 3×10−7sec. Application of the switch in a 9000‐Mc superheterodyne magnetic resonance spectrometer as a mixer crystal protector and as a microwave signal blanker is described.

ISSN:0034-6748    

DOI:10.1063/1.1717152

出版商:AIP    

年代:1961

数据来源: AIP

摘要:

A simulator for an ion gun is used to predict the ion trajectories in the gun for a given electrode geometry. One simulator control is used for the space charge simulation of the entire ion beam. The beam is divided into cells of different areas in such a manner that each cell has the same space charge. Potential measurements are made at the boundaries of the cells where the accuracy of the space charge simulation is the greatest. A trajectory plotter is described which consists of a miniature tricycle, a voltage balancing unit (the same unit used in dc milli‐volt recorders), a dc regulated power supply, and a number of resistors. The trajectories are found by ``steering'' the tricycle across the simulator. The trajectory plotter and the method of space charge simulation were checked experimentally and were found to have good accuracy.

ISSN:0034-6748    

DOI:10.1063/1.1717153

出版商:AIP    

年代:1961

数据来源: AIP

摘要:

Very strong hermetic seals can be made to quartz crystals using a hydride of titanium or zirconium and a solder composed of copper‐bearing lead or indium.

ISSN:0034-6748    

DOI:10.1063/1.1717154

出版商:AIP    

年代:1961

数据来源: AIP

摘要:

A cold cathode gas discharge ion pump has been used as a leak detector and found to operate satisfactorily. Argon, helium, oxygen, and hydrogen have been used effectively as probe gases with argon usually giving the greatest response. Leaks from 10−3to 10−8std cc/sec could be located in a few minutes and leaks as small as 10−10std cc/sec or 10−7&mgr;liter/sec could be detected.

ISSN:0034-6748    

DOI:10.1063/1.1717155

出版商:AIP    

年代:1961

数据来源: AIP

摘要:

A tilting specimen holder for the Hitachi H. U. 10 electron microscope is described. Its usefulness in transmission studies of the fine structure of metal foils is illustrated.

ISSN:0034-6748    

DOI:10.1063/1.1717156

出版商:AIP    

年代:1961

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1717158

出版商:AIP    

年代:1961

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1717160

出版商:AIP    

年代:1961

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1717161

出版商:AIP    

年代:1961

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1717162

出版商:AIP    

年代:1961

数据来源: AIP