摘要:

A sample cell for optical studies of fluids is described.

ISSN:0034-6748    

DOI:10.1063/1.1134144

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

Satisfactory operation of the Blumlein type nitrogen laser was obtained by using a water‐filled spark gap. The water‐filled spark gap uses flowing water, and the Blumlein circuit is charged by a Marx‐bank driver.

ISSN:0034-6748    

DOI:10.1063/1.1134145

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

A modification to a previously described automatic Bragg angle control (ABAC) comparator circuit is described that makes it compatible with a General Electric SPG‐3 ratemeter.

ISSN:0034-6748    

DOI:10.1063/1.1134146

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

The described device permits continuous, prolonged cooling by sequencially switching LN2demand from an empty tank to a full one after complete depletion of the first tank.

ISSN:0034-6748    

DOI:10.1063/1.1134147

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

Because of their small mass (and heat capacity), metal film resistors are found to be suitable for low temperature applications. A technical improvement in thermal conductivity measurements was made possible by their use as sample heaters.

ISSN:0034-6748    

DOI:10.1063/1.1134148

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

Kerr cells driven by 50 &OHgr; impedance circuits are generally risetime limited due to the capacitance of the cell. Faster risetimes may be achieved with lower impedance circuits. However, the lower the impedance, the more reflections occur at the localized elements and the higher the electric fields in the insulation. These two technical difficulties have been overcome here forZ0=1.5 &OHgr; andZ0=2.5 &OHgr; characteristic impedance parallel plate transmission lines. An impedance matched distributed resistance provided a reflection‐free termination for the circuit.

ISSN:0034-6748    

DOI:10.1063/1.1134123

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

Flyer plate shock wave tests were used to evaluate the influence of using an intermediate copper electrodeposited coating on A286 stainless steel prior to plating to final thickness with nickel. Neither varying the copper plating solution (cyanide or pyrophosphate) nor the deposit thickness from 0.008 to 0.084 mm affected the adhesion as measured by this work.

ISSN:0034-6748    

DOI:10.1063/1.1134149

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

A simple trap current regulated ion source power supply for an isotope ratio mass spectrometer has been built, consisting mainly of commercially available voltage power supplies. Short term stability of 0.01% has been obtained with this system.

ISSN:0034-6748    

DOI:10.1063/1.1134119

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

A dynamic high pressure seal is described which operates successfully for numerous cycles to 7 kilobar at liquid nitrogen temperature with helium gas as the pressure medium.

ISSN:0034-6748    

DOI:10.1063/1.1134120

出版商:AIP    

年代:1975

数据来源: AIP

摘要:

A simple glow discharge source of H−ions has been built that has the advantages but not the disadvantages of the hot cathode type. The maximum stable current produced by this source was 8.8×10−9A. The source was also found to produce stable currents of H+, H2+, and H3+at the same order of magnitude as that of the H−ions.

ISSN:0034-6748    

DOI:10.1063/1.1134121

出版商:AIP    

年代:1975

数据来源: AIP