摘要:

A sample‐manipulator attachment to a UHV angle‐resolving photoemission system is described which permits the sample to be rotated azimuthally and to be transported to a LEED/Auger optics. The manipulator may be assembled from readily available commercial parts.

ISSN:0034-6748    

DOI:10.1063/1.1136189

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

We describe the design, fabrication, and utilization of a simple sample cell for extended x‐ray absorption fine structure (EXAFS) measurements at elevated temperature. The cell is rigid, inert, easy to fabricate, cheap and effective in maintaining the critical specimen dimensions of both solid and liquid samples up to 1000 °C.

ISSN:0034-6748    

DOI:10.1063/1.1136190

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

A simple discharge lamp with a microwave cavity fitting inside provides an intense source of VUV resonance radiation for photochemical work inside a vacuum chamber. Good coupling and minimum reabsorption result in better efficiency (≳1%) and more intense output power (up to 2.5×1016quanta s−1) than have been achieved previously.

ISSN:0034-6748    

DOI:10.1063/1.1136191

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

This device filters any desired subset of frequencies from a multiple‐frequency laser without reducing substantially either the power in the remaining frequencies or the optical quality of the reconstructed beam. It should be useful in multiple‐frequency laser photochemistry and the probing of multiple‐frequency laser media.

ISSN:0034-6748    

DOI:10.1063/1.1136192

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

A new type of V block is described. It is constructed from separate elements and is suitable for use with heavy loads. Its accuracy is the same as conventional monolithic V blocks while its cost is much lower than that of commercial precision V blocks.

ISSN:0034-6748    

DOI:10.1063/1.1136193

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

Some modifications of the electric circuitry are described for the apparatus of the internal friction measurement of thin wire specimens; the apparatus has been developed by Franklinetal. The improved apparatus has been successfully used in the internal friction measurements of cold‐worked vanadium specimens.

ISSN:0034-6748    

DOI:10.1063/1.1136194

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

We report a measurement of the absolute efficiency of a Johnston Laboratories MMl electron multiplier for detection of 2–4 keV Ne+. The measured detection efficiency depends both on ion impact energy and on the magnitude and direction of an externally applied electric field near the first dynode.

ISSN:0034-6748    

DOI:10.1063/1.1136195

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

A simple inexpensive scheme of an electronic amplifier for Wheatstone bridge application is presented. The bridge is excited from a bilateral constant current square wave source. The advantage of constant current drive is presented.

ISSN:0034-6748    

DOI:10.1063/1.1136196

出版商:AIP    

年代:1980

数据来源: AIP

摘要:

A small gas filling apparatus has been developed to fill a particle beam ICF target with D–T gas mixture seconds before the target is irradiated. Included in the filling apparatus is a novel miniature pressure monitor which determines quantitatively the fill pressure by counting the rate of Beta particles emitted by the decaying tritium atoms.

ISSN:0034-6748    

DOI:10.1063/1.1136197

出版商:AIP    

年代:1980

数据来源: AIP