On the Electric Breakdown in Liquid Argon at Centimeter Scale

We present a study on the dependence of electric breakdown discharge properties on electrode geometry and the breakdown field in liquid argon near its boiling point. The measurements were performed with a spherical cathode and a planar anode at distances ranging from 0.1 mm to 10.0 mm. A detailed study of the time evolution of the breakdown volt-ampere characteristics was performed for the first time. It revealed a slow streamer development phase in the discharge. The results of a spectroscopic study of the visible light emission of the breakdowns complement the measurements. The light emission from the initial phase of the discharge is attributed to electro-luminescence of liquid argon following a current of drifting electrons. These results contribute to set benchmarks for breakdown-safe design of ionization detectors, such as Liquid Argon Time Projection Chambers (LAr TPC).

The breakdown of IRS tax enforcement regarding multinational corporations : revenue losses, excessive litigation, and unfair burdens for U.S. producers : hearing before the Committee on Governmental Affairs, United States Senate, One Hundred Third Congress, first session, March 25, 1993.

Shipping list no.: 93-0404-P.

The effects of intense gamma irradiation on electric breakdown in helium /

"Physics Development Department, Tracerlab, Incorporated, Reactor Monitoring Center."

Performance of concrete pavements containing recycled concrete aggregate /

"March 1997."

Aggregate auto travel forecasting: state of the art and suggestions for future research. Final report.

Transportation Department, Office of the Assistant Secretary for Systems Development and Technology, Washington, D.C.

Earth and aggregate surfacing design guide for low volume roads /

"September 1996."

Investigation of manufacture of aggregate and riprap by nuclear means /

"Issued: February 1965."

Fine aggregate sources location and geologic characteristics : phase 1 of Physical Research project no. 9 "acceptability tests for fine aggregates" : a report /

Maps in pocket comprise appendix C, Geologic characteristics of fine aggregate sources, and appendix D, Fine aggregate source locations.

Present aggregate gradation control practices and alternative test methods /

Mode of access: Internet.

Performance of electric and microwave batch plant moisture meters in determining the moisture contents of fine-aggregate materials for concrete production /

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Soil aggregate formation /

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Theories of aggregate income distribution.

Mode of access: Internet.