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Investigation of RF Radiation as a Secondary Phenomenon for Use in Checkout.

AD619899

Publication Date	1965
Personal Author	Ballard, J. W.; Horn, E. F.
Page Count	2
Abstract	The emission of radio-frequency (rf) radiation was studied over a range of frequencies from .15 to 400 megacycles per second (Mc/sec) for small gaps of .5 to 10 mils. The electrodes were .050-inch in diameter with polished plane ends which formed the gap. Most of the work reported was done in air at atmospheric pressure with nickel electrodes although argon gas and gold, aluminum, and copper electrodes were employed. Considerable attention was given to shielding, and the effect of receiver and generator circuitry. The effect of antennas and cables were also studied in relation to rf radiation emission and reception. Radiation from malfunctioning systems is attributed to a brush type discharge across very small discontinuities within the electrical parts. These discontinutities in a number of cases were found to be essentially contact, i.e. less than a few thousand angstroms. The mechanism causing breakdown was found to be the avalanche type with the involvement of secondary electronic emission.
Keywords	Electronic equipment Electric discharges Radiofrequency pulses Malfunctions Checkout procedures Field emission Electric arcs Sparks Secondary emission
Corporate Authors	Systems Research Labs Inc Dayton Ohio
Document Type	Technical Report
Title Note	Final technical documentary rept.
NTIS Issue Number	196519
Contract Number	AF33 615 1489

Investigation of RF Radiation as a Secondary Phenomenon for Use in Checkout.

Investigation of RF Radiation as a Secondary Phenomenon for Use in Checkout.
AD619899

Publication Date	1965
Personal Author	Ballard, J. W.; Horn, E. F.
Page Count	2
Abstract	The emission of radio-frequency (rf) radiation was studied over a range of frequencies from .15 to 400 megacycles per second (Mc/sec) for small gaps of .5 to 10 mils. The electrodes were .050-inch in diameter with polished plane ends which formed the gap. Most of the work reported was done in air at atmospheric pressure with nickel electrodes although argon gas and gold, aluminum, and copper electrodes were employed. Considerable attention was given to shielding, and the effect of receiver and generator circuitry. The effect of antennas and cables were also studied in relation to rf radiation emission and reception. Radiation from malfunctioning systems is attributed to a brush type discharge across very small discontinuities within the electrical parts. These discontinutities in a number of cases were found to be essentially contact, i.e. less than a few thousand angstroms. The mechanism causing breakdown was found to be the avalanche type with the involvement of secondary electronic emission.
Keywords	Electronic equipment Electric discharges Radiofrequency pulses Malfunctions Checkout procedures Field emission Electric arcs Sparks Secondary emission
Corporate Authors	Systems Research Labs Inc Dayton Ohio
Document Type	Technical Report
Title Note	Final technical documentary rept.
NTIS Issue Number	196519
Contract Number	AF33 615 1489