Differential auger spectrometry

Radiant energy – Electron energy analysis

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250307, G01N 2304, G01N 23227

Patent

active

039653510

ABSTRACT:
Differential Auger spectroscopy method for increasing the sensitivity of micro-Auger spectroanalysis of the surfaces of dilute alloys, by alternately periodically switching an electron beam back and forth between an impurity free reference sample and a test sample containing a trace impurity. The Auger electrons from the samples produce representative Auger spectrum signals which cancel to produce an Auger test sample signal corresponding to the amount of the impurity in the test samples.

REFERENCES:
patent: 3626184 (1971-12-01), Crewe
patent: 3760180 (1973-09-01), Weber
patent: 3909610 (1975-09-01), Kokubo
"Difference Auger Spectroscopy for Studying Small Quantities of Elements on Metallic Surfaces," Varma et al., Review of scientific Inst., vol. 44, No. 11, Nov. '73, pp. 1643-1645, 250-305.

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