Method and apparatus for detecting flaws in transparent bodies c

Details Method and apparatus for detecting flaws in transparent bodies c Method and apparatus for detecting flaws in transparent bodies c

1991-01-04

1992-05-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2504721, G01N 2188

Patent

active

051171201

ABSTRACT:
Method and apparatus for measuring energetic, heavy ionizing particles, such as .alpha.-particles and protons in gaseous surroundings by scanning a transparent plate that had been exposed to radiation and then subjected to chemical etching with a focused laser light beam, and counting by means of computerized counting means laser light pulses emerging at the edge of the plate in consequence of total internal reflection of laser light scattered by radiation-induced etching pits.

REFERENCES:
patent: 3652863 (1972-03-01), Gaskell et al.
patent: 3770962 (1973-11-01), Fleischer et al.
patent: 3988068 (1976-10-01), Sprague
patent: 4401893 (1983-08-01), Dehuysser
patent: 4808813 (1989-02-01), Champetier
patent: 4841139 (1989-06-01), Schmalfuss et al.

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