X‐ray gauge measures areal density variations as small as 0.1%

Autor:	David M. Stupin
Rok vydání:	1985
Předmět:	business.industry Chemistry Attenuation Resolution (electron density) Flux Surfaces and Interfaces Gauge (firearms) Condensed Matter Physics Collimated light Surfaces Coatings and Films Nuclear physics Optics Measuring instrument Area density business Image resolution
Zdroj:	Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 3:1266-1268
ISSN:	1520-8559 0734-2101
DOI:	10.1116/1.573080
Popis:	A gauge measures areal density variations as small as 0.1% in low density plastic foams and other materials. It has a spatial resolution of 0.5 mm. This system is safe, portable, easy to use, and is readily automated. The 6 keV x-ray flux from a /sup 55/Fe source is collimated to a 0.5 mm diameter beam and attenuated by the sample. Transmitted x-rays are detected with a proportional gas detector and counted with a scaler-timer. After measuring the x-ray attenuation in two areas of the sample, the areal density variation is calculated using an
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a97b6ea2f08a38e73bcf93564d390d04 https://doi.org/10.1116/1.573080 Zobrazit plný text záznamu