APPARATUS FOR MEASURING RADIO-ACTIVE EMISSIONS

A method of and apparatus for measuring radio-active emissions from moving radio-active material. Use is made of a radiation detector, a first radiation shield of a first material which shields the detector, and a second radiation shield which is located between at least a portion of the first shiel...

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Bibliographische Detailangaben
Hauptverfasser:	RALF CARSTEN BOHME, MAX MORRIS LAZERSON
Format:	Patent
Sprache:	eng
Schlagworte:	MEASUREMENT OF NUCLEAR OR X-RADIATION MEASURING PERFORMING OPERATIONS PHYSICS POSTAL SORTING SEPARATING SOLIDS FROM SOLIDS SORTING SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A method of and apparatus for measuring radio-active emissions from moving radio-active material. Use is made of a radiation detector, a first radiation shield of a first material which shields the detector, and a second radiation shield which is located between at least a portion of the first shield and the detector. The material of the second shield is inherently less contaminated and emits secondary excitation radiation of lower energy than the first material.