Method and apparatus for optimizing measurement of radioactivity of samples in scintillation type counter

Patent · Tue Jan 15 04:00:00 EDT 1974

OSTI ID:4329213

Frank, E

A method and apparatus for optinnizing the measurement of the radioactivity of samples in a scintillation type radioactivity counter in which successive samples are advanced into a counting chamber where the radioactivity of each sample is measured by detecting and counting the scintillations induced in s scintillation medium. In order to optimize the position of the sample relative to the scintillation detecting means, and thereby optimize measurement of the radioactivity of each sample, control means are provided for producing a command sigual representing a selected position of the sample relative to the scintillation medium. This control means includes adjusting means for automatically adjusting the stop position of the sample in response to each command signal so that the sample is automatically stopped at a position represented by the command sigral, and at which measurement of the radioactivity of the sample is optimized. Specific adjusting means disclosed include an adjustable limit switch an- d an adjustable wiper on a potentiometer, each of which controls the drive motor for raising and lowering successive samples rclative to a counting chamber. (Official Gazette)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-020934
• Assignee: to Packard Instrument Co., Inc.
• Patent Number(s): US 3786259
• OSTI ID: 4329213
• Country of Publication: United States
• Language: English

Related Subjects

*RADIOISOTOPES-- RADIOMETRIC ANALYSIS
*SOLID SCINTILLATION DETECTORS- - SAMPLE CHANGERS
AUTOMATION
N40130 --Chemistry--Analytical & Separations Chemistry--Radiometric & Radiochemical Procedures
N46110* --Instrumentation--Radiation Detection Instruments-- General Detectors & Monitors