Special problems involved in liquid scintillation counting: standardization of $sup 87$Y and $sup 67$Ga

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Nucl. Instrum. Methods, v. 112, no. 1-2, pp. 137-141

DOI:https://doi.org/10.1016/0029-554X(73)90787-8· OSTI ID:4411786

Steyn, J

S>The problems caused by non-coincident gamma -radiation and internal conversion electrons in the standardization of the electron-capture nuclides /sup 87/Y and /sup 67/Ga are discussed. Determination of the disintegration rate by 4 pi X- gamma coincidence counting with use of the liquid scintillation counter as 4 pi -detector is described. Impulses caused by internal-conversion electrons and gamma -rays in this counter are rejected by suitable pulse-height selection. The accuracy of the method depends on a knowledge of the intensities of the gamma -rays and the efficiency of the liquid scintillation counter for these rays. (auth)

• Research Organization: NPRL, Pretoria
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-004378
• OSTI ID: 4411786
• Journal Information: Nucl. Instrum. Methods, v. 112, no. 1-2, pp. 137-141, Journal Name: Nucl. Instrum. Methods, v. 112, no. 1-2, pp. 137-141; ISSN NUIMA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*GALLIUM 67-- GAMMA SPECTRA
*GAMMA SOURCES-- CALIBRATION
*YTTRIUM 87-- GAMMA SPECTRA
COINCIDENCE METHODS
LIQUID SCINTILLATION DETECTORS
N46110 --Instrumentation--Radiation Detection Instruments--General Detectors & Monitors
N72300* --Physics (Radiation & Shielding)--Radiation Source Calibration & Standardization