Subtraction of the background and automatic peak identification in gamma- ray spectra obtained from a Ge(Li) detector

Journal Article · Sat Dec 15 04:00:00 EST 1973 · Nucl. Instrum. Methods, v. 113, no. 4, pp. 483-487

DOI:https://doi.org/10.1016/0029-554X(73)90742-8· OSTI ID:4368279

Volkov, N G

The identification of the peak area of gamma -ray spectra, obtained from a Ge(Li) detector, was made by means of a X/sup 2/-test in the spectra, from which the background had already been subtracted. Preliminary subtraction of the background was done by a special procedure, similar to the process of differentiation in electrtonic circuits. After this operation the slow changing component was cut off, which corresponds to the subtraction of the background. The small residual background is similar to zero level restoration by a diode. This subtracting procedure does not use any information about peaks in the spectrum. After subtraction of the background, the identification of the peak area was made on the basis of counting rate deviation from zero. Then additional subtraction was done after identification. For this purpose the background in the peak area was represented by a polynomial of the third order, satisfying the boundary conditions at the end points of the peak. (auth)

• Research Organization: Inst. for Physical and Chemical Research, Yamato, Japan
• NSA Number: NSA-29-012808
• OSTI ID: 4368279
• Journal Information: Nucl. Instrum. Methods, v. 113, no. 4, pp. 483-487, Journal Name: Nucl. Instrum. Methods, v. 113, no. 4, pp. 483-487; ISSN NUIMA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*GAMMA SPECTROMETERS-- DATA PROCESSING
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LI-DRIFTED GE DETECTORS
PEAKS