Determination of peak area

Nuclear spectrometry of 9.6 h 196Aum2 and the reaction of 197Au with fast neutrons

“…Photon spectra were processed with the GAMANAL code [98][99][100], or by histogram analysis in the event of low statistics [34,35]. In histogram analysis, the background under the photopeak of interest is established graphically and subtracted from the sum of the data in Figure 5.…”

“…Even so, the application of inadequate decay intensity information in the calculation of the 196 Au m2 content has created problems both in the interpretation of 196 Au m2 / 196 Au g as a potential diagnostic of capsule performance and for certain exotic physical processes [32,33]. In the weaker signal debris collections produced at lower capsule yields fielded in the direction of the hohlraum laser entrance holes, the uncertainty in the determination of γ-ray intensities has a stronger contribution from the subtraction of the continuum than from the number of counts in the photopeak [34,35]. This means that deficiencies in the decay intensity information can create a systematic bias in comparisons of the 196 Au m2 concentrations resulting from low-and high-yield fusion experiments, or in comparisons of collections of varying efficiency arising in the same experiment.…”

A simple method for activity determination of 134Cs and 137Cs in foodstuffs using NaI(Tl) scintillation spectrometer

“…NaI(Tl) scintillation spectrometers may play important roles in the screening stage, and fast and accurate processing of the relevant spectra is required. There are many kinds of analysis methods for peak area determination in gamma spectrometry (Kokta, 1973). If the peak is obtained from well separated gamma lines, each peak area can be determined by a simple integration between the lower and the upper limits, and the contribution of the underlying continuum can be evaluated from the counts in the upper and lower channels of the peak area.…”

Optimal integration window for peak area estimation

“…They have been extensively discussed and compared in the literature (see for instance refs. [2][3][4][5][6][7][8][9][10]. In this paper we deduce simple analytical expressions which determine the optimal window width for integration methods in terms of two experimental conditions (signal to background ratio and background).…”