Figure 3 - uploaded by Kenneth Paul Moats
Content may be subject to copyright.
4: Gamma ray spectrum of a Pu-239 source with no additional shielding material (black curve) and the corresponding background spectrum (blue curve). Note that the spectra are normalized to the live-time of the Pu-239 spectrum (762.6 s).
Similar publications
Citations
... Given measurements of the net area of each peak, the live-time, detector efficiency, branching ratio and the source-detector distance, the measured activity is determined from Equation These calculations were implemented in an early version of the SAS software [4], and a more robust algorithm was later developed and tested [5]. Improvements to the code in Ref. [5] were implemented and these changes are discussed in Section 2 of this report. ...
... Given measurements of the net area of each peak, the live-time, detector efficiency, branching ratio and the source-detector distance, the measured activity is determined from Equation These calculations were implemented in an early version of the SAS software [4], and a more robust algorithm was later developed and tested [5]. Improvements to the code in Ref. [5] were implemented and these changes are discussed in Section 2 of this report. Results from testing the improved version of the SAS software are presented in Section 3, followed by a summary in Section 4. ...
... In the SAS software, as described in Ref. [5], the shielding factors were calculated using the mass attenuation coefficients for several shielding materials, varying their thicknesses as the minimization parameter. The best-fit parameters were then passed to a chi-squared minimization routine based on the Minuit code [6]. ...
