Difference between revisions of "NKS-B GammaTest:Exercise spectra and instructions"
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| − | == Identification of radionuclides in sewage sludge and on a contaminated film dosimeter == | + | == Identification of radionuclides in ''sewage sludge'' and on a ''contaminated film dosimeter'' == |
The task in (a) and (b) below is to report at least all identified nuclides - perfect solution includes the identification of all significant peaks, including background peaks i.e. no background subtraction. | The task in (a) and (b) below is to report at least all identified nuclides - perfect solution includes the identification of all significant peaks, including background peaks i.e. no background subtraction. | ||
All the relevant spectra are here: [http://www.gr.is/wp-content/media/2013/06/Spectra-for-calibration.zip.zip Sewage sludge and contaminated film dosimeter] | All the relevant spectra are here: [http://www.gr.is/wp-content/media/2013/06/Spectra-for-calibration.zip.zip Sewage sludge and contaminated film dosimeter] | ||
Latest revision as of 10:59, 5 June 2013
Contents
Identification of radionuclides in sewage sludge and on a contaminated film dosimeter
The task in (a) and (b) below is to report at least all identified nuclides - perfect solution includes the identification of all significant peaks, including background peaks i.e. no background subtraction. All the relevant spectra are here: Sewage sludge and contaminated film dosimeter
a) Sewage sludge
- Peak/nuclide identification exercise spectrum file: 12711G6.chn
- Sample: sewage sludge sample in 0.5 l Marinelli beaker
- Detector: coaxial, p-type HPGe detector, relative efficiency 39%
- Energy calibration options
- spectrum: calibG6.chn, certificate of calibration source: certif.txt (files attached)
- energy calibration equation: E = 0.3337 * ch – 0.183 (E= energy in keV, ch = channel)
- channel-energy –pairs:
- 140.2 – 46.54 keV
- 1531.4 – 511.0
- 4378.6 – 1460.8
- 7835.4 – 2614.5
b) Contaminated film dosimeter
- Peak/nuclide identification exercise; spectrum file: 11100B1.chn
- sample: contaminated film dosimeter
- detector: Canberra BEGe detector BE5030, relative efficiency 50%, thin entrance window,thin Ge dead layer
- energy calibration options
- energy calibration equation: E = 0.3305 * ch + 0.7301 (E= energy in keV, ch = channel)
- channel – energy -pairs:
- 67.7 – 23.1 keV
- 516.3 – 171.3
- 740.2 – 245.4
- 1258.3 – 416.6
Sample of water from the primary circuit of a research reactor
Distance from end-cap to sample container is appr. 2 mm, including 1 mm teflon. The sample container is centered on top of the end-cap. Additional information is included in the attached zip-file: Water from research reactor
- DetectorData.jpg - Relevant info about the detector
- VialData.jpg - Relevant info about the geometry (vial)
- CalibCertificate.txt - Calibration Certificate Table
- calA50006.Chn - Calibration spectrum
- bkgA50173.Chn - Background spectrum
- sampA50715.Chn - Sample spectrum (primary water from research reactor)
