Difference between revisions of "Determination of Unknown Sample"
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− | [[Gamma Spectroscopy Analysis]] In table 3 the analysis results of the unknown, n-irradiated sample is shown. Use the results to : | + | [[Gamma Spectroscopy Analysis]] |
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+ | In table 3 the analysis results of the unknown, n-irradiated sample is shown. Use the results to : | ||
*Determine which metal the sample consist of. Use the identified <span class="texhtml">γ</span>-ray energies to do this. if you need a database you can use [http://nucleardata.nuclear.lu.se/nucleardata/toi/ this one] | *Determine which metal the sample consist of. Use the identified <span class="texhtml">γ</span>-ray energies to do this. if you need a database you can use [http://nucleardata.nuclear.lu.se/nucleardata/toi/ this one] |
Revision as of 10:56, 27 June 2012
In table 3 the analysis results of the unknown, n-irradiated sample is shown. Use the results to :
- Determine which metal the sample consist of. Use the identified γ-ray energies to do this. if you need a database you can use this one
- Determine the absolute amount of the metal. Use the counts measured in table 3 and theefficiency curve you made in exercise 3B. Use at least two different γ lines to do this, we recommend Eγ = 222.08 keV and Eγ 1 MeV. The neutron flux was 105 n/(s cm2) during the irradiation, and the irradiation time was 18 days. The sample was measured directly after the irradiation.
Photo Peak no. | Energy (keV | Net Count | Uncertainty | FWHM (keV |
1 | 67.63 | 166011 | 1885 | 0.44 |
2 | 100.26 | 79985 | 902 | 1.00 |
3 | 152.56 | 34987 | 401 | 1.16 |
4 | 222.08 | 29011 | 335 | 1.52 |
5 | 511 | 210890 | 2385 | 2.24 |
6 | 1121.14 | 32098 | 391 | 1.67 |
7 | 1188.7 | 14563 | 173 | 1.17 |
8 | 1221.28 | 23825 | 265 | 2.01 |