Difference between revisions of "June 25,2007 Cf-252 measurements of total gamma-spectrum using HpGe ungated"
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| − | + | =Data= | |
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| − | + | <br> | |
| − | + | Paraffin wax layer of thickness 12.6 cm was used as a neutron attenuator and for cosmic rays lead of thickness 10 cm on sides of <br>HpGe detector. Total time of the run was ~9 hours. Total number of counts: 11,157,085. The source was Cf-252 (activity 60μCi)<br> | |
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| − | + | ==1. Energy region 0-1000 keV== | |
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| + | [[Image:jun25_Cf_paraffin1.jpg|400px]]<br> | ||
| + | ==2. Energy region 1000-2000 keV== | ||
| − | [[Image: | + | [[Image:jun25_Cf_paraffin2.jpg|400px]]<br> |
| − | <math>\sigma</math>= | + | ==3. Energy region 2000-3000 keV== |
| − | [[Image:gaussian2.jpg]]<br> | + | |
| − | [[Image:gaussian3.jpg]]<br> | + | [[Image:jun25_Cf_paraffin3.jpg|400px]]<br> |
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| + | = Fits to selected spectra= | ||
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| + | ==Lead-214 line== | ||
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| + | [[Image:gaussian1.jpg|400px]]<br> | ||
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| + | <math>\sigma=0.42+/-0.011</math> keV<br> | ||
| + | Max Energy shift=19.7 keV<br> | ||
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| + | ==Potassium-40 line== | ||
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| + | [[Image:gaussian2.jpg|400px]]<br> | ||
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| + | <math>\sigma=0.49+/-0.07</math> keV<br> | ||
| + | Max Energy shift caused by doppler effects should be 96.5 keV<br> | ||
| + | |||
| + | ==Thantalum-128 line== | ||
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| + | [[Image:gaussian3.jpg|400px]]<br> | ||
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| + | <math>\sigma=0.98+/-0.04</math> keV<br> | ||
| + | Max Energy shift caused by doppler effects should be 172.81 keV<br> | ||
Latest revision as of 00:50, 23 October 2007
Data
Paraffin wax layer of thickness 12.6 cm was used as a neutron attenuator and for cosmic rays lead of thickness 10 cm on sides of
HpGe detector. Total time of the run was ~9 hours. Total number of counts: 11,157,085. The source was Cf-252 (activity 60μCi)
1. Energy region 0-1000 keV
2. Energy region 1000-2000 keV
3. Energy region 2000-3000 keV
Fits to selected spectra
Lead-214 line
keV
Max Energy shift=19.7 keV
Potassium-40 line
keV
Max Energy shift caused by doppler effects should be 96.5 keV
Thantalum-128 line
keV
Max Energy shift caused by doppler effects should be 172.81 keV