July 6, 2007 Neutron Capture in lead: Difference between revisions
Jump to navigation
Jump to search
| Line 8: | Line 8: | ||
[[Image:with_lead_without_CF_252_gamma_spectra500_900.jpg]]<br> | [[Image:with_lead_without_CF_252_gamma_spectra500_900.jpg]]<br> | ||
We have sharp peak on 803 keV, which is the result of the lead container. This line coressponds to thermal-neutron capture in lead Pb-206.[http://prola.aps.org/pdf/PR/v95/i6/p1482_1]. However, 388 kev and 333 kev, energy lines of Cf-249 are more dominant without lead.<br> | We have sharp peak on 803 keV, which is the result of the lead container. This line coressponds to thermal-neutron capture in lead Pb-206.[http://prola.aps.org/pdf/PR/v95/i6/p1482_1]. However, 388 kev and 333 kev, energy lines of Cf-249 are more dominant without lead.<br> | ||
For 803 keV <math>\ | For 803 keV <math>\frac{# of counts without lead}{# of counts with lead}</math> | ||
Revision as of 23:35, 11 July 2007
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. The source was Cf-252 without and with lead container of 60μCi activity.
1. Energy Region 100-500 keV
2. Energy Region 500-900 keV
We have sharp peak on 803 keV, which is the result of the lead container. This line coressponds to thermal-neutron capture in lead Pb-206.[1]. However, 388 kev and 333 kev, energy lines of Cf-249 are more dominant without lead.
For 803 keV [math]\displaystyle{ \frac{# of counts without lead}{# of counts with lead} }[/math]