Difference between revisions of "Cf-252 FTC-CFZ-431"
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| Line 12: | Line 12: | ||
| − | Formula used for neutron rate: | + | Formula used for neutron rate [<math>s^{-1}</math>]: |
<math>k=(0.5)^{\frac{(year-1993)+\frac{month-3}{12}}{2.645}}</math> | <math>k=(0.5)^{\frac{(year-1993)+\frac{month-3}{12}}{2.645}}</math> | ||
| Line 18: | Line 18: | ||
<math>n_{0}rate=9.835\times10^6\times k</math> | <math>n_{0}rate=9.835\times10^6\times k</math> | ||
| − | and for Cf-252 activity: | + | and for Cf-252 activity [<math>\mu Ci</math>]: |
| − | <math> | + | <math>activity=2283.3\times k</math> |
[[2nCor 44|Go back]] | [[2nCor 44|Go back]] | ||
Revision as of 00:56, 28 December 2016
Overview
An official document for the CF-252 source with serial number FTC-CFZ-431 provides a value for the neutron rate and CF-252 mass as of 03/19/1993.
The initial neutron rate and mass of cf-252 are stated to be and 4.2, respectively.
4.2 would generate neutrons per second. The discrepancy between these two numbers gives a 2% error.
Calculation
Click here to open a table giving neutron rates and C-252 activity from dates 1/2017 to 12/2029. This calculation only includes neutrons from Cf-252, since all other daughter nuclei and possible impurities have a very low SF rate compared to Cf-252.
Formula used for neutron rate []:
and for Cf-252 activity []: