Cf-252 FTC-CFZ-431: Difference between revisions
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4.2 <math>\mu g</math> would generate <math>9.67 \times 10^{6}</math> neutrons per second. The discrepancy between these two numbers gives a 2% error. | 4.2 <math>\mu g</math> would generate <math>9.67 \times 10^{6}</math> neutrons per second. The discrepancy between these two numbers gives a 2% error. | ||
=Calculation= | |||
Click [[Cf-252 rates table|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. | Click [[Cf-252 rates table|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: | |||
<math>(9.835\times10^6\times(0.5)^(\frac{(year-1993)+\frac{month-3}{12}}{2.645})</math> | |||
[[2nCor 44|Go back]] | [[2nCor 44|Go back]] | ||
Revision as of 00:52, 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 [math]\displaystyle{ 10^{7}s^{-1} }[/math] and 4.2[math]\displaystyle{ \mu g }[/math], respectively.
4.2 [math]\displaystyle{ \mu g }[/math] would generate [math]\displaystyle{ 9.67 \times 10^{6} }[/math] 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:
[math]\displaystyle{ (9.835\times10^6\times(0.5)^(\frac{(year-1993)+\frac{month-3}{12}}{2.645}) }[/math]