- #1
Rajini
- 621
- 4
hello all,
i wanted to calculate the illumination at counter using inverse square law..(not a home work problem)
In my case i have a flat radioactive source (not point source) with a surface area of [tex]\pi(2.5)^2[/tex]mm[tex]^2[/tex]. Source ([tex]^{57}[/tex]Co) strength is [tex]1.85\times 10^9[/tex]Bq. Half-life=272 days. Now what will be the flux arriving at the detector placed 300 mm far from the source?
Second question: To convert Ci to Bq, we just multiply by [tex]3.7\times10^{10}[/tex]. Is there any other conversion to convert Ci to some 'X' by dividing by 9 ??
If some one knows some links/url/notes for calculating the count rate please reply me..
I don't how to apply the inverse [tex]^2[/tex] law!
Thanks for your reply.
i wanted to calculate the illumination at counter using inverse square law..(not a home work problem)
In my case i have a flat radioactive source (not point source) with a surface area of [tex]\pi(2.5)^2[/tex]mm[tex]^2[/tex]. Source ([tex]^{57}[/tex]Co) strength is [tex]1.85\times 10^9[/tex]Bq. Half-life=272 days. Now what will be the flux arriving at the detector placed 300 mm far from the source?
Second question: To convert Ci to Bq, we just multiply by [tex]3.7\times10^{10}[/tex]. Is there any other conversion to convert Ci to some 'X' by dividing by 9 ??
If some one knows some links/url/notes for calculating the count rate please reply me..
I don't how to apply the inverse [tex]^2[/tex] law!
Thanks for your reply.