Thread: Mossbauer Effect in Iron-57 View Single Post

## Mossbauer Effect in Iron-57

1. The problem statement, all variables and given/known data
Calculate the Doppler velocity needed to compensate for the recoil energy.

2. Relevant equations
$V=\frac{E_{0}}{m c}$

3. The attempt at a solution
I found the recoil energy to be $1.95\times10^{-3}$ eV.
And for Iron-57, $E_{\gamma}$ is 14.4KeV. Which is approximatly equal to $E_{0}$.
So just plugging these values into the above equation, I get 81.27m/s which seems a bit high, as many articles site around 10mm/s!

Perhaps units I am using should be in something else? Or maybe I am using the completely wrong equation?

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