- #1
richyw
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Homework Statement
Calculate the energy spread of the 57Fe first excited state, which has energy 14.4 keV and lifetime 141 ns.
Homework Equations
[tex]\Gamma\tau=\hbar[/tex]
The Attempt at a Solution
No idea what this is really asking me. is it really just
[tex]\Gamma=\frac{\hbar}{\tau}[/tex]
assuming it's not because it gave the energy...