Calculate the energy spread of the Fe-57 first excited state

AI Thread Summary
The discussion focuses on calculating the energy spread of the Fe-57 first excited state, which has an energy of 14.4 keV and a lifetime of 141 ns. The relevant equation is Γτ = ħ, leading to the conclusion that Γ can be calculated as Γ = ħ/τ. Participants express confusion about the relevance of the energy value provided, questioning if it plays a role in the calculation. Ultimately, it is clarified that the lifetime alone is sufficient to determine the energy spread, confirming the simplicity of the question. The thread concludes with acknowledgment of the straightforward nature of the problem.
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



\Gamma\tau=\hbar

The Attempt at a Solution



No idea what this is really asking me. is it really just
\Gamma=\frac{\hbar}{\tau}
assuming it's not because it gave the energy...
 
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Is the energy used in any follow-up question?
Otherwise, I think it is irrelevant. Lifetime alone gives the energy spread.
 
nope, it was a single question. Guess it was a trick. Thanks.
 
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