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

  • Thread starter richyw
  • Start date
  • #1
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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...
 

Answers and Replies

  • #2
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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.
 
  • #3
180
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nope, it was a single question. Guess it was a trick. Thanks.
 

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