Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A Hyperfine structure transition of Cs-133: calculation?

  1. May 5, 2016 #1
    I'm looking for the theoretical calculation of the hyperfine structure transition frequency of Ca-133 which is used in atomic clocks to define the second according to SI-Units. Google, Google... there is a lot about the hyperfine Hamiltonian of hydrogen, but couldn't find none about that of Ca-133. I would like to see how that famous 9,192,631,770 Hz frequency which defines our earthly time standard is calculated through theory. Can anyone help?
     
  2. jcsd
  3. May 5, 2016 #2

    blue_leaf77

    User Avatar
    Science Advisor
    Homework Helper

    I think it should be Caesium not Calsium.
     
  4. May 5, 2016 #3
    Opss... You are right, Cs-133... not Ca. Thanks.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted