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

Hg:L-S coupling or j-j coupling?

  1. Apr 8, 2013 #1
    When testing Bohr's theory by Franck-Hertz experiment, we have electrons colliding with Hg atoms. a Hg atom will absorb electron's energy when this energy can make it jumping to a higher energy level. I wonder Hg is more like L-S coupling or j-j coupling, for I want to measure its higher excited state by accelerating electrons faster.
    By the way, I have known that L-S coupling is effected when residual electrostatic is far lager than spin-orbit interaction.

    Thank you!
  2. jcsd
  3. Apr 8, 2013 #2

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor
    2016 Award

    There are both LS and j-j transitions in Hg I. For example, the 253.7 nm line is LS-forbidden but j-j allowed, and is in fact one of the brightest spectral lines.

    NIST maintains a comprehensive searchable online database:

  4. Apr 10, 2013 #3
    Thank you!That database is very useful!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Hg:L-S coupling or j-j coupling?
  1. EV to J (Replies: 24)

  2. A couple of questions (Replies: 6)

  3. Coupled Oscillations (Replies: 13)

  4. Psi to J? (Replies: 10)