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

Information about absorption cross section

  1. Apr 3, 2015 #1
    Hydrogen - Halpha cross section
    i need the absorption cross section for the absorption of an H-alpha photon by a hydrogen atom, in the correct state of course, which i'm pretty sure is neutral hydrogen, n=2.
    I am needing this for a project, so i also need a reliable source where this comes from.
    Thanks beforehand and friendly regards,
  2. jcsd
  3. Apr 8, 2015 #2
    I don't have the value for you, but I usually use the NIST database for atomic information. Try at http://www.nist.gov/pml/data/asd.cfm , the Lines section appears to have also transition probabilities.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Information about absorption cross section
  1. Cross section (Replies: 3)