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K alpha and K beta wavelengths

  1. Nov 9, 2012 #1
    1. The problem statement, all variables and given/known data
    Calculate the Kα and Kβ wavelengths for He and Li
    Ive seen https://www.physicsforums.com/showthread.php?t=118050 and the two websites that were given for tables, but I need to show calculations.


    2. Relevant equations
    K alpha Energy=10.2eV*(Z-1)2?

    E=hc/λ


    3. The attempt at a solution
    Ive tried using the above equations to find energy and thus wavelengths for He and Li k-alpha, but they dont match the values found from http://xdb.lbl.gov/Section1/Table_1-2.pdf and http://www.csrri.iit.edu/periodic-table.html says they have no wavelengths... I also have no idea how to calculate for k beta.
     
  2. jcsd
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