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Thread: help with photon wavelength calculation

  1. #1 help with photon wavelength calculation 
    Forum Freshman
    Join Date
    Feb 2007
    Location
    cambridge, uk
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    An x-ray photon has a characteristic energy of 3.312KeV. determine its equivalent wavelength in nm.
    And the angle at which you would set a WD spectrometer containing a quartz dispersing crystal with an effective spacing of 3.343 angstroms.

    Im not sure where to even start with the 2nd part, but for the first i calculated 0.374nm with
    wavelength = hc/E

    but im getting confused with units, is this correct?


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