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Cuttoff frequwncy for an x-ray tube

  • #1
How would you calculate the cutoff frequency of an x-ray tube operating at 44kV? I am using frequency = work function/h. I have (44000eV x 1.602E-19J)/1.626E-34 but my answer is wrong. I'm thinking that I converted kV to eV incorrectly, but I'm not sure.
Thanks.
 

Answers and Replies

  • #2
hage567
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How would you calculate the cutoff frequency of an x-ray tube operating at 44kV? I am using frequency = work function/h. I have (44000eV x 1.602E-19J)/1.626E-34 but my answer is wrong. I'm thinking that I converted kV to eV incorrectly, but I'm not sure.
Thanks.
Your value for Planck's constant is wrong (that 1 should be a 6). Does that fix it?
 
  • #3
Your value for Planck's constant is wrong (that 1 should be a 6). Does that fix it?
Yes. Thanks for pointing out my stupid mistake :) Sometimes it just takes a fresh set of eyes.
 

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