Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I'll start with the background so perhaps you can understand my problem better.

I want to write some requirements for diffraction with electrons.

I know that typically an electron diffraction pattern would need ~1e6 electrons, I could justify this because I also know (and can show that) an image needs 1e8, and a diffraction pattern uses about 100 times less pixels or the beam is 100 times less spread out.

However I started trying to understand the diffraction process a little more, and I figured it should be possible to calculate the intensity of the diffraction peaks and then I could say something about how many electrons, and the have lots of nice information about the angles etc.

It seems a little worthless to try and calculate the intensities of an electron diffraction pattern as all the books say the intensities vary too much with thickness etc.

However because X-rays scatter much less their intensities can be reasonably well calculated and I can find example calculations.

--I guess that X-ray diffraction patterns and electron diffraction patterns are similar enough that if I can use one to make justifications about the other (on at least an order of magnitude level).--

So I have all the peaks and intensity for a KCL powder difrraction, great, But what I can not get however is the zero order peak intensity, where nearly 100% of the signal goes.

Does anyone have any suggestions on this?

I don't really want to have to use a computer program, as it's nice to have easily manipulatable analytical equations?

Thanks for your

Help!

Ben

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Calculating Diffraction Intensities

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads for Calculating Diffraction Intensities |
---|

I Question about Powder X-ray diffraction experiment |

A How to recover wavefunction at all K points? (ab initio calculations for periodic systems) |

A How to calculate the degeneracy of an energy band? |

A Calculating asymptotic behavior of a correlation function |

**Physics Forums | Science Articles, Homework Help, Discussion**