- #1
evilcman
- 41
- 2
Here are two exercises:
1. ) The proton radius is 0.8fm. What energy electron beam do you need for this resolution, if the target is liquid H2?
2.) A pion radius is 0,65fm. What energy pion beam do you need for this resolution by scattering on the electrons of a stationary target(pi-e scattering)? Why is the beam energy so different than in the previous exercise?
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Now, i guess the main point in both cases is that the dr Broglie wavelength of the bombarding particle is the best resolution one can achieve. But, if I just go with de Broglie wavelength = spatial resolution , then I get approx. 1,5GeV and 1,9GeV respectively, which is not that different, so I don't understand the necessity of the last question. Also, I don't think the target material is important. Can someone clarify this?
1. ) The proton radius is 0.8fm. What energy electron beam do you need for this resolution, if the target is liquid H2?
2.) A pion radius is 0,65fm. What energy pion beam do you need for this resolution by scattering on the electrons of a stationary target(pi-e scattering)? Why is the beam energy so different than in the previous exercise?
------
Now, i guess the main point in both cases is that the dr Broglie wavelength of the bombarding particle is the best resolution one can achieve. But, if I just go with de Broglie wavelength = spatial resolution , then I get approx. 1,5GeV and 1,9GeV respectively, which is not that different, so I don't understand the necessity of the last question. Also, I don't think the target material is important. Can someone clarify this?