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Re:DIY High Resolution Spectrometer (2018) by sylware on Monday May 16, 2022 @07:11AM (#31395567)
... and soon a small x-ray spectrometer? (even though this is illegal in most countries since x-rays are really dangerous).
Re:DIY High Resolution Spectrometer (2018) by CamperBob2 on Monday May 16, 2022 @11:47PM (#31405825)
It's easy enough to generate x-rays, for better or worse, but the devil's in the details. The x-rays apparently need to be monochromatic, or nearly so, so you can't just apply HV to any old random radio tube that's lying around. And then you need a beryllium exit window on the tube and another one at the detector entrance.

Fascinating teardown on one of these things at Ben Krasnow's channel https://www.youtube.com/watch?v=KdfHVcU8U7U .