Attached is a simple experiment to expose the weak and reclusive spectra from Pa-234 and Pa-234m, the later being a key indicator of the presence of U238.
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- 21 Jun 2015, 08:13
- Forum: The lounge
- Topic: I gave up a lifetime supply of neutrons.
- Replies: 2
- Views: 4931
Geoff, that is truly a big decision, but I suspect you will enjoy your path forward. I have never regretted getting my degree in geology, even though at this point in my career I don't use it on the job much. I work and hike with other geologists, and our weekend fieldwork has been a real blast, int...
The sample amount is critical. I initially used just a few grams, then went to about 30 grams, at which point I was able to collect a spectrum after about an hour, but it was weak. Keep in mind my largest detector is a 40x40 mm NaI. I then went to a 100 gram sample, since it was inexpensive. Suppose...
Tom, you are correct, and that was fast! To obtain this spectrum you need a good size detector and sample, and a long run time, definitely the most challenging one I've done yet. I should mention that the peaks toward the lower end of the spectrum, below about 400 keV, are likely to be from Ac-227. ...