Radiation detectors : can these be used for prospecting
 

Here is a link to radiation detectors, you can make at home.
Possibly searching/prospecting for radioactive material?
http://www.techlib.com/science/ion.html
'Sensitive homemade ion chambers for detecting nuclear radiation are fairly easy to build but the circuitry is tricky and should only be attempted by "seasoned" experimenters - the currents are likely to be well below 1 pA unless there is a serious nuclear war in progress! (The simple version is "beginner friendly"!) Special electronics is needed at the front end, typically called an "electrometer" circuit, which produces an output voltage in proportion to the input current. The electrometer must have a very low bias or leakage current to avoid masking the desired signal and the intrinsic impedance of the amplifier must be extremely high. The input impedance of the electrometer may be fairly low, however, using feedback to convert the tiny current into a usable voltage.'

You forgot to post the link. :frown:

Corrected.........

I think, with terrorists around trying to make dirty bombs, these can help warn us of the radio active material ;-)

The links has been posted.

:lol:
He must have updated the post after my reply. ;)

Radiation detectors : can these be used for prospecting
 

for gold projects i use spectrometers to geophysically map out the alteration zones

Hi All
This simple Gamma ray detector perhaps it's usefull to investigate if buried gold it can emit something in gamma range:

http://www.edn.com/article/CA292206.html


Best Regards

By sufficient Gamma radiation you can even convert your mercury fillings into gold, so do not need detector anymore.