Radiation detectors : can these be used for prospecting

[Atul Asthana]

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.'

[Qiaozhi]

Originally Posted by Atul Asthana

Here is a link to radiation detectors, you can make at home.
Possibly searching/prospecting for radioactive material?

You forgot to post the link.

[Atul Asthana]

Corrected.........

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

[Esteban]

Originally Posted by Qiaozhi

You forgot to post the link.

The links has been posted.

[Qiaozhi]

Originally Posted by Esteban

The links has been posted.

He must have updated the post after my reply.

[Seden]

Atul,

Yes Gamma Scintillation detectors are the ticket for mineral prospecting in certain cases. For gold they are used to detect hardrock veins due to them surrounded by Radioactive potassium. This also applies to sulphide veins of gold as in the formation process pick up radioactive minerals.

The plans you linked to are not sensitive enough.

Randy

[ronjoly]

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