Thorium mantle calibration run

[sgt_bear]

Hi,

Today i tried to run a spectrum on a mantle to get the detecors linearity.
It turned out my detector is quite linear up to 1000keV, after that i had to adjust the equalizers of theremino to get the spectrum in line.

Here is the full image of the spectrum:

Mantle1.png

and here a zoomed up version of the high energy part:

Mantle2.png

The unmarked bump at 2100-2300 keV could be Bi-212?.
The Peak on 2600 is possibly Tl-208


Regards
Jonathan

[Sesselmann]

Jonathan,

Did you look at the sample spectrum here http://www.gammaspectacular.com/gamma_s ... 2-spectrum

Steven