CR-39 Research, Nuclear Track Testing

On this page are my results as i was testing the CR-39 plastic as a  Nuclear Track detection system.

I needed a way to detect if there was any Nuclear decay in my low temp LENR Experiments.

Its Quite simple and with some trial and error i was able to get Clear results and some good data from my testing.


In this video I show you the method i used in my Solid State Nuclear Track Detector. Using CR-39 plastic one can see the tracks being created as partials decaying from a Nuclear reaction.

I started by exposing the CR-39 plastic to a americium source for 3 min. Because the tracks are extremely small we need to etch the plastic so we can see the tracks with the optical microscope. For Etching I tried the "standard" 6 hrs etching time with 6M NaOH @ 80c and found that it was just way to long.

I then went back and set up the experiment slightly better and more controlled. I covered the americium source with AL foil and poked a pin hole in it. Then covering the source with a metal plate and suspending the CR-39 plastic about 5 mm above the source, exposing the disk for 1 min.

The goal was to achieve a more controlled exposure. For etching i used the same 6M NaOH @ 80c but this time Iexposed the disk's for 30min, 60min, 90min, and 120min. This way I could find the best time for etching and get the best results.


more information here in theses PDF's

The failed results:

some photos from the PDF.

3 min exposed and eched 2

3 min exposed and eched 5

3 min exposed and eched 7

The good results:

some photos from the PDF.

5x SNAP-095255-0033200x dic SNAP-094158-001950x dic SNAP-094158-001550x dic SNAP-095042-0024

Anyone can do this its Cheep and simple Nuclear decay detector.

Comments and Questions are welcome over at the Forums.

see more LENR research at the MAIN PAGE

This was also published on

There is a lot of other good information there if our interested in Cold Fusion.

Thanks for checking it out!

~Russ Gries