Radon measurement with DIY track detectors

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Radon: origin, health effects, measurements, Marco Silari, CERN:


Playing with Radioaktiviät - cool.

Alpha particles form the gas or liquid shoot holes in the plastic, then you develop it to make the hole bigger. Take CR-39 Plastic (from laser googles ?) etch it with 7M NaOH, 70°C for 5h ?

1 M NaOH is 40g

NaOH is commonly used to develop photo-resist when making DIY printed circuit boards... so we should have some in the lab.

PMMA/Acryl should work as well...

Can we use the DVD laser scanner to see the holes?

And could we use a DVD as detector material (Polycarbonat)? And how about modifying a DVD player to read the holes? And using old CDs or DVDs from a cellar to determine the radon concentration? Make it a community science project?

People have looked into this before: Application of polystyrene films for indoor radon dosimetry as SSNTD

Radon mapping by retrospective measurements – an approach based on CDs/DVDs

echt geil

How about Electrochemical etching or Ultrasonic etching?

Let's try and meet at SDG Solution Space in Geneva for "Open Hackuarium 228 "Sans les murs" #2, Spécial Genève"


HotPlateUltrasonic.jpg NaOH.jpg

Hmm... did not work. No traces.

Let's try again.

Electrochemical etching with 15 kV AC/cm, 40 kHz.

Electrochemical etching studies of the CR-39 plastic ElectrochemicalEtchingAparatus.png

Getting the CR39 from ebay, it's cheap. (Look for "CR39 welding") CR39.jpg


Measurement of Radon Gas Concentrations in Tap Water for Baghdad Governorate by Using Nuclear Track Detector (CR-39)