Dosimeter Detector Plastic Cr39 PADC

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Dosimetry Detectors Dosimetry Detectors

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The best way to find out more about our dosimetry plastic is to order samples. We will manufacture low volumes of your sheets or detectors so that you can carry out tests.

We will make sure the samples match your exact specifications. Contact us here to get started...

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We sell our material to countries all over the world so do not hesitate to contact us if you are not from the UK.

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Dosimetry Detectors

What Is Dosimeter Plastic?

PADC (polyallyl diglycol carbonate) also known as CR-39 is a thermoset resin that is commonly used as optical plastic for display applications and is also a particularly sensitive etched-track detector for personal neutron and radon dosimetry. A detector using this kind of PADC plastic is commonly referred to as an Alpha Track Detector.

*Image courtesy of Public Health England

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How Does It Work?

When PADC dosimeters are exposed to thermal or fast neutrons and radon gas decay products, the path of the particle through the dosimeter plastic is marked by a track of broken polymer bonds. Electrochemical or caustic etching of the dosimeter plastic allows microscopic detection of the tracks and etch pit counting and data analysis is used to obtain dosimetry counts.

Radon Dosimeters

Long term exposure to radon increases your risk of cancer, in particular lung cancer. Radon produces a radioactive dust that is inhaled and trapped in our airways. This in turn emits radiation that damages the inside of our lungs.

Our radon dosimeters (also known as radon dosemeters) are used inside passive radon detectors. The detectors are placed in areas at risk of radon exposure and left for a period of time (typically 3 months). During this time the surface of the radon dosimeter plastic will be marked and pitted by radioactive particles. After the period of time is completed the radon dosimeter plastic is etched and then analysed under a microscope and the pits measured and counted. The more pitted and damaged the plastic the higher the exposure to radon.

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Neutron Dosimeters

Our neutron dosimeter plastic (also known as neutron dosemeter plastic) is used in the detection of thermal, epithermal and fast neutrons. It is insensitive to other radiations (gamma, X and beta), is relatively unaffected by heat and humidity and has a very low radon sensitivity. Typically worn as a badge for personal neutron dosimetry the plastic is damaged by charged particles which create tracks across it's surface. In personal neutron dosimetry these charged particles are mostly protons that are produced in interactions between the neutrons and the nuclei of the PADC.

As with radon dosimetry the neutron detector badges are worn over a period of time after which they are etched and all pits and tracks automatically counted by microscope.

Specific advantages of our neutron dosimetry plastic are:

Other Applications

Neutron and radon dosimetry are two of the main applications of our plastic, however it is also used in other applications such as plasma physics, laser physics, uranium research, astronomy, radiography and teaching. If you have a specific application that requires bespoke material please contact us and we will be happy to work with you.

Sizes Available

Mi-Net Technology Dosimeter Grade PADC is available as sheets or fabricated detector elements at high dimensional tolerance to customer specification. Thickness typically ranges from 0.5-1.5mm and other thicknesses are available on request. Detector and sheet size are produced to customer specification. We can produce both low and high volumes so if you would like to buy dosimeter plastic please get in touch with us to discuss your requirements further.

Laser Engraving

We can supply dosimetry plastic that has been laser engraved to high tolerances. You can provide us with instructions and we will work to your specification, or we can make our own recommendations.

Sample Material

Dosimeter plastic is a technical product and we know how important it is to have confidence in the material you are using. To help build confidence with our customers we always start by sending sample material for analysis. This ensures that the material recipe is optimal and if we are cutting or laser engraving it ensures that everything is in exactly the right place. If anything then needs changing we work with our customers until everything is exactly as it should be. This even includes the recipe of the plastic which can be altered if necessary to yield different properties.

If you would like to order samples for evaluation, please contact us and tell us more about exactly what you need.

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Worldwide Sales

Our dosimetry plastic is manufactured in the UK and sold worldwide. All our material is covered in protective film and safely packed to ensure it is safe during transit.