TASL

TASL Track Etch

Custom cut plastic to meet your specifications

Of all track etch detector properties and applications studied since the mid 1950’s, one of the most track sensitive materials manufactured to date is poly-allyl diglycol carbonate, which is capable of detecting low-LET particles such as protons. TASL Track Etch responds to alphas, protons, neutrons, and heavy charged particles.

When passing through the track etch material, an ionizing particle deposits energy to resident electrons, leaving a trail of damaged molecules along its track in the form of broken polymer chains and/or free radicals.

Alpha particles create damage tracks directly in the surface of the detector material whereas neutrons produce tracks indirectly via elastic scattering and nuclear (n,α) and (n,p) reactions throughout the detector volume. When a charged particle passes into TASL Track Etch it creates a trail of invisible yet permanent ionization damage along the axis of its path.

This damage can be revealed by etching the plastic in a strong hot solution of sodium hydroxide, NaOH. tracks from charged particles such as recoil protons from fast neutron interactions and alpha particles from radon and radon daughters may be made visible in this way. The figure below shows an example of recoil proton tracks and alpha particle tracks in TASL Track Etch.

TASL Track Etch is provided in laser-cut pieces with protective polyethylene covering which is removed prior to use in monitoring applications. Dot matrix identification with corresponding numerical identification can be provided. individual dosimeters are cut with one corner trimmed.

Product Details

Features

May be used separately, or in conjunction with TLD whole body dosimeters for neutron detection

Energy independent providing a practical and convenient method to monitor and establish a permanent record of exposure to intermediate and fast neutron radiation.

TASTRAK measure doses compliment the beta and gamma doses measured by TLD systems.

Important advantages exist when compared to counting tracks in nuclear emulsions and electrochemical etched plastic.

Chemical Name:
Polyallyl diglycol carbonate (C12H18O7)

 

Physical properties:
Clear, colorless, rigid plastic

 

Density:
1.30 g/cm3

 

Lower Limit of Detection:
20 mrem, unmoderated Cf-252 

 

Accuracy:
0.7%* (100 mrem – 3,400 mrem)

 

Fast Neutron Energy Response:
200 keV – 15 MeV

 

Thickness:
1.50 mm 

 

Shape and Dimensions:
Variable up to 9.0 cm2

 

Shelf Life:
Indefinite, when refrigerated at -20°c