UNIQUE CHARACTERISTICS OF THIN-FILM ELECTROCHEMICAL ETCHING

The spark counter makes it possible to scan large detector areas and to measure neutron fluences and radon exposures with unique sensitivity. For neutron-induced recoils and for short-etchable tracks (such as alpha-particle tracks in polycarbonate) the spark counter is no more useful. In this case the electrochemical etching process is very often used to facilitate the track counting, in spite of its limitations of high-voltage requirements. In this paper, it will be illustrated how simple is to overcome these shortcomings by thin-film electrochemical etching.