Protection of Alpha Spectrometry Detectors Using Thin Formvar Films and Influence on Detection Characteristics

Using formvar films produced in our laboratory the influence on alpha PIPS spectrometry parameters, as energy shift, efficiency and resolution was investigated. The thickness of formvar films was estimated with the ASTAR web databases. No significant deterioration of the alpha spectrometry parameters was observed when using thin formvar films. Efficiency of the detection remains unchangeable and resolution decrease with 7% for a thickness of 50 $\mu$ g/cm $^{2}$ . Alpha shift from spectrum can be used for measuring the thin foils.