MEASUREMENT OF ENERGY LOSS OF LIGHT IONS USING SILICON SURFACE BARRIER DETECTOR

Basavaraja Sannakki, Mahalesh Devendrappa

Abstract: The Energy Loss (?E) of light ions such as alpha particles [Am-241] of energy 5.48 MeV have been measured in atmospheric gas at different pressures. The energy loss experiment has performed using alpha ray spectrometer. The source of Am-241 that emits alpha particles of He ions of energy 5.48 MeV. The passivated ion-implanted planar Silicon Surface Barrier Detector [SSBD] of resolution 20 KeV in vacuum for 5.48 MeV energy. The Alpha Spectrometer constitutes the Multi-Channel Analyzer (MCA-1K) connected with Alpha Ray Spectroscopy Software (ALSS), Power Supply (NIM BIN) and Vacuum Pump. The measured energy loss [?E] in the vacuum at 4.2 mbar was 9.64 KeV and that in without vacuum the energy loss [?E] was 4.005 MeV. The range of alpha particles in atmospheric gas at different pressures is obtained through the measurement of transmitted energy.

Keywords: Energy Loss, SSBD, Gas Pressure and Transmitted Energy

DOI: https://doi.org/10.15623/ijret.2014.0315055