engleski

A gas ionisation detector in the axial (Bragg) geometry used for the Time-of-Flight Elastic Recoil Detection Analysis

In this paper Time-of-Flight Elastic Recoil Detection Analysis (TOF-ERDA) spectrometer with a newly constructed gas ionization detector (GID) for energy detection is presented. The detector is designed in the axial (Bragg) geometry with a 3x3 array of 50 nm thick Si3N4 membranes as an entrance window. 40 mbar isobutane gas was sufficient to stop a 30 MeV primary iodine beam as well as all recoils in the detector volume. Spectrometer and detector performances were determined showing significant improvement in the mass and energy resolution respectively, comparing to the spectrometer with a standard silicon particle detector for an energy measurements.

Gas detector; mass resolution; Energy resolution; TOF-ERDA

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