An improved multistep avalanche detector system...

An improved multistep avalanche detector system for digital autoradiography

Abstract

We report the performance of an enhanced version of the Rutherford Appleton Laboratory digital autoradiography system. The multistep avalanche/multiwire proportional counter (MSA/MWPC) has been redesigned with a narrow (1 mm) avalanche gap which permits spatial resolution of better than 1 mm FWHM to be achieved with high energy beta emitting radiolabels (35S and 14C) for the first time. An improved, high resolution (512 × 512 pixel) digital imaging system and a simpler, more stable gas system are also described.

Authors

Bateman JE; Connolly JF; Stephenson R

Journal

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Vol. 264, No. 2-3, pp. 430–435