A Drift Multiwire Proportional Counter for Cosmic Soft X-Ray Imaging
Abstract
Multiwire proportional counters with 1 μm polypropylene windows, of dimensions 75 mm × 75 mm and 100 mm × 100 mm, have been built to map soft cosmic X-rays. The counters are constructed with a large drift region which allows us to use the center-of-gravity technique to improve the counter's efficiency and position resolution. Using 330 Torr of propane as the gas fill and an anode plane composed of 20 μm diameter, gold-plated tungsten wire spaced 1 mm apart, we have achieved a position resolution of better than 280 μm (FWHM) in two orthogonal directions at an X-ray energy of 0.94 keV.
- Publication:
-
IEEE Transactions on Nuclear Science
- Pub Date:
- February 1979
- DOI:
- 10.1109/TNS.1979.4329611
- Bibcode:
- 1979ITNS...26...46R
- Keywords:
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- Cosmic X Rays;
- Proportional Counters;
- Radiation Measurement;
- X Ray Imagery;
- Drift (Instrumentation);
- X Ray Astronomy;
- Instrumentation and Photography