Flat-response X-ray-diode-detector development
Abstract
Design of an improved sub-nanosecond flat response X-ray diode (XRD) detector was discussed. This device consists of a high Z cathode and a complex filter tailored to flatten the response so that the total X-ray energy below 1.5 keV is measured using a single detector. Three major problems have become evident as a result of our work with the original design including deviation from flatness due to a peak in the response below 200 eV, saturation at relatively low X-ray fluences, and long term gold cathode instability. Grazing incidence reflection to reduce the response below 200 eV, new high Z cathode materials for long term stability, and a new complex filter for improved flatness were investigated. Better saturation performance requires a modified XRD detector under development with reduced anode to cathode spacing and increased anode bias voltage.
- Publication:
-
Presented at 24th Am. Phys. Soc. Ann. Meeting
- Pub Date:
- October 1982
- Bibcode:
- 1982aps..meetR....T
- Keywords:
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- Diodes;
- Ionization Cross Sections;
- Radiation Detectors;
- X Rays;
- Coding;
- Computer Programs;
- Grazing Incidence;
- Long Term Effects;
- Shielding;
- Stability;
- Structural Design Criteria;
- Instrumentation and Photography