Responsivity of Diamond X-ray Photodiodes Calibrated at NSLS

Conference · Sun Sep 27 04:00:00 EDT 2009

OSTI ID:970615

Keister, J W; Smedley, J; Muller, E M; Bohon, J

Single crystal, high purity synthetic diamond is used as photoabsorption and carrier transport medium in x-ray photodiodes. While the thermal / mechanical robustness and high x-ray transmission of diamond make such devices attractive for synchrotron instrumentation, state-of-the-art quality material and electrical interfaces further make such detectors feasible. The present work develops methodology for attaining calculable responsivity (photocurrent yield) over a wide range of photon energies (0.2 to 28 keV) to within 5% accuracy. These methods achieve linear response for up to 0.2 W absorbed x-ray power and response time as low as 1 ns. Details of contact formation / robustness and bias configuration are explored.

• Research Organization: Brookhaven National Laboratory (BNL) NSLS II Project Office
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 970615
• Report Number(s): BNL--90507-2009-CP; KC020401G
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCURACY
CONFIGURATION
DIAMONDS
Detector
Diamond
MONOCRYSTALS
PHOTODIODES
PHOTONS
Photocurrent
SYNCHROTRON RADIATION
SYNCHROTRONS
Single Crystal
Synchrotron
TRANSPORT
national synchrotron light source