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The use and characterization of a backilluminated charge-coupled device in investigations of pulsed x-ray and radiation sources.

In English

Författare

Summary, in English

Examinations of bremsstrahlung and energetic electron beams from a novel laser plasma source motivate and assist characterization of a backthinned, backilluminated direct detection x-ray charge-coupled device (CCD), a topology that is uncommon in hard x-ray work. Behavior toward pseudomonochromatic ((55)Fe) and multichromatic ((241)Am) sources is briefly reviewed under optimized noise conditions. Results collectively establish the previously unknown functional depth structure. Several modes of usage are illustrated in approximately 4-20 keV x-ray laser plasma source investigations, where the significance of the characterization is briefly discussed. The spectral redistribution associated with this CCD topology is unfavorable, yet appropriate analysis ensures that sufficient spectral information remains for quantitative determination of broadband x-ray flux and spectra in essentially single laser shot measurements. The energy dependence of nascent electron cloud radii in silicon is determined using broadband x-rays from the laser plasma source, turning the narrow depletion depth to advantage. Finally, the characterization is used to quantify recent x-ray spectral explorations of the water jet laser plasma source operating under aspirator vacuum. These results will have key value for establishment of laboratory based ultrafast extended x-ray absorption fine structure experiments using microbolometric detectors.

Avdelning/ar

Publiceringsår

2008

Språk

Engelska

Publikation/Tidskrift/Serie

Review of Scientific Instruments

Volym

79

Issue

10

Dokumenttyp

Artikel i tidskrift

Förlag

American Institute of Physics (AIP)

Ämne

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1089-7623