Linearity discontinuities in Xe-filled X-ray microstrip detectors

G. Zavattini, M. Feroci, Carl Budtz-Jørgensen, Freddy Christensen, F. Frontera, M. Gambaccini, F. Ortuno-Prados, G. Pareschi

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A prototype Xe + 10% CH4 microstrip detector was used to study the K-edge discontinuity in the pulse-height distribution as a function of the energy of incident X-rays. The electronics used was such that a pulse-shape rejection could be made of K-fluorescence reabsorption in the detector. The measured jump at the K-edge was (169 +/- 12)eV. It was also seen that K-alpha- and K-beta-decay channels produce different pulse heights for the same deposited energy. We find that the difference in energy between the calibration fines of the K-beta 2- and the K-beta 1.3-escape peaks is (93+/-12)eV whereas between the K-beta 1.3 and the K-alpha-escape peaks' calibration the energy gal is (69+/-7)eV.
Original languageEnglish
JournalNuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
Volume401
Issue number2-3
Pages (from-to)206-216
ISSN0168-9002
Publication statusPublished - 1997

Keywords

  • radiation detectors
  • astronomical and space research instrumentation
  • radiation spectrometers and spectroscopic techniques

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