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Electrode thickness measurement of a Si(Li) detector for the SIXA array

T. Tikkanen·K. Hamalainen·S. Huotari
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Abstract

Cathode electrodes of the Si(Li) detector elements of the SIXA X-ray spectrometer array are formed by gold-palladium alloy contact layers. The equivalent thickness of gold in one element was measured by observing the characteristic L-shell X-rays of gold excited by monochromatised synchrotron radiation with photon energies above the L3 absorption edge of gold. The results obtained at 4 different photon energies below the L2 edge yield an average value of 22.4(35) nm which is consistent with the earlier result extracted from detection efficiency measurements. PACS: 29.40.Wk; 85.30.De; 07.85.Nc; 95.55.Ka Keywords: Si(Li) detectors, X-ray spectrometers, X-ray fluorescence, detector calibration, gold electrodes, synchrotron radiation

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T. Tikkanen, K. Hamalainen, S. Huotari. 1997-10-08. Electrode thickness measurement of a Si(Li) detector for the SIXA array. https://doi.org/10.1016/s0168-9002(97)01152-2

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