Performance of an x-ray microcalorimeter under ac biasing

Jan van der Kuur, Piet de Korte, Mikko Kiviranta, Heikki Seppä

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

Frequency domain multiplexing (FDM) is an attractive option for the readout of imaging arrays of microcalorimeters.
Implementation of FDM requires ac biasing of the individual microcalorimeters. In this letter we present a small signal model for the behavior of a microcalorimeter under ac bias.
Moreover, we have measured the behavior of the same microcalorimeter under ac (at 46 kHz) and dc bias. These experiments show that the performance of the device is very similar in terms of energy resolution, pulse shapes, and current–voltage characteristics.
The measured energy resolution at 5.89 keV is 6.9 eV for ac bias and 5.5 eV for dc bias.
The effective time constant in both cases is 100 μs.
Original languageEnglish
Pages (from-to)4467-4469
JournalApplied Physics Letters
Volume81
Issue number23
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

calorimeters
multiplexing
x rays
time constant
readout
energy
pulses

Keywords

  • calorimeters
  • x-ray detection
  • x-ray spectroscopy
  • readout electronics
  • image sensors
  • frequency division multiplexing

Cite this

Kuur, Jan van der ; Korte, Piet de ; Kiviranta, Mikko ; Seppä, Heikki. / Performance of an x-ray microcalorimeter under ac biasing. In: Applied Physics Letters. 2002 ; Vol. 81, No. 23. pp. 4467-4469.
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Performance of an x-ray microcalorimeter under ac biasing. / Kuur, Jan van der; Korte, Piet de; Kiviranta, Mikko; Seppä, Heikki.

In: Applied Physics Letters, Vol. 81, No. 23, 2002, p. 4467-4469.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Performance of an x-ray microcalorimeter under ac biasing

AU - Kuur, Jan van der

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AU - Kiviranta, Mikko

AU - Seppä, Heikki

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Y1 - 2002

N2 - Frequency domain multiplexing (FDM) is an attractive option for the readout of imaging arrays of microcalorimeters. Implementation of FDM requires ac biasing of the individual microcalorimeters. In this letter we present a small signal model for the behavior of a microcalorimeter under ac bias. Moreover, we have measured the behavior of the same microcalorimeter under ac (at 46 kHz) and dc bias. These experiments show that the performance of the device is very similar in terms of energy resolution, pulse shapes, and current–voltage characteristics. The measured energy resolution at 5.89 keV is 6.9 eV for ac bias and 5.5 eV for dc bias. The effective time constant in both cases is 100 μs.

AB - Frequency domain multiplexing (FDM) is an attractive option for the readout of imaging arrays of microcalorimeters. Implementation of FDM requires ac biasing of the individual microcalorimeters. In this letter we present a small signal model for the behavior of a microcalorimeter under ac bias. Moreover, we have measured the behavior of the same microcalorimeter under ac (at 46 kHz) and dc bias. These experiments show that the performance of the device is very similar in terms of energy resolution, pulse shapes, and current–voltage characteristics. The measured energy resolution at 5.89 keV is 6.9 eV for ac bias and 5.5 eV for dc bias. The effective time constant in both cases is 100 μs.

KW - calorimeters

KW - x-ray detection

KW - x-ray spectroscopy

KW - readout electronics

KW - image sensors

KW - frequency division multiplexing

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