Wide-band imaging spectrometer with scintillator-deposited charge-coupled device

Miyata, Emi; Anabuki, Naohisa; Mukai, Kenji; Tawa, Noriaki; Miyauchi, Takuya; Tsunemi, H.; Miyaguchi, K.

doi:10.1016/j.nima.2006.05.264

Cited by 4 publications

(3 citation statements)

References 10 publications

(11 reference statements)

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“…A 512 by 512 array of 24 by 24 mm 2 pixels was fabricated and when cooled to À110 1C an energy resolution of 202 eV was obtained at 5.9 keV at a readout frequency of 67 kHz. The poor effective stopping power for higher energy photons (up to 100 keV) of silicon CCDs was addressed by Miyata et al, 16,17 who directly coupled a scintillating material to the rear surface of a back-illuminated CCD. Low energy (o10 keV) X-rays were detected conventionally in the silicon CCD and high energy ones in the scintillation layer behind.…”

Section: Detectorsmentioning

confidence: 99%

Atomic spectrometry update. X-ray fluorescence spectrometry

West

Ellis²,

Kregsamer

et al. 2007

J. Anal. At. Spectrom.

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Section: Detectorsmentioning

confidence: 99%

Atomic spectrometry update. X-ray fluorescence spectrometry

West

Ellis²,

Kregsamer

et al. 2007

J. Anal. At. Spectrom.

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“…In contrast to that, in detectors from the second category the energy is deposited inside the scintillator, where scintillation light is generated that is then absorbed by a photodetector, where charge carriers are generated by the scintillation light. Photodetectors coupled to structured scintillators have been developed in [4,5] with an energy resolution of ∆E/E ≈ 25% at 60 keV and at 141 keV and a spatial resolution of FWHM = 44 µm at 30 keV and FWHM = 49 µm at 141 keV for indirect signals. Quantum efficiency of 0.45 mm thick Si, 0.7 mm thick CsI, the combination of 0.45 mm thick Si + 0.7 mm thick CsI and 0.45 mm thick Si + 3 mm thick CsI.…”

Section: Introductionmentioning

confidence: 99%

A new spectroscopic imager for X-rays from 0.5 keV to 150 keV combining a pnCCD and a columnar CsI(Tl) scintillator

et al. 2017

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By combining a low noise fully depleted pnCCD detector with a columnar CsI(Tl) scintillator an energy dispersive spatial resolving detector can be realized with a high quantum efficiency in the range from below 0.5 keV to above 150 keV. The used scintillator system increases the pulse height of gamma-rays converted in the CsI(Tl), due to focusing properties of the columnar scintillator structure by reducing the event size in indirect detection mode (conversion in the scintillator). In case of direct detection (conversion in the silicon of the pnCCD) the relative energy resolution is 0.7% at 122 keV (FWHM = 850 eV) and the spatial resolution is less than 75 μm. In case of indirect detection the relative energy resolution, integrated over all event sizes is about 9% at 122 keV with an expected spatial precision of below 75 μm.

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“…The charge transfer rate was set to be 200 kHz so that the charge transfer inefficiency (CTI) could be minimized to ð2:9 AE 0:5Þ Â 10 À5 for 5.9 keV X-rays. 13) A histogram generated with single-pixel events extracted from the whole detector area is shown in Fig. 2.…”

mentioning

confidence: 99%

Soft X-Ray Responsivities of Fully Depleted Back-Illuminated Charge-Coupled Device

Miyata¹,

Ozawa²,

Matsuura³

et al. 2006

jjap

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We have measured the soft X-ray responsivities of a fully depleted back-illuminated (BI) charge-coupled device (CCD). We constructed a soft X-ray beam line for this purpose and confirmed that we irradiated K lines of carbon, oxygen, and aluminum. We operated the BI CCD in a photon-counting mode with a low-noise condition sufficient to resolve these K lines. We clearly resolved the carbon K line with the BI CCD. Because the mean absorption length of carbon K X-rays is 0.11 µm in silicon, we confirmed that our BI CCD operates in a fully depleted condition. We obtained a good linear relationship between peak pulse height and incident X-ray energy. The energy resolution can be explained by the Fano factor, the readout noise, and a small number of additional unknown noise components.

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Wide-band imaging spectrometer with scintillator-deposited charge-coupled device

Cited by 4 publications

References 10 publications

Atomic spectrometry update. X-ray fluorescence spectrometry

Atomic spectrometry update. X-ray fluorescence spectrometry

A new spectroscopic imager for X-rays from 0.5 keV to 150 keV combining a pnCCD and a columnar CsI(Tl) scintillator

Soft X-Ray Responsivities of Fully Depleted Back-Illuminated Charge-Coupled Device

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