A 10 bit resolution readout channel with dynamic range compression for X-ray imaging at FELs

AbstractThe Fuji Imaging Plate (IP) is a 2-dimensional detector in which a latent X-ray image is stored as a distribution of color centers on a photostimulable phosphor (BaFBr:Eu2+) screen. It has a large effective area, wide dynamic range and high sensitivity. Thus it has been widely used not only in medical but also in scientific and industrial fields. Particularly in X-ray structure analysis, mainly of proteins, it has been used extensively and achieved good results.On the other hand, few applications have been reported in the field except for structure analysis, in spite of the superior performance of the IP which will give significant advantages in various measurements which have been done using an X-ray film such as electric device and fiber specimen.Therefore we report here the basic performance of R-AXIS II(Rigaku Automated X-Ray Imaging System II), an IP reader made by Rigaku, and some applications of X-ray diffraction measurements using IP.

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Custom column readout circuitry to extend the dynamic range of a-Si:H current mediated pixel amplifiers for large area diagnostic X-ray imaging applications

Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513) ◽

10.1109/ccece.2004.1349743 ◽

2004 ◽

Author(s):

T. Ottaviani ◽

K.S. Karim

Keyword(s):

Dynamic Range ◽

Large Area ◽

X Ray ◽

X Ray Imaging

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Versatile Lithium Fluoride Luminescent Detectors for High Resolution Imaging Applications from Extreme Ultraviolet to Soft and Hard X-Rays

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.98.54 ◽

2016 ◽

Vol 98 ◽

pp. 54-63

Author(s):

Francesca Bonfigli ◽

Enrico Nichelatti ◽

Maria Aurora Vincenti ◽

Rosa Maria Montereali

Keyword(s):

Spatial Resolution ◽

Lithium Fluoride ◽

Dynamic Range ◽

High Spatial Resolution ◽

Extreme Ultraviolet ◽

Large Field ◽

X Rays ◽

X Ray ◽

Research Fields ◽

X Ray Imaging

X-ray imaging represents a very relevant tool in basic and applied research fields due to the possibility of performing non-destructive investigations with high spatial resolution. We present innovative X-ray imaging detectors based on visible photoluminescence from aggregate electronic defects locally created in lithium fluoride (LiF) during irradiation. Among the peculiarities of these detectors, noteworthy ones are their very high spatial resolution (intrinsic ∼2 nm, standard ∼300 nm) across a large field of view (>10 cm2), wide dynamic range (>103) and their insensitivity to ambient light. The material photoluminescence response can be enhanced through the proper choice of reflecting substrates and multi-layer designs in the case of LiF films. The present investigation deals with the most appealing X-ray imaging applications, from simple lensless imaging configurations with commonly-available laboratory polychromatic X-ray sources to X-ray imaging-dedicated synchrotron beamlines in absorption and phase contrast experiments.

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Page Sized a-Si:H 2-Dimensional Imaging Arrays

MRS Proceedings ◽

10.1557/proc-297-957 ◽

1993 ◽

Vol 297 ◽

Cited By ~ 6

Author(s):

R.A. Street ◽

R. Weisfield ◽

S. Nelson ◽

P. Nylen ◽

X.D. Wu

Keyword(s):

High Speed ◽

Sensor Array ◽

Dynamic Range ◽

Imaging Arrays ◽

X Ray ◽

Structure Control ◽

X Ray Imaging ◽

Control Electronics ◽

Imaging Properties ◽

Intrinsic Dynamic

The first page-sized a-Si:H sensor array intended for use as a contact imager is described. The array collects light very efficiently, making it well suited to high speed document input and medical x-ray imaging (by the addition of a phosphor). The array structure, control electronics and imaging properties are discussed. Data is presented from a 13" diagonal array with 512⋗560 pixels of size 0.45 mm, although the technology is capable of higher resolution. The image is read-out using 8 ICs containing 64 voltage sensitive amplifiers. The intrinsic dynamic range of the imaging array is about 105, but is limited to <1000 by the read-out amplifiers. The minimum read-out time of about 25 msec allows real time imaging.

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