Stability considerations and performance of wide dynamic range, ambient light active rejection circuits in photodiode receivers

2004 ◽  
Author(s):  
A.-T. Avestruz ◽  
J.I. Rodriguez ◽  
R. Hinman ◽  
G. Livshin ◽  
E.C. Lupton ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Ambient Light ◽  
Wide Dynamic Range ◽  
And Performance

Sample Treatment for TXRF - Requirements and Prospects

1988 ◽  
Vol 32 ◽  
pp. 211-220 ◽  
Author(s):  
Andreas Prange ◽  
Heinrich Schwenke
Keyword(s):  
Water Quality ◽  
Air Pollution ◽  
Dynamic Range ◽  
Water Quality Management ◽  
High Sensitivity ◽  
Total Reflection ◽  
Sample Treatment ◽  
Wide Dynamic Range ◽  
X Ray ◽  
And Performance

Total-reflection X-ray fluorescence spectrometry, abbreviated as TXRF, is known for its high sensitivity down to the low pg-level or sub-ppb level, respectively, and its wide dynamic range of about three to four orders of magnitude (Yoneda and Horiuchi, 1971, Wobrauschek and Aiginger, 1980; Knoth and Schwenke, 1978 and 1980, Aiginger and Wobrausohek, 1985, Michaelis et al., 1985, Prange, 1987). Meanwhile several laboratories have purchased commercially available TXRF spectrometers and have started to report favourable about this technique. Applications have been reported from various disciplines: These are estuarine and marine water quality management and research, air pollution studies, mineralogical investigations, biology and medicine (Prange, 1987, Prange et al, 1985; Prange and Kremling, 1985, Prange et al., 1987, Stöβel and Prange, 1985, Michaelis, 1986, Ketelsen and Knöchel, 1985, Leland et al., 1987, von Bohlen et al., 1987, Junge et al., 1983, Hentschke et al., 1985, Hentschke et al., 1985, Gerwinski and Goetz, 1987, von Bohlen et al., 1987), In spite of its close kinship to conventional EDXRF , TXRF is quite different with respect to operation and performance and provides complementary capabilities.

Ambient-light sensor system with wide dynamic range enhanced by adaptive sensitivity control

2009 ◽  
Vol 17 (8) ◽  
pp. 681 ◽  
Author(s):  
Hyun-Sang Park ◽  
Seon-Beom Ji ◽  
Min-Koo Han ◽  
Jae-Sic Lee ◽  
Chi-Woo Kim ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Sensor System ◽  
Ambient Light ◽  
Wide Dynamic Range ◽  
Sensitivity Control ◽  
Light Sensor

Slow-Scan CCD Observation of Backscattering Patterns in SEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1308-1309
Author(s):  
F. Ouyang ◽  
D. A. Ray ◽  
O. L. Krivanek
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Lens System ◽  
Wide Dynamic Range ◽  
Peltier Cooler ◽  
Diffraction Patterns ◽  
Scanning Electron

Electron backscattering Kikuchi diffraction patterns (BKDP) reveal useful information about the structure and orientation of crystals under study. With the well focused electron beam in a scanning electron microscope (SEM), one can use BKDP as a microanalysis tool. BKDPs have been recorded in SEMs using a phosphor screen coupled to an intensified TV camera through a lens system, and by photographic negatives. With the development of fiber-optically coupled slow scan CCD (SSC) cameras for electron beam imaging, one can take advantage of their high sensitivity and wide dynamic range for observing BKDP in SEM.We have used the Gatan 690 SSC camera to observe backscattering patterns in a JEOL JSM-840A SEM. The CCD sensor has an active area of 13.25 mm × 8.83 mm and 576 × 384 pixels. The camera head, which consists of a single crystal YAG scintillator fiber optically coupled to the CCD chip, is located inside the SEM specimen chamber. The whole camera head is cooled to about -30°C by a Peltier cooler, which permits long integration times (up to 100 seconds).

Design of an Offner convex grating radiation calibration light source with a wide dynamic range

2020 ◽  
Vol 13 (5) ◽  
pp. 1085-1093
Author(s):  
XU Da ◽  
◽  
YUE Shi-xin ◽  
ZHANG Guo-yu ◽  
SUN Gao-fei ◽  
...  
Keyword(s):  
Light Source ◽  
Dynamic Range ◽  
Wide Dynamic Range

A novel, flexible dual-mode power generator adapted for wide dynamic range of the aqueous salinity

Nano Energy ◽  
2021 ◽  
Vol 85 ◽  
pp. 105970
Author(s):  
Lianhui Li ◽  
Shouwei Gao ◽  
Mingming Hao ◽  
Xianqing Yang ◽  
Sijia Feng ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Dual Mode ◽  
Wide Dynamic Range ◽  
Power Generator
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