scholarly journals A Silicon Multi-Cathode Detector For Microanalysis Applications

2003 ◽  
Vol 11 (5) ◽  
pp. 24-25
Author(s):  
Shaul Barkan ◽  
Liangyuan Feng ◽  
Jan S. Iwanczyk ◽  
Bradley E. Patt ◽  
Carolyn R. Tull ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Count Rate ◽  
Rate Capability ◽  
High Count ◽  
High Count Rate ◽  
New Class ◽  
Excellent Energy Resolution

A new class of silicon multi-cathode detector (SMCD) has been developed for microanaiysis spectrometry applications. The detector has excellent energy resolution (< 150 eV FWHM) and high count rate capability (>1 Mcps). An energy resolution of 143 eV FWHM at 5.9 keV was measured with the SMCD at 6 μs peaking time.

scholarly journals A New Improved Silicon Multi-Cathode Detector (SMCD) for Microanalysis and X-Ray Mapping Applications

2004 ◽  
Vol 12 (6) ◽  
pp. 36-37 ◽  
Author(s):  
Shaul Barkan ◽  
Valeri D. Saveliev ◽  
Jan S. Iwanczyk ◽  
Liangyuan Feng ◽  
Carolyn R. Tull ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Count Rate ◽  
Spectral Response ◽  
Rate Capability ◽  
High Sensitivity ◽  
Low Noise ◽  
X Rays ◽  
High Count ◽  
High Count Rate ◽  
X Ray

A silicon multi-cathode detector (SMCD) has been developed for microanalysis and x-ray mapping applications. The SMCD has a large active area (∼0.5 cm2), excellent energy resolution, and high count rate capability. The detector utilizes novel structures that have produced very low dark current, high electric field, uniform charge collection, low noise and high sensitivity to low energy x-rays. The detector's spectral response was evaluated using a 55Fe radioisotope source, as well as by fluorescing materials with an x-ray generator. Figure 1 shows a 55Fe spectrum with an energy resolution of 125 eV FWHM at 5.9 keV collected at 12 μs peaking time. This energy resolution has been repeatably measured on many different detectors. To evaluate the high count rate x-ray performance, which is very important for fast x-ray mapping, a Cu sample was fluoresced using a Rh-anode x-ray tube.

IBEX: Versatile Readout ASIC With Spectral Imaging Capability and High Count Rate Capability

2018 ◽  
Vol 65 (6) ◽  
pp. 1285-1291 ◽  
Author(s):  
M. Bochenek ◽  
S. Bottinelli ◽  
Ch. Broennimann ◽  
P. Livi ◽  
T. Loeliger ◽  
...  
Keyword(s):  
Count Rate ◽  
Rate Capability ◽  
Spectral Imaging ◽  
High Count ◽  
High Count Rate ◽  
Imaging Capability

scholarly journals High Energy Resolution X-Ray Spectrometer for High Count Rate Xrf Applications

1993 ◽  
Vol 37 ◽  
pp. 405-411
Author(s):  
C. S. Rossington ◽  
N. W. Madden ◽  
K. Chapman
Keyword(s):  
Energy Resolution ◽  
Count Rate ◽  
High Energy ◽  
Low Noise ◽  
High Energy Resolution ◽  
Photon Flux ◽  
Large Area ◽  
High Count ◽  
High Count Rate ◽  
X Ray

AbstractA new x-ray spectrometer has been constructed which incorporates a novel large area, low capacitance Si(Li) detector and a low noise JFET (junction field effect transistor) preamplifier. The spectrometer operates at high count Tates without the conventional compromise in energy resolution. For example, at an amplifier peaking time of 1 p.sec and a throughput count rate of 145,000 counts sec-1, the energy resolution at 5.9 keV is 220 eV FWHM. Commercially available spectrometers utilizing conventional geometry Si(Li) detectors with areas equivalent to the new detector have resolutions on the order of 540 eV under the same conditions. Conventional x-ray spectrometers offering high energy resolution must employ detectors with areas one-tenth the size of the new LBL detector (20 mm2 compared with 200 mm2). However, even with the use of the smaller area detectors, the energy resolution of a commercial system is typically limited to approximately 300 eV (again, at 1 μsec and 5.9 keV) due to the noise of the commercially available JFET's. The new large area detector is useful in high count rate applications, but is also useful in the detection of weak photon signals, in which it is desirable to subtend as large an angle of the available photon flux as possible, while still maintaining excellent energy resolution. X-ray fluorescence data from die new spectrometer is shown in comparison to a commercially available system in the analysis of a dilute muhi-element material, and also in conjunction with high count rate synchrotron EXAFS applications.

Energy resolution and high count rate performance of superconducting tunnel junction x-ray spectrometers

1998 ◽  
Vol 69 (1) ◽  
pp. 25-31 ◽  
Author(s):  
M. Frank ◽  
L. J. Hiller ◽  
J. B. le Grand ◽  
C. A. Mears ◽  
S. E. Labov ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Tunnel Junction ◽  
Count Rate ◽  
Superconducting Tunnel Junction ◽  
Rate Performance ◽  
High Count ◽  
High Count Rate ◽  
X Ray

scholarly journals Automated Qualitative Element Analysis of EDS Spectra with Considering Pile-Up Distortions in High Count-Rate Modes

2011 ◽  
Vol 17 (S2) ◽  
pp. 1192-1193 ◽  
Author(s):  
F Eggert ◽  
T Elam ◽  
R Anderhalt ◽  
J Nicolosi
Keyword(s):  
Count Rate ◽  
High Count ◽  
Element Analysis ◽  
High Count Rate ◽  
Pile Up

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

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