نتایج جستجو برای: x ray detector
تعداد نتایج: 713717 فیلتر نتایج به سال:
X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
Laser pump-X-ray probe experiments require control over the X-ray pulse pattern and timing. Here, the first use of pseudo-single-bunch mode at the Advanced Light Source in picosecond time-resolved X-ray absorption experiments on solutions and solids is reported. In this mode the X-ray repetition rate is fully adjustable from single shot to 500 kHz, allowing it to be matched to typical laser exc...
This paper describes a method for rapid measurements of the specular X-ray reflectivity signal using an area detector and a monochromatic, well collimated X-ray beam (divergence below 0.01°), combined with a continuous data acquisition mode during the angular movements of the sample and detector. In addition to the total integrated (and background-corrected) reflectivity signal, this approach y...
We have measured total vocal-tract (VT) length, lip-tube length and glottal height during vowels on X-ray film data of short French utterances [1]. VT midpoints are determined by progressively fitting circles along the VT-length from the glottis to lip opening. The VT-length is obtained by summing up the distance between adjacent midpoints. Lip-tube length is defined as the distance between the...
Images were acquired using micro tomography technique (μCT ). That technique allows to study nondestructive internal structures imaging of any object. X-ray tube generates x-ray electromagnetic radiation which penetrates through the studied sample. Attenuation of x-rays intensity is registered at the opposite side of the sample by two-dimensional detector. Value of x-ray intensity registered in...
A new detector system for protein crystallography is now being developed based on an X-ray HARP-FEA (high-gain avalanche rushing amorphous photoconductor-field emitter array), which consists of an amorphous selenium membrane and a matrix field emitter array. The combination of the membrane avalanche effect with a single driven FEA has several advantages over currently available area detectors, ...
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