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Fish bone pierced in the upper esophagus. Right image without contrast medium, left image during swallowing with contrast medium. To obtain an image with any type of image detector the part of the patient to be X-rayed is placed between the X-ray source and the image receptor to produce a shadow of the internal structure of that particular part of the body.
A circular cut of a PSP plate. On photostimulable phosphor (PSP) plates, the phosphor layer is typically 0.1 to 0.3 mm thick. After the initial exposure by short-wavelength (typically, X-ray) electromagnetic radiation, excited electrons in the phosphor material remain 'trapped' in 'colour centres' ("F-centers") in the crystal lattice until stimulated by the second illumination.
A portable aSi flat-panel detector is used to visualise the movement of liquids in sand cores under high pressure. Flat-panel detectors are a class of solid-state x-ray digital radiography devices similar in principle to the image sensors used in digital photography and video.
Measurement of gamma ray spectrum with a scintillation counter. A high voltage drives the counter which feeds signals to the Multichannel Analyser (MCA) and computer. Scintillators often convert a single photon of high energy radiation into a high number of lower-energy photons, where the number of photons per megaelectronvolt of input energy ...
Birowosuto at al. [30] studied the scintillation properties of 3-D and 2-D layered perovskites under X-ray excitation. MAPbBr 3 (CH 3 NH 3 PbBr 3) emits at 550 nm and MAPbI 3 (CH 3 NH 3 PbI 3) at 750 nm which is attributed to exciton emission near the band gap of the compounds. In this first generation of Pb-halide perovskites the emission is ...
Starting Oct. 30, Costco is rolling out holiday savings throughout all departments available in-warehouse and online. Fans of the Kirkland Signature brand will be excited to see there are more ...
Silicon drift detectors (SDDs) are X-ray radiation detectors used in x-ray spectrometry (XRF and EDS) and electron microscopy. Their chief characteristics compared with other X-ray detectors are: high count rates; comparatively high energy resolution (e.g. 125 eV for Mn Kα wavelength) Peltier cooling
The simplest cameras for X-ray powder diffraction consist of a small capillary and either a flat plate detector (originally a piece of X-ray film, now more and more a flat-plate detector or a CCD-camera) or a cylindrical one (originally a piece of film in a cookie-jar, but increasingly bent position sensitive detectors are used). The two types ...
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