Mapping photocathode quantum efficiency with ghost imaging
نویسندگان
چکیده
منابع مشابه
Quantum Ghost Imaging by Measuring Reflected Photons
Quantum Ghost Imaging by Measuring Reflected Photons R. E. Meyers1 and K. S. Deacon1 Summary A new type of imaging, Quantum ghost imaging, is described that is based on the measurement of photons reflected from an object . A CCD array is placed facing a chaotic light source and gated by a photon counting detector that simply counts all randomly reflected photons from an object. A “ghost” image ...
متن کاملEmittance and Quantum Efficiency Measuremen 1.6 Cell S-band Photocathode Rf Gun with Mg C
A comparison of electron beam parameters from a 1.6 cell S-band rf gun with Cu and Mg cathode at the SLAC Gun Test Facility are reported. The lower work function of Mg compared to Cu theoretically increases the quantum efficiency for a fixed laser wavelength and also increases the thermal emittance. Slice emittance measurements at low charge (15 pC) set an upper limit on the thermal emittance o...
متن کاملGhost Imaging with X Rays
C onventional imaging methods capture an image of an object by recording, in a multipixel detector, the intensity and color of a light beam that hits the object. The technique of ghost imaging is different. It forms an image of the object using correlations between the intensities of two light beams, an “object beam” that strikes the object and a “reference beam” that does not. Crucially, in th...
متن کاملGhost Imaging with Blackbody Radiation
Abstract We present a theoretical study of ghost imaging by using blackbody radiation source. A Gaussian thin lens equation for the ghost imaging, which depends on both paths, is derived. The dependences of the visibility and quality of the image on the transverse size and temperature of the blackbody are studied. The main differences between the ghost imaging by using the blackbody radiation a...
متن کاملAn introduction to ghost imaging: quantum and classical
Ghost imaging has been a subject of interest to the quantum optics community for the past 20 years. Initially seen as manifestation of quantum spookiness, it is now recognized as being implementable in both single- and many-photon number regimes. Beyond its scientific curiosity, it is now feeding novel imaging modalities potentially offering performance attributes that traditional approaches ca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Accelerators and Beams
سال: 2020
ISSN: 2469-9888
DOI: 10.1103/physrevaccelbeams.23.022803