Tomographic incoherent holography for microscale X-ray source
نویسندگان
چکیده
Nowadays, in the experiment of inertial confinement fusion (ICF), it is difficult to distinguish emissions intensity information implosion area or black cavity plasma depth direction with single imaging, that is, images acquired by detector are integral along detection direction. In this paper, a tomographic imaging method using incoherent holography for microscale X-ray source introduced. The holographic technology has an mechanism encodes and compresses three-dimensional space light into two-dimensional hologram. theoretical part, we examine tomography. Then compress sensing model which appropriate tomography investigated. Combined hologram reconstruction algorithm based on sensing, distribution at different object distances can be recovered from order verify feasibility scheme, simulated process axial length 16mm, obtained result spacing 4mm reconstructing corresponding backpropagation algorithms, Wiener filtering algorithms algorithm. All methods mentioned above recover letter certain distance, indicating potential imaging. For image, there large amount series noise edge signal, affects signal recognition practical applications; Although recognize image some extent, low contrast reconstructed results target strength mixed background noise. Compared backpropagation, theory provides more professional technique ill-condition problem. Results shows crosstalk significantly reduced, objective plane basically concentrated area. Peak signal-to-noise ratio continuously optimized as number iterations increases. Besides, horizontal resolution caused innermost ring radius Fresnel zone plate was analyzed last part article. It suggests shorter could improve resolution, while deteriorating resolution.
منابع مشابه
Quantum Electrodynamics of Internal Source X-Ray Holographies: Bremsstrahlung, Fluorescence, and Multiple Energy X-Ray Holography
Quantum electrodynamics (qed) is used to derive the differential cross sections measured in the three new experimental internal source ensemble xray holographies: bremsstrahlung (BXH), fluorescence (XFH), and multipleenergy (MEXH) x-ray holography. The polarization dependence of the BXH cross section is also obtained. For BXH, we study analytically and numerically the possible effects of the vi...
متن کاملMassively parallel X-ray holography
Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, California 94025, USA Laboratory of Molecular Biophysics, Department of Cell and Molecular Biology, ...
متن کاملFluorescence incoherent color holography.
We present a new imaging method to record multicolor digital holograms from objects emitting fluorescent light. The fluorescent light specific to the emission wavelength of various fluorescent dyes after excitation of three dimensional (3D) objects is recorded on a digital monochrome camera after reflection from a diffractive optical element (DOE). For each wavelength of fluorescent emission, t...
متن کاملIncoherent Digital Holography: A Review
Digital holography (DH) is a promising technique for modern three-dimensional (3D) imaging. Coherent holography records the complex amplitude of a 3D object holographically, giving speckle noise upon reconstruction and presenting a serious drawback inherent in coherent optical systems. On the other hand, incoherent holography records the intensity distribution of the object, allowing a higher s...
متن کاملX-ray holography: theory and experiment
A detailed description of x-ray fluorescent holography is given using the formalism of classical electrodynamics. Effects of the wavefront curvature are calculated. It is shown that neglecting these effects might cause large errors especially in the forward direction. The model calculation is compared with experimental data. It is shown that for the model system of NiO the experiment agrees wel...
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: Chinese Physics
سال: 2023
ISSN: ['1000-3290']
DOI: https://doi.org/10.7498/aps.72.20230920