|Statement||by Clare Estelle Jackson.|
|The Physical Object|
|Pagination||230 p. :|
|Number of Pages||230|
Abstract Gamma ray zone plate holography is a new technique with applications to Nuclear Medicine. Unlike other tomographic techniques, three-dimensional images can be reconstructed from just one projection. The history of zone plate holography is reviewed, and the differences between this technique and conventional holography are : C E Jackson. Gamma ray zone plate holography is a new technique with applications to Nuclear Medicine. Unlike other tomographic techniques three dimensional images can be reconstructed from just one projection. The history of zone plate holography is reviewed and the differences between this technique and conventional holography are : Clare Estelle Jackson. A new technique is developed to image IR sources by holography using a binary Gabor zone plate. The hologram consists of superimposed shadows of the binary Gabor zone plate cast by IR sources. The reconstruction is carried out by using Fast Fourier Transforms. The scaling produced by the zone plate encoded technique is indicated and a correction for this can be easily made using a : Yuji Shen, T. D. Beynon. SINCE the publication of the papers of Gabor on diffraction microscopy1,2, work has been going on in this Laboratory on the effect of varying the source-hologram distance and the hologram size on.
The Gabor zone plate for visible light could be achieved by optical methods, for example, the hologram produced by a plane wave shining on a single elastic point scatterer could act as a Gabor zone plate. Though it is attractive, no Gabor zone plate has been found to be used in focusing X-ray or other areas, owing to the technological impossible to meet the demand of sinusoidal transmittance function for X-ray. A quantitative study on the effects of partial coherence on holography is then very important and practical for X-ray holography, and it will also be valuable to the development of a table-top X-ray holography facility with laser-plasma X-ray sources. 18 J. Cheng, S. Han /Optics Communications () In the present paper this problem. Case Study of the Performance of a Gamma-Ray Event Parameterization Application Eric Tyson,zz[email protected] Abstract Performance analysis is a critical component of the development of applications in high-performance scientific data processing, real-time, and other fields of performance-oriented computing. Analysis benefits. SINCE the publication of the papers of Gabor on diffraction microscopy 1,2, work has been going on in this Laboratory on the effect of varying the source-hologram distance and the hologram size on the position of the reconstituted image. It proves possible to represent the information obtained in a very simple way by the use of an instructive analogy.
Gabor’s holography at sea Gabriel Popescu 1 In , predating lasers by more than a decade, Gabor proposed a “new microscopic principle”,whichwasinitially aimed at correcting spherical aberrations in electron hemethodhasnotproducedan impact in its originally intended ﬁeld, it . there will be a threshold gamma ray energy below which the scintillation counter is insensitive to gamma rays. Scintillation counters are relatively small devices, which means that the gamma ray tool can have a high vertical resolution. Calibration Intuitively, we might expect the units for gamma ray logging to be in gamma counts per second. Near-field designs of Fresnel and Gabor zone plates are computationally analyzed by using versions that allow the foci to be brought closer to the plate than in the usual far-field applications. Gamma-ray astronomy can be used to study the most extreme environments that exist in the universe, and may also provide a number of unique laboratories for exploring the fundamental laws of physics at energies beyond the reach of earth-bound particle accelerators.