منابع مشابه
designing a fast locking pll
a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...
Fast Neutron Thermalization
The penetration of 14-MeV neutrons into five representative soils is investigated with two independent neutron transport calculational procedures. From Monte Carlo and discreteordinates codes, the spatial distribution of the thermal fluence and the capture of neutrons in the soils is determined for two neutron source geometries. Finally, empirical approximations of the thermal neutron fluence i...
متن کاملFast Neutron Therapy: a Status Report
The paper, in its first part, outlines the place of the fast neutron therapy (FNT) in the concert of radiation therapies by listing the active facilities, comparing technical and statistical data, and summarizing distinct biological properties of fast neutrons. The gross situation of Boron neutron capture therapy (BNCT) is mentioned as well. As well as the number of patients is decreasing, FNT ...
متن کاملFast-neutron radiobiology and radiotherapy.
The application of fast neutrons, negative pions or heavy ions will only provide an advantage for the radiotherapy of cancer if, in comparison with conventional radiations, e.g., X-rays, gamma rays and electrons, better depth-dose and collimation characteristics or specific radiobiological dose response relationships result in greater local control probabilities for tumours without increased fr...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1988
ISSN: 0160-1741
DOI: 10.6028/jres.093.127