10 A beam current electron gun design for a high-power electron linac [PDF]
مجله علوم و فنون هستهایThe development of electron beam applications motivates electron gun research. In addition to the beam energy and current, its quality also plays a significant role in the spread of electron guns.
P. Yousefpour Lalemi +4 more
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Monte Carlo-based analysis of the photon beam fluence with air gap thickness between Linac head exit window and patient’s skin in radiotherapy treatments [PDF]
Ядерна фізика та енергетика, 2020 Linear accelerators (Linac) are used in radiation therapy treatment and its technology improvement ensures high dosimetry quality that should be conserved for high radiotherapy efficiency.
Mohamed Bencheikh +2 more
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Dynamic of Grating Thermal Deformation on Beam Quality for Spectral Beam Combining
Frontiers in Physics, 2022 For spectral beam combining, an experimental system of dynamic beam quality caused by the thermal deformation of a grating has been designed and established.
Zhi-feng Deng +4 more
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Silica hollow core microstructured fibers for beam delivery in industrial and medical applications [PDF]
, 2015 The focus of this review is our recent work to develop microstructured hollow core fibers for two applications where the flexible delivery of a single mode beam is desired.
Fei Yu +29 more
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Effect of aberrations on the beam quality factor of Hermite-Gauss beams
Optics Express, 2023 The effect of aberrations on the beam quality factor (M2) of Hermite-Gauss (HG) beams is examined. Using the method of moments, we derive closed-form analytical expressions of M2 due to astigmatism and spherical aberration. Our analysis reveals that the radius of the HG beams plays a significant role in determining the effect of the aberrations on M2 ...
Nokwazi Mphuthi +2 more
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Proton Beam Therapy - the Challenges of Delivering High-quality Evidence of Clinical Benefit [PDF]
, 2018 The use of proton beam therapy (PBT) offers the opportunity to improve greater conformality of radiotherapy treatment delivery in some patients. However, it is associated with a high capital cost and the need to build new dedicated facilities. We discuss
Burnet N +45 more
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Sample preparation for nanoanalytical electron microscopy using the FIB lift-out method and low energy ion milling [PDF]
, 2006 Thinning specimens to electron transparency for electron microscopy analysis can be done by conventional (2 - 4 kV) argon ion milling or focused ion beam (FIB) lift-out techniques.
Smith, W. +6 more
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Method for optimising the performance of PML in anchor‐loss limited model via COMSOL
IET Science, Measurement & Technology, 2022 Perfectly matched layer has been used for solving anchor‐loss limited quality factor in the Micro electromechanical systems. However, setting up a well‐behaved perfectly matched layer requires users to change the parameters of a perfectly matched layer ...
Peng Li, Jun‐Yu Ou, Jize Yan
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Development of an adaptive laser beam shaper
, 2022 Paper 1051819, 7 S.The intensity distribution of a laser beam has a high impact on laser processing applications. In many applications, the emitted light of a laser beam source is transformed from a Gaussian intensity distribution into other intensity ...
Pütsch, O. +4 more
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Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]
, 2012 In laser cutting of thick steel sheets, quality difference is observed between cut surfaces obtained with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro +3 more
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