Web8 apr. 2024 · Background The Jagiellonian Positron Emission Tomograph is the 3-layer prototype of the first scanner based on plastic scintillators, consisting of 192 half-metre-long strips with readouts at both ends. Compared to crystal-based detectors, plastic scintillators are several times cheaper and could be considered as a more economical alternative to … WebIon energy and angular distributions in low-pressure capacitive oxygen RF discharges driven by tailored voltage waveforms Zolt an Donk o 1 ;2, Aranka Derzsi 3, M at e Vass1, Julian Schulze 4 Edmund Schuengel5, Satoshi Hamaguchi2 1Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of …
Numerical investigation of ion energy distribution and ion angle ...
WebThe possibilities to control ion energy distribution functions (IEDFs) and ion angle distribution functions (IADFs) on electrodes in singleand dualfrequency capacitively coupled plasma (CCP) sources are investigated by means of particle-in-cell/Monte Carlo (PIC/MCC) simulations. It is shown that the IEDFs can be controlled by the driven … WebA bimodal ion energy distribution. is the rf period and ˝ ionD2ˇ=! ionis the time an ion takes to traverse the sheath when the sheath drop is at its dc value. If we assume a collisionless Child–Langmuir space charge sheath, then the spatial variation of the sheath potential is given by V s.x/DC1x4=3 (1) where C1 D.9JN i=.4 0//2=3.M=.2e//1=3 ... cultural artifact examples of america
Time of flight - Wikipedia
Web7 nov. 2007 · The ion angle distributions (IADs) have a significant peak at a small angle, and most ions strike to the process surface with the angle less than 4 °. With the … WebOverview. The incident (source) particles, their energy spectrum and angular distribution can be specified in terms of the Geant4 General Particle Source (GPS). These settings … Web29 jan. 2011 · Pitch angle distributions of lower-energy electrons (E < 26 keV) have been surveyed using data from the Cassini Plasma Spectrometer (CAPS) ... The upward-traveling electrons, of course, do not themselves excite the aurora, and the downward traveling ions with which they associate can give rise only to the “black aurora”. east lancashire paeds physio