SU-D-19A-04: Parameter Characterization of Electron Beam Monte Carlo Phase Space of TrueBeam Linacs

2014 ◽  
Vol 41 (6Part3) ◽  
pp. 110-110
Author(s):  
A Rodrigues ◽  
D Sawkey ◽  
F Yin ◽  
Q Wu
Keyword(s):  
Monte Carlo ◽  
Electron Beam ◽  
Phase Space

TEM characterization of the α' and β phases in polycrystalline distrontium silicate (Sr2SiO4)

1992 ◽  
Vol 50 (1) ◽  
pp. 354-355
Author(s):  
Y. J. Kim ◽  
J. L. Shull ◽  
W. M. Kriven
Keyword(s):  
Electron Beam ◽  
Phase Space ◽  
Atmospheric Pressure ◽  
Sintering Temperature ◽  
Major Phase ◽  
Space Group ◽  
Temperature Range ◽  
Β Phase ◽  
Tem Characterization

Two polymorphs, α' and β, are known to be major phases in pure distrontium silicate (Sr2SiO4) at atmospheric pressure. Fully dense pellets were fabricated by sintering chemically prepared powders in the temperature range of 900° to 1400°C for 1 to 5 hours. Their phases and microstructures were studied by TEM. At lower sintering temperatures such as 900°C, the major phase was orthorhombic α' (space group, Pmnb). The euhedral α' grains had a size of about 1 μm diameter (Fig. la). As the sintering temperature increased, the amount of monoclinic β phase (space group, P21/n) tended to increase. These β grains were usually irregular and twinned on {100}β or {001}β planes. Concentration of the electron beam on the grains gave rise to a disappearance of twins (Fig. lb).

Experimental and Monte Carlo absolute characterization of a medical electron beam using a magnetic spectrometer

2016 ◽  
Vol 86 ◽  
pp. 16-23 ◽  
Author(s):  
F. Gobet ◽  
J. Caron ◽  
I. Bessieres ◽  
T. Bonnet ◽  
M.M. Aléonard ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Electron Beam ◽  
Magnetic Spectrometer

An inter-comparison between accuracy of EGSnrc and MCNPX Monte Carlo codes in dosimetric characterization of intraoperative electron beam

2021 ◽  
Vol 128 ◽  
pp. 104113
Author(s):  
Sara Lashkari ◽  
Hamid Reza Baghani ◽  
Mohammad Bagher Tavakoli ◽  
Seyed Rabi Mahdavi
Keyword(s):  
Monte Carlo ◽  
Electron Beam

A very rapid in situ Kikuchi technique to determine relative crystal misorientation

1988 ◽  
Vol 46 ◽  
pp. 830-831
Author(s):  
J. I. Bennetch
Keyword(s):  
Electron Beam ◽  
Analytical Techniques ◽  
Superplastic Forming ◽  
The Other ◽  
Kikuchi Pattern ◽  
Kikuchi Line ◽  
Line Analysis

In a recent study of the superplastic forming (SPF) behavior of certain Al-Li-X alloys, the relative misorientation between adjacent (sub)grains proved to be an important parameter. It is well established that the most accurate way to determine misorientation across boundaries is by Kikuchi line analysis. However, the SPF study required the characterization of a large number of (sub)grains in each sample to be statistically meaningful, a very time-consuming task even for comparatively rapid Kikuchi analytical techniques.In order to circumvent this problem, an alternate, even more rapid in-situ Kikuchi technique was devised, eliminating the need for the developing of negatives and any subsequent measurements on photographic plates. All that is required is a double tilt low backlash goniometer capable of tilting ± 45° in one axis and ± 30° in the other axis. The procedure is as follows. While viewing the microscope screen, one merely tilts the specimen until a standard recognizable reference Kikuchi pattern is centered, making sure, at the same time, that the focused electron beam remains on the (sub)grain in question.

Characterization of AA7075/AA5356 gradient transition zone in an electron beam wire-feed additive manufactured sample

2021 ◽  
Vol 172 ◽  
pp. 110867
Author(s):  
V. Utyaganova ◽  
A. Filippov ◽  
S. Tarasov ◽  
N. Shamarin ◽  
D. Gurianov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Transition Zone ◽  
Feed Additive ◽  
Wire Feed
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