scholarly journals Determination of the photon spectrum of a therapeutic linear accelerator near the maze entrance: Comparison of Monte Carlo modeling and measurements using scintillation detectors corrected for pulse pile‐up

2020 ◽  
Vol 47 (9) ◽  
pp. 4522-4530
Author(s):  
Mohammad A. Z. Qutub ◽  
Richard P. Hugtenburg ◽  
Ihsan A. M. Al‐Affan
2018 ◽  
Author(s):  
Fethi Bezoubiri ◽  
Asma Alem-Bezoubiri ◽  
Saad Khoudri ◽  
Mehenna Arib

2021 ◽  
Vol 237 ◽  
pp. 106693
Author(s):  
Gustavo Haquin ◽  
Hovav Zafrir ◽  
Danielle Ilzycer ◽  
Noam Weisbrod

2011 ◽  
Vol 39 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Sigrun Saur Almberg ◽  
Jomar Frengen ◽  
Arve Kylling ◽  
Tore Lindmo

2020 ◽  
Vol 27 (6) ◽  
pp. 1047-1070
Author(s):  
Milad Najafzadeh ◽  
Mojtaba Hoseini-Ghafarokhi ◽  
Rezgar Shahi Mayn Bolagh ◽  
Mohammad Haghparast ◽  
Shiva Zarifi ◽  
...  

2017 ◽  
Vol 44 ◽  
pp. 40-41
Author(s):  
J. Akunzi ◽  
P.E. Leni ◽  
R. Gschwind

2015 ◽  
Vol 31 ◽  
pp. e41-e42
Author(s):  
J. Akunzi ◽  
P.E. Leni ◽  
C. De Conto ◽  
R. Gschwind

Author(s):  
D. R. Liu ◽  
S. S. Shinozaki ◽  
R. J. Baird

The epitaxially grown (GaAs)Ge thin film has been arousing much interest because it is one of metastable alloys of III-V compound semiconductors with germanium and a possible candidate in optoelectronic applications. It is important to be able to accurately determine the composition of the film, particularly whether or not the GaAs component is in stoichiometry, but x-ray energy dispersive analysis (EDS) cannot meet this need. The thickness of the film is usually about 0.5-1.5 μm. If Kα peaks are used for quantification, the accelerating voltage must be more than 10 kV in order for these peaks to be excited. Under this voltage, the generation depth of x-ray photons approaches 1 μm, as evidenced by a Monte Carlo simulation and actual x-ray intensity measurement as discussed below. If a lower voltage is used to reduce the generation depth, their L peaks have to be used. But these L peaks actually are merged as one big hump simply because the atomic numbers of these three elements are relatively small and close together, and the EDS energy resolution is limited.


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