منابع مشابه
Field shaping in electron beam therapy.
In the treatment of superficial lesions with 8-13 MeV electrons, lead shields are often used to protect the underlying tissue. Measurements were made with film and ion chamber to analyse various aspects of external and internal shielding in electron beam therapy. Data were obtained on the thickness of lead required for shielding, the effect of blocking on dose-rate, electron-backscattering from...
متن کاملShaping single walled nanotubes with an electron beam
A. Zobelli,1,2,* A. Gloter,1 C. P. Ewels,3 and C. Colliex1 1Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR 8502, F-91405 Orsay Cedex, France 2Technische Universität Dresden, Institüt für Physikalische Chemie und Elektrochemie, D-1062 Dresden, Germany 3Université de Nantes, Nantes Atlantique Universités, CNRS, Institut des Matériaux Jean Rouxel (IMN), UMR6502, BP32229, F-44...
متن کاملGenerating a quasiellipsoidal electron beam by 3D laser-pulse shaping.
A generic 3D laser-pulse-shaping scheme is proposed towards the generation of a uniform ellipsoidal particle distribution, an ideal distribution due to the linear dependence of the space-charge force on the particle position. The shaping is accomplished via spatiotemporal coupling of the laser dynamics via chromatic aberration in an optical lens. Particle tracking simulations show that the elec...
متن کاملMicro-Shaping of Nanopatterned Surfaces by Electron Beam Irradiation
We show that planar nanopatterned thin films on standard polycarbonate (PC) compact discs (CD) can be micro-shaped in a non-contact manner via direct e-beam exposure. The shape of the film can be controlled by proper selection of the e-beam parameters. As an example of application, we demonstrate a two-dimensional (2D) array of micro-lenses/reservoirs conformally covered by an Al 2D nanohole ar...
متن کاملPotential therapeutic misadministration due to inappropriate electron beam field shaping
Lead or cerrobend blocking strips are used to shape electron treatment fields when an appropriate custom insert is not available. For the Varian 2100C accelerator, the structural supports of the electron applicators impede the free placement of these field-shaping strips on the open custom insert frame while placement at the top of the applicator is unimpeded. We have investigated the dosimetri...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2015
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927615012301