Results 131 to 140 of about 262,234 (167)
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Ion Deposited Carbon Coatings.
1983Abstract : The overall objective of this program is to demonstrate a system capable of reproducibly coating polycarbonate plastic sheet with ion deposited transparent carbon. The carbon coatings are to be characterized on the plastic sheet for potential use as a durable, abrasion resistant coating for windshield and canopy assemblies.
M. Stein, S. Aisenberg
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Strip injection for carbon ion synchrotrons
Review of Scientific Instruments, 2007Requirements and effects of strip injection of C4+ at 6MeV∕u into carbon ion synchrotrons are studied. The setup is composed of three chicane dipoles, one Lambertson septum, and one carbon stripping foil at a thickness of 60μg∕cm2. The required length of the injection section is about 4.1m.
S Y, Lee, W M, Tam, Z, Liu
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Health and Technology
PurposeThis article summarizes the short lecture on gantries given at the "Hadrontherapy: status and perspectives. Development of a hadrontherapy facility: learning from the existing" event.Methods and materialsAn introduction to gantries is given describing what a gantry is and which are the main difficulties and choices for an ion gantry.
Pullia, M. G. +26 more
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PurposeThis article summarizes the short lecture on gantries given at the "Hadrontherapy: status and perspectives. Development of a hadrontherapy facility: learning from the existing" event.Methods and materialsAn introduction to gantries is given describing what a gantry is and which are the main difficulties and choices for an ion gantry.
Pullia, M. G. +26 more
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Comparison of Carbon Ions Versus Protons
The Cancer Journal, 2009At present, beam ion beam therapy has started to spread worldwide. In Europe and Asia, combined carbon/proton facilities are favored, but in the US, only proton centers are under construction. This development is partially due to the different funding procedures and partially due to the more complex physical and especially biologic features of the ...
Uli, Weber, Gerhard, Kraft
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Erosion Resistance of Carbon-Carbon Ion Optics
Journal of Propulsion and Power, 2001A principal consideration in the design of ion thrusters for spacecraft propulsion is erosion of the downstream grid in the ion optics. Achieving adequate lifetime (10,000 h or more for many potential missions) without grid wear-through can impose signi cant constraints on thruster performance.
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Biological characteristics of carbon-ion therapy
International Journal of Radiation Biology, 2009Radiotherapy using charged and/or high-linear energy transfer (LET) particles has a long history, starting with proton beams up to now carbon-ions. Radiation quality of particle beams is different from conventional photons, and therefore the biological effects of high-LET irradiation have attracted scientific interests of many scientists in basic and ...
Koichi, Ando, Yuki, Kase
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[Particle therapy: carbon ions].
Bulletin du cancer, 2010Carbon ion therapy is an innovative radiation therapy. It has been first proposed in the forties by Robert Wilson, however the first dedicated centres for human care have been build up only recently in Japan and Germany. The interest of carbon ion is twofold: 1) the very sharp targeting of the tumour with the so called spread out Bragg peak that ...
Pascal, Pommier +4 more
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Ion implantation in tetrahedral amorphous carbon
Physical Review B, 1995Tetrahedral amorphous carbon (ta-C) is a dense form of amorphous carbon with a structure consisting of a highly tetrahedral bonding network. Approximately 20% of the atoms in ta-C are ${\mathit{sp}}^{2}$ hybridized and the presence of these sites plays an important role in the electrical and optical properties of the material.
, McCulloch +4 more
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Primary radical ions in irradiated carbonates
Physical Chemistry Chemical PhysicsThe decomposition of primary radical cations in irradiated carbonates via proton transfer is thermodynamically favorable but kinetically hindered.
Irina S. Tretyakova +1 more
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