Results 251 to 260 of about 1,093,026 (302)

Ion recombination correction in carbon ion beams

Medical Physics, 2016
Purpose:In this work, ion recombination is studied as a function of energy and depth in carbon ion beams.Methods:Measurements were performed in three different passively scattered carbon ion beams with energies of 62 MeV/n, 135 MeV/n, and 290 MeV/n using various types of plane‐parallel ionization chambers.
S, Rossomme, J, Hopfgartner, N D, Lee, A, Delor, R A S, Thomas, F, Romano, A, Fukumura, S, Vynckier, H, Palmans   +8 more
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High-intensity carbon ion injector

Review of Scientific Instruments, 1979
An injector of intense beams of carbon ions is described. The device uses an array of carbon plasma guns to inject ions directly into a magnetically insulated acceleration gap. Ion currents exceed 3 kA with beam energies between 100 and 300 keV (for C+) and 200 and 600 keV (for C++) over a 700-ns pulselength.
S, Humphries, C W, Mendel, G W, Kuswa, S A, Goldstein   +3 more
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All Carbon Dual Ion Batteries

ACS Applied Materials & Interfaces, 2018
Dual ion batteries based on Na+ and PF6- received considerable attention due to their high operating voltage and the abundant Na resources. Here, cheap and easily obtained graphite that served as a cathode material for dual ion battery delivered a very high average discharge platform (4.52 V vs Na+/Na) by using sodium hexafluorophosphate in propylene ...
Zhe Hu, Qiannan Liu, Kai Zhang, Limin Zhou, Lin Li, Mingzhe Chen, Zhanliang Tao, Yong-Mook Kang, Liqiang Mai, Shu-Lei Chou, Jun Chen, Shi-Xue Dou   +11 more
openaire   +3 more sources

Carbonate Ion-Selective Membrane Electrode

Science, 1974
A liquid membrane electrode has been developed with Nernstian response and a high selectivity for carbonate ion. The electrode responds rapidly to carbonate in the 10 -2 M to 10 -6 M range with a selectivity for carbonate over chloride, sulfate, and phosphate of at ...
H B, Herman, G A, Rechnitz
openaire   +2 more sources

Carbonic Acid Eluent Ion Chromatography

Analytical Chemistry, 2019
Alkali metals, amines and alkanolamines are separated on a poly(butadiene)-maleic acid on silica stationary phase using a carbonic acid (H2CO3*) eluent with and without a mineral acid. The H2CO3* eluent is prepared in situ by high pressure permeative introduction of gaseous CO2 through thin membranes supported upon a porous steel disk.
Phitchan Sricharoen, Nunticha Limchoowong, Charles Phillip Shelor, Purnendu K. Dasgupta   +3 more
openaire   +2 more sources

Neoplastic Transformation Induced by Carbon Ions

International Journal of Radiation Oncology*Biology*Physics, 2009
The objective of this experiment was to compare the oncogenic potential of carbon ion beams and conventional photon beams for use in radiotherapy.The HeLa X human skin fibroblast cell line CGL1 was irradiated with carbon ions of three different energies (270, 100, and 11.4 MeV/u). Inactivation and transformation data were compared with those for 15 MeV
D. Bettega, P. Calzolari, P. Hessel, C. Stucchi, W. K. Weyrather   +4 more
openaire   +3 more sources

Ion-implanted graphitic carbons

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1989
Abstract Ion implantation of glassy carbon and other graphitic forms of carbon leads to significantly increased resistance to wear. The effect is observed for a variety of ion species. Nitrogen ion doses as low as 5 × 10 15 ions/cm 2 at 50 keV are effective and the enhancement is related to the damage produced by the incident ions. New and previous
M.J. Kenny, J.T.A. Pollock, L.S. Wielunski   +2 more
openaire   +1 more source

L'hadronthérapie: les ions carbone

Bulletin du Cancer, 2010
Carbon 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, Yi Hu, Marie-Hélène Baron, Olivier Chapet, Jacques Balosso   +4 more
openaire   +1 more source

Ions and carbon nanostructures

Radiation Effects and Defects in Solids, 2013
First experiments on swift ion irradiation of highly oriented pyrolythic graphite led to formation of carbon nanotubes (CNT) at the cascade eruption points. CNT length was in the micron range, which corresponded to an explosive crystallization of the carbon plume with about sound velocity.
Gyulai, József, Tapasztó, Levente, Horváth, Zsolt Endre, Nemes Incze, Péter, Osváth, Zoltán, Biró, László Péter   +5 more
openaire   +2 more sources

Cleaving carbon-carbon bonds in cyclopropenium ions

Journal of the American Chemical Society, 1980
A cyclopropenium ion breaking one of its carbon-carbon bonds furnishes an orbital template which can be exploited by sundry mononuclear and binuclear transition metal fragments.
Eluvathingal D. Jemmis, Roald Hoffmann
openaire   +1 more source