نتایج جستجو برای: cesium ion
تعداد نتایج: 209601 فیلتر نتایج به سال:
Cesiation effect, a significant enhancement of negative ion emission from a gas discharge with decrease of coextracted electron current below negative ion current was observed for the first time on July 1, 1971 by location into discharge a compound with one milligram of cesium [1]. This observation became the basis for the development of Surface Plasma Sources (SPS) for highly efficient product...
The Radio Frequency (RF) negative hydrogen ion source prototype has been chosen for the ITER neutral beam injectors due to its optimal performances and easier maintenance demonstrated at Max-Planck-Institut für Plasmaphysik, Garching in hydrogen and deuterium. One of the key information to better understand the operating behavior of the RF ion sources is the extracted negative ion current densi...
In 1952 Hodgkin and Huxley were able to separate the m e m b r a n e currents which occur in response to step changes in membrane potential, upon voltage c lamping the squid giant axon, into two major current components : an initial transient component mainly carried under normal conditions by sodium ions and a delayed component mainly carried by potassium ions. Tetrodotoxin ( T T X ) specifica...
Modification of silica-supported vanadium oxide (VS) photocatalysts with alkali metal ions enhanced the photocatalytic activity of the vanadium(V) mononuclear complex for oxidative decomposition of gaseous organic compounds into carbon dioxide. Action spectrum analysis revealed that the onset wavelength for cesium-ion-modified VS was 420 nm, which was ca. 20 nm longer than that with a titania p...
The linac power upgrade program is now in progress, after a successful recovery from the earthquake disaster. The power upgrade includes an ion source, a RFQ, and a 400 MeV annular-ring coupled structure (ACS) linac. We started a full-scale development of a cesium-seeded RFdriven negative hydrogen ion source. The ion source extracted a beam current of more than 60 mA with a duty factor of 2.5 %...
This experiment demonstrates the formation of nanometer-scale features in a gold substrate using a self-assembled monolayer (SAI{) of nonanethiolate as a resist for a patterned beam of neutral cesium atoms. The mask used to pattern the atomic beam rvas a si l icon nitr ide membrane perforated with nmand plm-scale holes. A dose of ^,3 monolayers of cesium damaged the SAI,I suff iciently to al lo...
ITER operation relies on heating neutral beam injectors (HNB) based on negative ion deuterium beams accelerated at 1 MeV, with up to one hour 17 MW power, uniform intensity and low divergence. A neutral beam test facility is being built at Consorzio RFX to demonstrate the feasibility of a prototype injector with such demanding specifications and to optimize its performances. It comprises SPIDER...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید