No abstract available

No abstract available

[en] Short communication. 1 fig

[en] Nowadays, Electrostatic precipitator (ESP) is an important large-scale equipment for reducing dust elimination and reducing pollution in industrial production. As the second working step of ESP, dust charging is very important, and its charge directly affects the subsequent work of the electrostatic precipitator and the dust removal efficiency. In this paper, the charging mechanism of dust particles in the discharge area of ESP is studied. The charge and its influencing factors of dust particles with different particle sizes under different mechanisms are analyzed. The research results have certain effect on how to increase the charge of dust particles. The research in this paper is of great significance to improve the dust removal efficiency of ESP. (paper)

[en] High Voltage Engineering Europa B.V. (HVE) has designed a 300 kV AMS system for the measurement of ¹⁴C and of non-radiocarbon isotope species like ³H, ¹⁰Be, ²⁶Al, ⁴¹Ca, ¹²⁹I and actinides. The system features an electrostatic analyzer (ESA) as well as a high resolution analyzing magnet in the low-energy spectrometer, a 300 kV, vacuum insulated tandem accelerator and a high energy (HE) spectrometer comprising two high resolution magnets and an ESA in between. The layout of the system is shown. Located after the terminal stripper is an electrostatic deflector acting as charge state selector (CSS). The CSS fundamentally reduces a specific class of measurement background, especially beneficial for actinides.

[en] Complete text of publication follows. Top hat type electrostatic analysers provide an elegant solution for measurements of low energy electrons and ions in space plasmas and are being considered for a number of future missions. Most of these missions have two important requirements, a large dynamic range and a field-of-view close to 4π. A number of solutions have been implemented to address these, usually consisting of multiple sensors on spinning spacecraft or sensors coupled to bulky actuators. In recent times however, electrostatic techniques have been developed providing significantly lower resource solutions. In this paper, we present details of a prototype instrument that has been developed incorporating additional electrodes addressing both requirements. The electrodes consist of a pair of electrostatic deflector plates, similar to, for example, the PEPE instrument on Deep Space 1, increasing the field of view to approximately ± 40 deg in elevation, and a novel 'top-cap' electrode which modifies the energy band pass of the analyser to reduce the instrument geometric acceptance by more than an order of magnitude. Preliminary results of the performance of the two electrostatic systems will be presented and implications of performance modifications in different operational scenarios discussed.

No abstract available

[en] Conditions of spherical aberrations in electrostatic axially symmetrical mirror consisting of three co-axial cylinders of equal diameters are defined. Such mirror one can to consider as lens-mirror system, where lens role plays the gap between the first and second electrodes, and mirror role plays the gap between the second and third electrodes. Studied mirror could be used in capacity of the objective lens of electron microscope of translucent type

[en] The project has reached the point where the Proof of Concept (POC) electrostatic separator is in the design stage. During the quarter, the design concepts of the TES unit have been finalized with Carpco. During the past quarter, most of the personnel assigned to this project have been performing work elements associated with process/engineering design (Task 3) of the process including the TES unit, the Turbo charger and the product conveying system

[en] The terminal of the Pelletron accelerator in Rehovot was designed so as to transmit freely any beam of a desired charge state through the high energy acceleration tube. Charge selection is accomplished by means of a displaced electrostatic quadrupole triplet. A matching lens further downstream inside the terminal is matching the beam emittance to the high energy tube acceptance. A detailed study of the angular acceptance of the high energy tube was carried out in order to check for possible tube loading. The transmission through the high energy tube is substantially improved by the matching lens both when the charge selector is on and when it is off