DETERMINATION OF COLLECTION EFFICIENCY OF ATMOSPHERIC IONS BY THE SYSTEMS OF PARALLEL CONDUCTIVE PLATES

We present a theory that describes the scenarios of equations of motion of clustered air ions entering into specific systems. The system analyzed here is composed by two or three conductive parallel plates. In the first case (system of two parallel plates) one plate collects air ions which enter into the area between these plates. In the second case (system of three parallel plates) the collector plate is the middle one.Air ions usually are classified into several categories according to their electrical mobility (size). The main categories are: cluster ions (mobility 0.5-3.2 cm2/V.s), intermediate ions (mobility 0.034-0.5 cm2/V.s), and large ions (mobility 0.0042-0.034 cm2/V.s).This theory has an important application on ion counter operations. Usually the apparatus measures the concentrations of only cluster air ions (mobility > 0.5 cm2/V.s). Air ions are deflected by the electric field established by a potential difference of polarized plates. Air ion concentrations are derived from measurement of electrical current caused in the system.Based on this theory, we can determine analytically the efficiency of the collection of air ions of different electrical mobility by above mentioned systems

Seasonal Cycles of Atmospheric Ion and Aerosol Concentrations in an Urban Area

Abstract. Here the results of monitoring campaign on cluster ions and aerosol concentrations are presented. This measurement procedure was carried out in an urban center, Shkodra City. During this campaign there are measured continuously the concentrations of both ions and aerosols. The measured ions belong to cluster ion category, while measured aerosol particles belong to fine and coarse modes. After monitoring process, measurement data undergo a statistical analyze to obtain the seasonal cycles of these concentrations. These variations let us to estimate the contribution of varying factors on their concentrations, as well as their reciprocal interactions. Seasonal variations of ion concentrations show maximums during warm seasons and minimums during cold seasons. In the case of aerosol concentrations, their seasonal variations strongly depend on the aerosol modes

The electric field between non conductive rectangular charged surfaces placed near a small spherical conductive earthed surface and determination of critical density of charge

SIGLEITItal

Potential distribution and discharge initiation potential in dielectric plane in the presence of earthed sphere

Consiglio Nazionale delle Ricerche (CNR). Biblioteca Centrale / CNR - Consiglio Nazionale delle RichercheSIGLEITItal

Electric field of not completely symmetric system earthed sphere-uniformly charged dielectric plan

Consiglio Nazionale delle Ricerche (CNR). Biblioteca Centrale / CNR - Consiglio Nazionale delle RichercheSIGLEITItal

Compiuter Technologies Assist Potential Energy with Experiments

Energy is an important physical quantity to study and reconstruct nature at our own leisure.nbsp; Implementations of new tendencies in Physics show that energy, and other physical quantities, need careful examinations before being applied. Following International and national recommendations, our present work focused on several research studies concerning potential energy. A simple experiment was developed to verify the conservation of energy. At the end, the participants were convinced that it is really difficult to achieve the conservation of energy to its perfect form. They also ended with some intriguing conclusions, similar to the research studies this activity referred to.nbsp;nbsp;nbsp