Ball Lightining High Voltage Erosional Water Discharge Emelin英文电子书.pdf

from http://balllightning.narod.ru/hvewd.html High Voltage Erosional Water Discharge Overview General view and different stages of the discharge 1. Initial stage of the discharge - spider. 2. Formation of plasma column and/or mushroom-shaped object. 3. Formation of an autonomous object 4. Relaxation stage Evidences of energy storing - experiments on interaction of the objects with cotton wool and metal wires 1. Interaction of LLPF-WD with a metal wire. 2. Burning up of cotton wool. Spectral characteristics of LLPF-WD 1. Near UV observations 2. Near IR observation. 3. Blue-green spectral range images. Some effects - guiding, splitting and branching of the objects Almost spherical LLPF-WD Objects of oval and irregular forms Objects with envelopes Polychromic objects Overview Our colleagues G.D.Shabanov, A.I.Egorov and S.I.Stepanov from Petersburg Nuclear Physics Institute (PNPI), Gatchina, discovered and investigate a new type of high-voltage axial-symmetric erosional discharge between underwater ring-shaped anode made from a wire and a rod cathode, isolated from the water by a quartz tube. In this discharge, further referred to as high voltage erosional water discharge (HVEWD), long-living autonomous plasma formations (LLPF-WD) appear, which resemble the ball lightning in some of their properties [1,2]. These objects usually have the form of a round luminescent volume 10-20 cm in size with sufficiently sharp top and lateral edges; they float up from the water surface like a bubble. During the lifetime, which is about 0.3-0.5 s, their radiation intensity decreases monotonically from dazzle to barely visible, and the round shape disappears gradually. Despite significant difference of parameters of the ball lightning and of the LLPF-WD, this discharge is very interesting and important both for understanding of the properties of the natural objects and