Abstract

In the atmosphere, after lightning, precipitation is formed and heavy rainfall occurs. This is a well-known process. This natural lighting phenomenon has been practically demonstrated in the laboratory cloud chamber, A laser beam has to be shot into the cloud region of the atmosphere to create high temperature. This high temperature will break the bonds of atmospheric N<sub>2</sub> and O<sub>2</sub> and produce N and O which will be in excited state (N*, O*). These excited N* and O* are very unstable. They immediately fall to the ground state through endothermic reactions. These endothermic reactions absorb heat from the cloud region. As a result, temperature of the cloud region falls, condensation takes place, form rain drops, act as natural seeds are created and it rains. Its use as rain drain by Laser system from ground for Green environment. “Laser photons photo-dissociate atmospheric compounds N<sub>2</sub> and O<sub>2</sub> and form ozone (O<sub>3</sub>) and nitrogen molecules (NO). Increase of O<sub>3</sub> and NO concentration after lightning has also been experimentally observed. That this lightning phenomenon created through artificial lightning by laser system can produce rain in the atmosphere has been practically proved as “Laser-induced water condensation in air”. Scientists have succeeded in obtaining raindrops from an altitude of 45 to 75m of the atmosphere by terawatt mobile laser. IRRA Scientist Group propose laser system of specification: 10<sup>12</sup>watt, 800nm, 500mJ, 120fs and 10Hz for this research project. The results could be of immense benefit to human being.

Highlights

  • Several attempts have been made by various scientist group to create artificial rain by laser

  • Number of radar observations has reported that intense precipitation is not even present in the clouds before the first discharge, but develops abruptly in the same region after discharge from which the lightning flashes originate

  • To create artificial rain by laser, endothermic reactions are to be generated in the cloud region

Read more

Summary

Introduction

Several attempts have been made by various scientist group to create artificial rain by laser. Yoshihara have shown that the pulsed UVlaser irradiation of ambient air induces formation of water droplets or small ice particles in the laboratory. They observed that [O] formed in this process quickly reacts with O2 molecules to form O3 Braun, [1]. A team, called terra-mobile-group (TMG), consisting of scientists from Switzerland, Germany and France, have been trying to create artificial rain by laser. This team has done simulation experiment in laboratory cloud chamber and has observed condensation and water drops formation. As per IRRA Scientist Group, in the atmosphere, these laboratory tiny water drops, come together, through acceleration and turbulences process by wind force to form big rain drops, which act as natural seeding to form another sets of rain drops, rain occurs

Theory and Methodology
Discussion
Additional Uses
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call