Time and place: 2020.10.29, 19:00 pm, Skype Meeting

Presenter: Gregory S. Nusinovich

Title: Remote detection of excess ionizing radiation by using focused powerful terahertz wave beams

Abstract：

A high-power source of sub-THz radiation allows one to remotely focus this radiation in a small volume where the RF electric field will concealed radioactive materials as a new application of gyrotrons.

In this lecture, I am planning to start by describing the concept of remote detection of excess ionizing radiation by using high-power gyrotrons and some experiments with the 200kW, 0.67 THz Gyrotron. Then, I will focus on the working conditions of remote detection: formation of the breakdown-prone volume, production of free electrons by gamma rays and minimum detectable mass. Next step will be atmospheric conditions on the propagation and focusing of THz wave beams. The last part of this lecture will be devoted to plasma formation.