Regular Article – Plasma Physics
The plasma nanosphere cooling rate simulation in the presence of the coherent electromagnetic waves with Gaussian profile
Department of Laser and Photonics, Faculty of Physics, University of Kashan, Kashan, Islamic Republic of Iran
Accepted: 16 May 2022
Published online: 31 May 2022
Using cold atmospheric plasma (CAP) could promise a breakthrough in the fight against cancer cells, providing an alternative to surgical and chemical therapies. Here, the reduction rate of the temperature of plasma nanosphere is simulated and studied after the injection of electromagnetic waves into it. For this purpose, the plasma nanosphere is irradiated by a laser beam with Gaussian profile and the variation rate of the temperature is investigated. Diagrams of the variation rate of the plasma temperature are presented in terms of some parameters such as the plasma frequency, the radius of the plasma nanosphere, the wavelength of the laser beam, the temperature of the electrons, the relative distance between the front mirror of laser structure and nanosphere center as well as the position of the beam waist center with respect to the center of the nanosphere. In this regard, the temperature of the plasma nanosphere can be reduced by laser irradiation, thus observing the cooling of the plasma. These calculations are performed for the plasma in the collisional approximation. The results obtained can be potentially employed for designing a new type of CAP-based cancer treatment, being useful for the destruction of cancerous tissues and the delivery of drugs to them.
© This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2022