MOSCOW, November 21. Tomsk Polytechnic scientists, together with colleagues from China, simulated magnetic and electric fields corresponding in strength to neutron stars. According to the researchers, fields of such strength can be created by laser radiation using the effect of amplifying the super-resonance of fields in a non-conducting material, discovered in Russia. This phenomenon can help scientists reproduce a magnetic storm right in the laboratory, as well as study the mechanism and effect of its impact on living beings and technological systems. The results are presented in Annalen der physik.
Magnetism is an effect that occurs when moving charged particles or objects with a permanent magnetic moment interact — protons, neutrons and electrons. Its action is described by a space filled with lines of force or lines of tension. The magnetic field arises due to the movement of electrons through some objects, said scientists from Tomsk Polytechnic University.
Inside stars, a magnetic field is created due to the movement of electrically conductive plasma through the mixing of star matter by convection. Such fields are of key importance for the evolution of celestial bodies, experts explained. On Earth, superstrong magnetic fields can be used in studying the properties of stars, plasma and elementary particles, as well as in deep space radio communications.
April 25, 08:00
Scientists from Tomsk Polytechnic University, with the participation of colleagues from the Huaiyin Institute of Technology (PRC), managed to simulate a super-powerful magnetic field using special particles — cenospheres.
The cenosphere is a hollow ball filled with air. It was the thin dielectric shell that, according to the researchers, caused the effect of enhancing the Fano resonance. It is also used in constructing the theory of radiation scattering by metal nanoparticles and explaining the behavior of quantum dots when voltage is applied to them, the researchers explained.
“
“Fano resonance is observed in the case of interaction of two oscillatory processes. One of them is described by a wide spectral band, and the other by a narrow one. In this case, a narrow contour as a result of interference may have an asymmetrical shape,” explained the project leader, professor of the Department of Electronic Engineering at Tomsk Polytechnic University Oleg Minin.
He emphasized that the team has succeeded in developing methods for generating giant magnetic fields when laser radiation is scattered. Scientists were able to show that the generation of such fields can accompany the resonant scattering of light precisely on non-magnetic, non-conducting spheres.
«Compared to homogeneous spheres, the size of the air cavity is an additional design parameter for tuning the maximum field intensity enhancement. We have shown that by adjusting the radius of the air cavity, it is possible to control the interaction of light and dark modes in the dielectric sphere and, as a result, increase the magnetic and electric enhancement fields,” said Minin.
Scientists have strengthened the magnetic field by 35,000,000 times, approaching the values of magnetic induction in neutron magnet stars. Their magnetic field is characterized by a voltage value of 1,000,000,000 Tesla (Tesla). For comparison, the magnetic field strength of our planet is 0.000025-0.000065 Tesla, depending on the geographical location, although in some areas, for example, in the Kursk magnetic anomaly, it can reach 0.0001 Tesla.
The research was carried out within the framework of the «Priority-2030» program of the national project «Science and Universities», of which Tomsk Polytechnic University is a participant.
Свежие комментарии