TY CONF TI CALCULATION OF ELECTRIC FIELDS OF POSITIVE AND NEGATIVE STREAMER HEADS IN THE AIR KW electrical discharge KW streamer KW positive and negative head KW mathematical modeling KW electric field distribution JO XXIV international conference "Electromagnetic field and materials (fundamental physical research)" AU Beloglovskiy, A.. AU Luzheckiy, A.V. PY 2026 PB INFRA-M Academic Publishing LLC.