title: ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¾Ð±Ð»ÑÑÐµÐ½Ð¸Ñ ÐºÐ¾ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ð¼Ð¸ Ð»ÑÑÐ°Ð¼Ð¸ ÐºÐ¾Ð¼ÐµÑÐ½ÑÑ ÑÐ´ÐµÑ: Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½ÑÐ¹ Ð¸ÑÑÐ¾ÑÐ½Ð¸Ðº ÐºÐ¾Ð¼ÐµÑÐ½ÑÑ Ð²ÑÐ¿ÑÑÐµÐº Ð½Ð° Ð±Ð¾Ð»ÑÑÐ¸Ñ ÑÐ°ÑÑÑÐ¾ÑÐ½Ð¸ÑÑ Ð¾Ñ Ð¡Ð¾Ð»Ð½ÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Simulation of cosmic ray irradiation of comet nuclei: a possible source of cometary outbursts far from the Sun
Creators: name: ÐÐµÐ»Ð¾ÑÑÐ¾Ð², ÐÐ¾Ð¼Ð¸Ð½Ð¸Ðº
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ¾Ð¼ÐµÑÑ
ÐÐ¾ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ðµ Ð»ÑÑÐ¸
ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð¿Ð¾ÑÑ ÐÐ¾Ð¹Ð¿ÐµÑÐ°
Ð¾Ð±Ð»Ð°ÐºÐ¾ ÐÐ¾ÑÑÐ°
Kuiper Belt
Oort Cloud

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description: The subject of the graduate qualification work is âSimulation of cosmic ray irradiation of comet nuclei: a possible source of cometary outbursts far from the Sunâ.The given work is devoted to studying the radiation effect in ice irradiated by high-energy particles: the accumulation of radicals followed by energy release during external heating. This effect is supposed to be the new trigger of cometary outbursts at large heliocentric distances. We conducted several experiments on water ice irradiation by 15 MeV protons and 0.9 MeV electrons at temperatures of 80-85 K. The fast energy release 20Â J g-1Â took place in proton-irradiated ice as two pulses of self-heating at 84 and 106 K. A similar value of energy release was detected in the electron-irradiated ice at temperatures between 82 and 110 K. Based on the received experimental data, we have created the numerical model of comet activity driven by the recombination of trapped radicals. Our calculations show that the examined radiation effect can effectively cause comet activity far from the Sun.