Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 57615 10.12737/stp-92202305 Results of current research Results of current research Results of current research Precipitation-related increase events of the electromagnetic component of secondary cosmic rays: Spectral analysis Precipitation-related increase events of the electromagnetic component of secondary cosmic rays: Spectral analysis Балабин Юрий Васильевич Balabin Yuriy Vasilyevich balabin@pgia.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Германенко Алексей Владимирович Germanenko Aleksey Vladimirovich alex.germanenko@gmail.com

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Гвоздевский Борис Борисович Gvozdevsky Boris Borisovich gvozdevsky@pgia.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Маурчев Евгений Александрович Maurchev Evgeniy Aleksandrovich maurchev@pgia.ru Михалко Евгения Александровна Mikhalko Evgeniya Aleksandrovna mikhalko@pgia.ru Полярный геофизический институт КНЦ РАН Апатиты Россия Polar Geophysical Institute KSC RAS Apatity Russian Federation Полярный геофизический институт КНЦ РАН Апатиты Россия Polar Geophysical Institute KSC RAS Apatity Russian Federation Полярный геофизический институт КНЦ РАН Апатиты Россия Polar Geophysical Institute KSC RAS Apatity Russian Federation Полярный геофизический институт КНЦ РАН Апатиты Россия Polar Geophysical Institute KSC RAS Apatity Russian Federation Полярный геофизический институт Россия Полярный геофизический институт Russian Federation 29 06 2023 29 06 2023 9 2 37 47 10 03 2023 04 04 2023 https://zh-szf.ru/en/nauka/article/57615/view

We report the measurement results of differential spectra of electromagnetic radiation in the range 0.1–4 MeV, which occurs in the atmosphere as a component of secondary cosmic rays. Spectral monitoring was performed using a spectrometer based on the Nai (TL) crystal in 2022–2023. The main purpose of the measurements was to determine spectral characteristics of the electromagnetic radiation during increase events, when the electromagnetic radiation flux from the atmosphere rises by tens of percent with respect to the background level. From a thorough analysis of the spectra of many dozens of events, we have drawn a conclusion that although the lines of natural radionuclides are present on the spectra and contribute their share, their total contribution to the increase events is ~0.1 of the total energy supplied during an increase. We unambiguously conclude that the effect of increasing electromagnetic radiation during precipitation is not due to the presence of radionuclides in precipitation.

We report the measurement results of differential spectra of electromagnetic radiation in the range 0.1–4 MeV, which occurs in the atmosphere as a component of secondary cosmic rays. Spectral monitoring was performed using a spectrometer based on the Nai (TL) crystal in 2022–2023. The main purpose of the measurements was to determine spectral characteristics of the electromagnetic radiation during increase events, when the electromagnetic radiation flux from the atmosphere rises by tens of percent with respect to the background level. From a thorough analysis of the spectra of many dozens of events, we have drawn a conclusion that although the lines of natural radionuclides are present on the spectra and contribute their share, their total contribution to the increase events is ~0.1 of the total energy supplied during an increase. We unambiguously conclude that the effect of increasing electromagnetic radiation during precipitation is not due to the presence of radionuclides in precipitation.

 secondary cosmic rays electromagnetic radiation scintillation detector differential spectrum radionuclides increase secondary cosmic rays electromagnetic radiation scintillation detector differential spectrum radionuclides increase The work was financially supported by the Russian Science Foundation (Grant No. 18-77-10018) The work was financially supported by the Russian Science Foundation (Grant No. 18-77-10018)

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