Distribution of temperature coefficient density for muons in the atmosphere

Kuz'menko, V.S.; Kuzmenko, Vasiliy; Янчуковский, В Л; Yanchukovsky, V. L.

doi:10.12737/szf-34201710

“…Its correct consideration in continuous observations made with muon telescopes requires us to know the distribution of temperature coefficient density for atmospheric muons and the atmospheric temperature profile at a given time. The distribution has been found from calculations [Kuzmin, 1964;Dorman, Yanke, 1971;Dmitrieva et al, 2009;Kuzmenko, Yanchukovsky, 2017] and evaluated using continuous long-term observations [Yanchukovsky, Kuzmenko, 2018]. The results allow us to consider the temperature effect in data from muon telescopes as shown in [Osipenko et al, 2015].…”

Section: Introductionmentioning

confidence: 93%

Muon Intensity Variations and Atmospheric Temperature

Yanchukovsky

¹

2020

Solar-Terrestrial Physics

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Muons in the atmosphere are formed during the decay of pions resulting from nuclear interactions of cosmic rays with nuclei of air atoms. The resulting muons are also unstable particles with a short lifetime. Therefore, not all of them reach the level of observation in the atmosphere. When the atmospheric temperature changes, the distance to the observation level changes too, thus leading to variations in the intensity of muons of temperature origin. These variations, caused by atmospheric temperature variations, are superimposed on continuous observations of muon telescopes. Their exclusion is, therefore, extremely necessary, especially in the data from modern muon telescopes whose statistical accuracy is very high. The contribution of various atmospheric layers to the total temperature effect is not the same for muons. This contribution is characterized by the distribution of the density of temperature coefficients for muons in the atmosphere. Using this distribution and the continuous intensity observations from the muon telescope in Novosibirsk, the inverse problem has been solved, from the solution of which the atmospheric temperature variations over a long period from 2004 to 2011 have been found. The results obtained are compared with aerological sounding data.

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Temperature effect of muons registered under the ground in Yakutsk by telescopes on GAS-discharge counters

Yanchukovsky

¹

2023

Solar-Terrestrial Physics

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The Yakutsk spectrograph of cosmic rays includes a complex of muon telescopes based on gas-discharge and scintillation counters located on the surface and under the ground at depths of 7, 20, and 40 m.w.e. Using continuous observations made by muon telescopes on gas-discharge counters and data on the altitude profile of the atmospheric temperature over Yakutsk for the period from January 2016 to December 2018, we have calculated density distributions of temperature coefficients for muons detected on the surface and at various depths under the ground. To do this, we employed multivariate regression methods and principal component methods. The results obtained are compared with the results of earlier theoretical calculations. The results make it possible to correctly take into account the temperature effect in the data from the complex of muon telescopes on gas-discharge counters.

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Muon intensity variations and atmospheric temperature

Yanchukovsky

¹

2020

Solnechno-Zemnaya Fizika

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Muons in the atmosphere are formed during the decay of pions resulting from nuclear interactions of cosmic rays with nuclei of air atoms. The resulting muons are also unstable particles with a short lifetime. Therefore, not all of them reach the level of observation in the atmosphere. When the atmospheric temperature changes, the distance to the observation level changes too, thus leading to variations in the intensity of muons of temperature origin. These variations, caused by atmospheric temperature variations, are superimposed on continuous observations of muon telescopes. Their exclusion is, therefore, extremely necessary, especially in the data from modern muon telescopes whose statistical accuracy is very high. The contribution of various atmospheric layers to the total temperature effect is not the same for muons. This contribution is characterized by the distribution of the density of temperature coefficients for muons in the atmosphere. Using this distribution and the continuous intensity observations from the muon telescope in Novosibirsk, the inverse problem has been solved, from the solution of which the atmospheric temperature variations over a long period from 2004 to 2011 have been found. The results obtained are compared with aerological sounding data.

show abstract

Distribution of temperature coefficient density for muons in the atmosphere

Cited by 3 publications

References 4 publications

Muon Intensity Variations and Atmospheric Temperature

Muon Intensity Variations and Atmospheric Temperature

Temperature effect of muons registered under the ground in Yakutsk by telescopes on GAS-discharge counters

Muon intensity variations and atmospheric temperature

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