Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity
Using Geant4 toolkit the changes of the flux density and of the dose rates of the secondary cosmic radiation at the heights up to 50 m from the land surface (at a depth of atmosphere about 1030 g/cm²) and depending on solar magnetic activity were estimated. For changes of Wolf’s number (sunspots) in...
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| Format: | Article |
| Language: | English |
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KamGU by Vitus Bering
2021-04-01
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| Series: | Vestnik KRAUNC: Fiziko-Matematičeskie Nauki |
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| Online Access: | http://krasec.ru/zelinskiy-34/ |
| _version_ | 1819327211779391488 |
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| author | Zelinskiy, A.S. Yakovlev, G.A. |
| author_facet | Zelinskiy, A.S. Yakovlev, G.A. |
| author_sort | Zelinskiy, A.S. |
| collection | DOAJ |
| description | Using Geant4 toolkit the changes of the flux density and of the dose rates of the secondary cosmic radiation at the heights up to 50 m from the land surface (at a depth of atmosphere about 1030 g/cm²) and depending on solar magnetic activity were estimated. For changes of Wolf’s number (sunspots) in the range of 0 — 200 the flux density of reflected from air and the soil g- and b- particles changes from 5.7 to 7 and 0.10 – 0.13 m-²s-¹ respectively, for energy from 0 keV to several units of GeV in the ground atmosphere on one meter from the earth. These estimates are much lower than those estimates, for radiation created by the soil and atmospheric radionuclides, which had been received earlier. In comparison with a contribution of radionuclides of the soil of flux density of secondary cosmic radiation about 0.01% and 0.1%, for gamma and beta radiation respectively. The received assessment of the dose rate transferred by secondary cosmic radiation about 0.7% from rate of the formed by soil’s radionuclides. In addition, an assessment of change in characteristics of secondary cosmic radiation depending on the level of solar magnetic activity presented in work. It is found that change of radiometric and dosimetric characteristics of secondary cosmic radiation depending on solar magnetic activity can be over 40%. It well repeats the changes of a dose found during a transcontinental flight. We found that the optimal average energy of spectrum of primary protons is 2.7 GeV. We can apply this feature to standards to find the most intensive periods of a secondary space gamma radiation and to use them in the experimental data, without involving the use of the Geant4. We have not found any significant contribution of secondary cosmic radiation reflected from the earth’s surface. This allows us to refuse from taking into account the soil layer in the model. |
| first_indexed | 2024-12-24T13:07:14Z |
| format | Article |
| id | doaj.art-e507aeec877b486490da39f8f60c5c93 |
| institution | Directory Open Access Journal |
| issn | 2079-6641 2079-665X |
| language | English |
| last_indexed | 2024-12-24T13:07:14Z |
| publishDate | 2021-04-01 |
| publisher | KamGU by Vitus Bering |
| record_format | Article |
| series | Vestnik KRAUNC: Fiziko-Matematičeskie Nauki |
| spelling | doaj.art-e507aeec877b486490da39f8f60c5c932022-12-21T16:53:58ZengKamGU by Vitus BeringVestnik KRAUNC: Fiziko-Matematičeskie Nauki2079-66412079-665X2021-04-012021111412110.26117/2079-6641-2021-34-1-114-12110.26117/2079-6641-2021-34-1-114-121Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activityZelinskiy, A.S.0Yakovlev, G.A.1Tomsk Polytechnic UniversityTomsk State UniversityUsing Geant4 toolkit the changes of the flux density and of the dose rates of the secondary cosmic radiation at the heights up to 50 m from the land surface (at a depth of atmosphere about 1030 g/cm²) and depending on solar magnetic activity were estimated. For changes of Wolf’s number (sunspots) in the range of 0 — 200 the flux density of reflected from air and the soil g- and b- particles changes from 5.7 to 7 and 0.10 – 0.13 m-²s-¹ respectively, for energy from 0 keV to several units of GeV in the ground atmosphere on one meter from the earth. These estimates are much lower than those estimates, for radiation created by the soil and atmospheric radionuclides, which had been received earlier. In comparison with a contribution of radionuclides of the soil of flux density of secondary cosmic radiation about 0.01% and 0.1%, for gamma and beta radiation respectively. The received assessment of the dose rate transferred by secondary cosmic radiation about 0.7% from rate of the formed by soil’s radionuclides. In addition, an assessment of change in characteristics of secondary cosmic radiation depending on the level of solar magnetic activity presented in work. It is found that change of radiometric and dosimetric characteristics of secondary cosmic radiation depending on solar magnetic activity can be over 40%. It well repeats the changes of a dose found during a transcontinental flight. We found that the optimal average energy of spectrum of primary protons is 2.7 GeV. We can apply this feature to standards to find the most intensive periods of a secondary space gamma radiation and to use them in the experimental data, without involving the use of the Geant4. We have not found any significant contribution of secondary cosmic radiation reflected from the earth’s surface. This allows us to refuse from taking into account the soil layer in the model.http://krasec.ru/zelinskiy-34/simulationcosmic radiationgeant4monte-carloatmospherebackground radiationwolf’s numbersмоделированиекосмическое излучениеgeant4монте-карло |
| spellingShingle | Zelinskiy, A.S. Yakovlev, G.A. Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity Vestnik KRAUNC: Fiziko-Matematičeskie Nauki simulation cosmic radiation geant4 monte-carlo atmosphere background radiation wolf’s numbers моделирование космическое излучение geant4 монте-карло |
| title | Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity |
| title_full | Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity |
| title_fullStr | Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity |
| title_full_unstemmed | Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity |
| title_short | Dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity |
| title_sort | dependence of cosmic ray component in background of atmosphere surface from solar magnetic activity |
| topic | simulation cosmic radiation geant4 monte-carlo atmosphere background radiation wolf’s numbers моделирование космическое излучение geant4 монте-карло |
| url | http://krasec.ru/zelinskiy-34/ |
| work_keys_str_mv | AT zelinskiyas dependenceofcosmicraycomponentinbackgroundofatmospheresurfacefromsolarmagneticactivity AT yakovlevga dependenceofcosmicraycomponentinbackgroundofatmospheresurfacefromsolarmagneticactivity |