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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solar-Terrestrial Physics</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solar-Terrestrial Physics</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Solar-Terrestrial Physics</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">2500-0535</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">30598</article-id>
   <article-id pub-id-type="doi">10.12737/stp-53201908</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Results of current research</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Results of current research</subject>
    </subj-group>
    <subj-group>
     <subject>Results of current research</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Calculating the ionization rate induced by GCR and SCR protons in Earth’s atmosphere</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Calculating the ionization rate induced by GCR and SCR protons in Earth’s atmosphere</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Маурчев</surname>
       <given-names>Евгений Александрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Maurchev</surname>
       <given-names>Evgeniy Aleksandrovich</given-names>
      </name>
     </name-alternatives>
     <email>maurchev@pgia.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Балабин</surname>
       <given-names>Юрий Васильевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Balabin</surname>
       <given-names>Yuriy Vasilyevich</given-names>
      </name>
     </name-alternatives>
     <email>balabin@pgia.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Германенко</surname>
       <given-names>Алексей Владимирович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Germanenko</surname>
       <given-names>Aleksey Vladimirovich</given-names>
      </name>
     </name-alternatives>
     <email>alex.germanenko@gmail.com</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Михалко</surname>
       <given-names>Евгения Александровна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Mikhalko</surname>
       <given-names>Evgeniya Aleksandrovna</given-names>
      </name>
     </name-alternatives>
     <email>mikhalko@pgia.ru</email>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Гвоздевский</surname>
       <given-names>Борис Борисович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Gvozdevsky</surname>
       <given-names>Boris Borisovich</given-names>
      </name>
     </name-alternatives>
     <email>gvozdevsky@pgia.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-5"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Полярный геофизический институт КНЦ РАН</institution>
     <city>Апатиты</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Polar Geophysical Institute KSC RAS</institution>
     <city>Apatity</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Полярный геофизический институт КНЦ РАН</institution>
     <city>Апатиты</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Polar Geophysical Institute KSC RAS</institution>
     <city>Apatity</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Полярный геофизический институт КНЦ РАН</institution>
     <city>Апатиты</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Polar Geophysical Institute KSC RAS</institution>
     <city>Apatity</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Полярный геофизический институт</institution>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Полярный геофизический институт</institution>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-5">
    <aff>
     <institution xml:lang="ru">Полярный геофизический институт КНЦ РАН</institution>
     <city>Апатиты</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Polar Geophysical Institute KSC RAS</institution>
     <city>Apatity</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <volume>5</volume>
   <issue>3</issue>
   <fpage>68</fpage>
   <lpage>74</lpage>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/30598/view">https://zh-szf.ru/en/nauka/article/30598/view</self-uri>
   <abstract xml:lang="ru">
    <p>This paper explores the applied use of the RUSCOSMICS software package [http://ruscosmics.ru] designed to simulate propagation of primary cosmic ray (CR) particles through Earth’s atmosphere and collect information about characteristics of their secondary component. We report the results obtained for proton fluxes with energy distributions corresponding to the differential spectra of galactic CR (GCR) and solar CR (SCR) during ground level enhancement (GLE) events GLE65 and GLE67. We examine features of the geometry of Earth’s atmosphere, parametrization methods, and describe a primary particle generator. The typical energy spectra of electrons obtained both for GCR and for GLE65 provide information that allows us to quantitatively estimate the SCR contribution to the enhancement of secondary CR fluxes. We also present altitude dependences of ionization rate for GCR and both the GLE events for several geomagnetic cutoff rigidity values. The conclusion summarizes and discusses the prospects for future research.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>This paper explores the applied use of the RUSCOSMICS software package [http://ruscosmics.ru] designed to simulate propagation of primary cosmic ray (CR) particles through Earth’s atmosphere and collect information about characteristics of their secondary component. We report the results obtained for proton fluxes with energy distributions corresponding to the differential spectra of galactic CR (GCR) and solar CR (SCR) during ground level enhancement (GLE) events GLE65 and GLE67. We examine features of the geometry of Earth’s atmosphere, parametrization methods, and describe a primary particle generator. The typical energy spectra of electrons obtained both for GCR and for GLE65 provide information that allows us to quantitatively estimate the SCR contribution to the enhancement of secondary CR fluxes. We also present altitude dependences of ionization rate for GCR and both the GLE events for several geomagnetic cutoff rigidity values. The conclusion summarizes and discusses the prospects for future research.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>cosmic rays</kwd>
    <kwd>astrophysics</kwd>
    <kwd>Monte Carlo method</kwd>
    <kwd>GEANT4</kwd>
    <kwd>particle physics</kwd>
    <kwd>numerical simulation</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>cosmic rays</kwd>
    <kwd>astrophysics</kwd>
    <kwd>Monte Carlo method</kwd>
    <kwd>GEANT4</kwd>
    <kwd>particle physics</kwd>
    <kwd>numerical simulation</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
  <p></p>
 </body>
 <back>
  <ref-list>
   <ref id="B1">
    <label>1.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Agostinelli S., Allison J., Amako K., Apostolakis J., Araujo H., Arce P., et al. Geant4 - a simulation toolkit. Nuclear Instruments and Methods A. 2003, vol. 506, iss. 3, pp. 250-303. DOI: 10.1016/S0168-9002(03)01368-8.</mixed-citation>
     <mixed-citation xml:lang="en">Agostinelli S., Allison J., Amako K., Apostolakis J., Araujo H., Arce P., et al. Geant4 - a simulation toolkit. Nuclear Instruments and Methods A. 2003, vol. 506, iss. 3, pp. 250-303. DOI: 10.1016/S0168-9002(03)01368-8.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B2">
    <label>2.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Bazilevskaya G.A., Usoskin I.G., Flückiger E.O., Harrison R.G., Desorgher L., Bütikofer R., Krainev M.B., Makhmutov V.S., Stozhkov Y.I., Svirzhevskaya A.K., Svirzhevsky N.S., Kovaltsov G.A. Cosmic ray induced ion production in the atmosphere. Space Sci. Rev. 2008, vol. 137, iss. 1-4, pp. 149-173. DOI: 10.1007/s11214-008-9339-y.</mixed-citation>
     <mixed-citation xml:lang="en">Bazilevskaya G.A., Usoskin I.G., Flückiger E.O., Harrison R.G., Desorgher L., Bütikofer R., Krainev M.B., Makhmutov V.S., Stozhkov Y.I., Svirzhevskaya A.K., Svirzhevsky N.S., Kovaltsov G.A. Cosmic ray induced ion production in the atmosphere. Space Sci. Rev. 2008, vol. 137, iss. 1-4, pp. 149-173. DOI: 10.1007/s11214-008-9339-y.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B3">
    <label>3.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">GEANT4 Physics Reference Manual. URL: http://geant4-userdoc.web.cern.ch/geant4-userdoc/UsersGuides/PhysicsReference Manual/fo/PhysicsReferenceManual.pdf (accessed June 10, 2019).</mixed-citation>
     <mixed-citation xml:lang="en">GEANT4 Physics Reference Manual. URL: http://geant4-userdoc.web.cern.ch/geant4-userdoc/UsersGuides/PhysicsReference Manual/fo/PhysicsReferenceManual.pdf (accessed June 10, 2019).</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B4">
    <label>4.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">GOST 25645.122-85. Protony galakticheskikh kosmicheskikh luchei. Energeticheskie spectry [State Standard 25645.122-85. Protons of Galactic Cosmic Rays. Energy Spectra]. Moscow, 1985, p. 2.</mixed-citation>
     <mixed-citation xml:lang="en">GOST 25645.122-85. Protony galakticheskikh kosmicheskikh luchei. Energeticheskie spectry [State Standard 25645.122-85. Protons of Galactic Cosmic Rays. Energy Spectra]. Moscow, 1985, p. 2.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B5">
    <label>5.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Maurchev E.A., Balabin Yu. V. RUSCOSMIC - the new software toolbox for detailed analysis of cosmic rays interactions with matter. Solar-Terrestrial Physics. 2016, vol. 2, no. 4, pp. 3-10. DOI: 10.12737/24269.</mixed-citation>
     <mixed-citation xml:lang="en">Maurchev E.A., Balabin Yu. V. RUSCOSMIC - the new software toolbox for detailed analysis of cosmic rays interactions with matter. Solar-Terrestrial Physics. 2016, vol. 2, no. 4, pp. 3-10. DOI: 10.12737/24269.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B6">
    <label>6.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Maurchev E.A., Balabin Yu.V., Gvozdevsky B.B., Vashenyuk E.V. A new numerical model for investigating cosmic rays in the Earth’s atmosphere. Bull. Russ. Acad. Sci. Phys. 2015, vol. 79, no. 5, pp. 657-659. DOI: 10.3103/S1062873815050305.</mixed-citation>
     <mixed-citation xml:lang="en">Maurchev E.A., Balabin Yu.V., Gvozdevsky B.B., Vashenyuk E.V. A new numerical model for investigating cosmic rays in the Earth’s atmosphere. Bull. Russ. Acad. Sci. Phys. 2015, vol. 79, no. 5, pp. 657-659. DOI: 10.3103/S1062873815050305.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B7">
    <label>7.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Maurchev E.A., Mikhalko E.A., Germanenko A.V., Balabin Yu.V. The experimental methods for validating the results of modeling the cosmic rays interaction with the Earth’s atmosphere. Trudy Kol’skogo nauchnogo tsentra RAN [Proc. of Kola Science Center RAS]. 2018, vol. 9, no. 5-4, pp. 76-81. DOI: 10.25702/KSC.2307-5252.2018.9.5.76-81. (In Russian).</mixed-citation>
     <mixed-citation xml:lang="en">Maurchev E.A., Mikhalko E.A., Germanenko A.V., Balabin Yu.V. The experimental methods for validating the results of modeling the cosmic rays interaction with the Earth’s atmosphere. Trudy Kol’skogo nauchnogo tsentra RAN [Proc. of Kola Science Center RAS]. 2018, vol. 9, no. 5-4, pp. 76-81. DOI: 10.25702/KSC.2307-5252.2018.9.5.76-81. (In Russian).</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B8">
    <label>8.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Perez-Peraza J., Gallegos-Cruz A., Vashenyuk E.V., Balabin Yu.V., Miroshnichenko L.I. Relativistic proton production at the Sun in the October 28th, 2003 solar event. Adv. Space Res. 2006, vol. 38, iss. 3, pp. 418-424. DOI: 10.1016/j.asr. 2005.01.082.</mixed-citation>
     <mixed-citation xml:lang="en">Perez-Peraza J., Gallegos-Cruz A., Vashenyuk E.V., Balabin Yu.V., Miroshnichenko L.I. Relativistic proton production at the Sun in the October 28th, 2003 solar event. Adv. Space Res. 2006, vol. 38, iss. 3, pp. 418-424. DOI: 10.1016/j.asr. 2005.01.082.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B9">
    <label>9.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Perez-Peraza J., Vashenyuk E.V., Gallegos-Cruz A., Balabin Yu.V., Miroshnichenko L.I. Relativistic proton at the Sun in the 20 January 2005 solar event. Adv. Space Res. 2008, vol. 41, iss. 6, pp. 947-954. DOI: 10.1016/j.asr.2007.04.054.</mixed-citation>
     <mixed-citation xml:lang="en">Perez-Peraza J., Vashenyuk E.V., Gallegos-Cruz A., Balabin Yu.V., Miroshnichenko L.I. Relativistic proton at the Sun in the 20 January 2005 solar event. Adv. Space Res. 2008, vol. 41, iss. 6, pp. 947-954. DOI: 10.1016/j.asr.2007.04.054.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B10">
    <label>10.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Picone J.M., Hedin A.E., Drob D.P., Aikin A.C. NRLMSISE-00 empirical model of the atmosphere: Statistical comparisons and scientific issues. J. Geophys. Res. 2002, vol. 107, iss. A12, 1468. DOI: 10.1029/2002JA009430.</mixed-citation>
     <mixed-citation xml:lang="en">Picone J.M., Hedin A.E., Drob D.P., Aikin A.C. NRLMSISE-00 empirical model of the atmosphere: Statistical comparisons and scientific issues. J. Geophys. Res. 2002, vol. 107, iss. A12, 1468. DOI: 10.1029/2002JA009430.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B11">
    <label>11.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Stozhkov Yu.I., Svirzhevsky N.S., Bazilevskaya G.A., Kvashnin A.N., Makhmutov V.S., Svirzhevskaya A.K. Long-term (50 years) measurements of cosmic ray fluxes in the atmosphere. Adv. Space Res. 2009, vol. 44, iss. 10, pp. 1124-1137. DOI: 10.1016/j.asr.2008.10.038.</mixed-citation>
     <mixed-citation xml:lang="en">Stozhkov Yu.I., Svirzhevsky N.S., Bazilevskaya G.A., Kvashnin A.N., Makhmutov V.S., Svirzhevskaya A.K. Long-term (50 years) measurements of cosmic ray fluxes in the atmosphere. Adv. Space Res. 2009, vol. 44, iss. 10, pp. 1124-1137. DOI: 10.1016/j.asr.2008.10.038.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B12">
    <label>12.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Thébault E., Finlay C.C., Beggan C.D., Alken P., Aubert J., Barroiset O., et al. International Geomagnetic Reference Field: the 12th generation. Earth, Planets and Space. 2015, vol. 67, 79. DOI: 10.1186/s40623-015-0228-9.</mixed-citation>
     <mixed-citation xml:lang="en">Thébault E., Finlay C.C., Beggan C.D., Alken P., Aubert J., Barroiset O., et al. International Geomagnetic Reference Field: the 12th generation. Earth, Planets and Space. 2015, vol. 67, 79. DOI: 10.1186/s40623-015-0228-9.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B13">
    <label>13.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Usoskin I.G., Desorgher L., Velinov P., Storini M., Flückiger E.O., Bütikofer R., Kovaltsov G.A. Ionization of the earth’s atmosphere by solar and galactic cosmic rays. Acta Geophysica. 2009, vol. 57, no. 1, pp. 88-101. DOI: 10.2478/s 11600-008-0019-9.</mixed-citation>
     <mixed-citation xml:lang="en">Usoskin I.G., Desorgher L., Velinov P., Storini M., Flückiger E.O., Bütikofer R., Kovaltsov G.A. Ionization of the earth’s atmosphere by solar and galactic cosmic rays. Acta Geophysica. 2009, vol. 57, no. 1, pp. 88-101. DOI: 10.2478/s 11600-008-0019-9.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B14">
    <label>14.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Vashenyuk E.V., Balabin Yu.V., Miroshnichenko L.I. Relativistic solar protons in the ground level event of 23 February 1956: New study. Adv. Space Res. 2008, vol. 41, pp. 926-935. DOI: 10.1016/j.asr.2007.04.063.</mixed-citation>
     <mixed-citation xml:lang="en">Vashenyuk E.V., Balabin Yu.V., Miroshnichenko L.I. Relativistic solar protons in the ground level event of 23 February 1956: New study. Adv. Space Res. 2008, vol. 41, pp. 926-935. DOI: 10.1016/j.asr.2007.04.063.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B15">
    <label>15.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Vashenyuk E.V., Balabin Yu.V., Gvozdevsky B.B. Features of relativistic solar proton spectra derived from ground level enhancement events (GLE) modeling. Astrophysics and Space Sciences Transactions. 2011, vol. 7, iss. 4, pp. 459-463. DOI: 10.5194/astra-7-459-2011.</mixed-citation>
     <mixed-citation xml:lang="en">Vashenyuk E.V., Balabin Yu.V., Gvozdevsky B.B. Features of relativistic solar proton spectra derived from ground level enhancement events (GLE) modeling. Astrophysics and Space Sciences Transactions. 2011, vol. 7, iss. 4, pp. 459-463. DOI: 10.5194/astra-7-459-2011.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B16">
    <label>16.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Velinov P.I.Y., Balabin Yu.V., Maurchev E.A. Calculations of enhanced ionization in strato-troposphere during the greatest ground level enhancement on 23 February 1956 (GLE 05). Compt. rend. Acad. bulg. Sci. 2017, vol. 70, no. 4, pp. 545-554.</mixed-citation>
     <mixed-citation xml:lang="en">Velinov P.I.Y., Balabin Yu.V., Maurchev E.A. Calculations of enhanced ionization in strato-troposphere during the greatest ground level enhancement on 23 February 1956 (GLE 05). Compt. rend. Acad. bulg. Sci. 2017, vol. 70, no. 4, pp. 545-554.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B17">
    <label>17.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">URL: http://ruscosmics.ru (accessed June 10, 2019).</mixed-citation>
     <mixed-citation xml:lang="en">URL: http://ruscosmics.ru (accessed June 10, 2019).</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B18">
    <label>18.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">URL: http://ruscosmics.ru/CR.htm (accessed June 10, 2019).</mixed-citation>
     <mixed-citation xml:lang="en">URL: http://ruscosmics.ru/CR.htm (accessed June 10, 2019).</mixed-citation>
    </citation-alternatives>
   </ref>
  </ref-list>
 </back>
</article>
