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<article article-type="research-article" dtd-version="1.3" xml:lang="en">
  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>St. Petersburg Polytechnic University Journal: Physics and Mathematics</journal-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Научно-технические ведомости СПбГПУ. Физико-математические науки</trans-title>
        </trans-title-group>
      </journal-title-group>
      <issn pub-type="epub">2304-9782, 2618-8686, 2405-7223</issn>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">11</article-id>
      <title-group>
        <article-title>The spatial distribution features of Сherenkov photon flux in the core of an electron-photon extensive atmospheric shower induced by a 5 GeV primary gamma-quantum</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Особенности пространственного распределения черенковских фотонов в стволе широкого атмосферного ливня, вызванного гамма-квантом с энергией 5 ГэВ</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Vasil’ev</surname>
            <given-names>Gennadiy</given-names>
          </name>
          <email>Gennady.Vasilyev@mail.ioffe.ru</email>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Kholupenko</surname>
            <given-names>Evgeniy</given-names>
          </name>
          <email>eugene@astro.ioffe.ru</email>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Bayko</surname>
            <given-names>Denis</given-names>
          </name>
          <email>baiko@astro.ioffe.ru</email>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Bykov</surname>
            <given-names>Andrey</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
          <email>byk@astro.ioffe.ru</email>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Krasil’shchikov</surname>
            <given-names>Alexander</given-names>
          </name>
          <email>kra@astro.ioffe.ru</email>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pavlov</surname>
            <given-names>Georgiy</given-names>
          </name>
          <email>pavlov@astro.psu.edu</email>
        </contrib>
      </contrib-group>
      <aff id="aff1">Ioffe Institute</aff>
      <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2011-12-10">
        <day>10</day>
        <month>12</month>
        <year>2011</year>
      </pub-date>
      <issue>4</issue>
      <issue-id pub-id-type="publisher-id">134</issue-id>
      <fpage>79</fpage>
      <lpage>86</lpage>
      <abstract xml:lang="en">
        <p>Modeling of the electromagnetic component of an extensive atmospheric shower induced by a 5 GeV primary gamma-quantum is performed. It is shown that at 5 km a.s.l. the mean value of Cherenkov photon flux is 0.2 - 0.5 photon/m2 depending on the distance from the axis of shower (within the distance of 200 m).</p>
      </abstract>
      <kwd-group xml:lang="en">
        <kwd>gamma-RAYS</kwd>
        <kwd>cherenkov radiation</kwd>
        <kwd>extensive atmospheric showers</kwd>
        <kwd>simulation</kwd>
        <kwd>ultrarelativistic electrons</kwd>
      </kwd-group>
    </article-meta>
  </front>
</article>
