<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0864-084X</journal-id>
<journal-title><![CDATA[Nucleus]]></journal-title>
<abbrev-journal-title><![CDATA[Nucleus]]></abbrev-journal-title>
<issn>0864-084X</issn>
<publisher>
<publisher-name><![CDATA[CUBAENERGIA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-084X2018000200024</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Energy calibration of GaAs:Cr-based Timepix detector with alpha particles]]></article-title>
<article-title xml:lang="es"><![CDATA[Calibración energética de un detector Timepix basado en GaAs:Cr con partículas alfa]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[Dayron]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Smolyanskiy]]></surname>
<given-names><![CDATA[Petr]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leyva]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zhemchugov]]></surname>
<given-names><![CDATA[Alexei]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[Arianna G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Superior de Tecnologías y Ciencias Aplicadas  ]]></institution>
<addr-line><![CDATA[ Havana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Joint Institute for Nuclear Research  ]]></institution>
<addr-line><![CDATA[Dubna Moscow Region]]></addr-line>
<country>Russian Federation</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear  ]]></institution>
<addr-line><![CDATA[ Havana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<numero>64</numero>
<fpage>24</fpage>
<lpage>29</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-084X2018000200024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-084X2018000200024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-084X2018000200024&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The advanced GaAs:Cr material for radiation detection is in the scope of many scientific and technological institutions in the world, as a result of its proved superior properties and economic advantages. The energy calibration of a hybrid GaAs:Cr-based Timepix detector with alpha particles performed in the Dzhelepov Laboratory of Nuclear Problems at Joint Institute for Nuclear Research confirms that the device is able to register these particles in energy range from 3140 to 7687 keV. The mathematical simulation was used to calculate the transmitted energy, making possible the experimental calibration with the use of Mylar as absorbent. By calibrating the detector with characteristic X rays of some target materials and using a two steps fitting procedure was determined the relationship between the photon energies and the registered by the detector TOT counts. The energy calibration with alpha particles was performed according to a linear function and verified with the measurement of the 218Po line of radon in air.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El GaAs:Cr como material de avanzada para la detección de las radiaciones se encuentra en la mira de muchas instituciones científicas y tecnológicas en el mundo, como consecuencia de sus superiores propiedades y ventajas económicas. Los experimentos hechos en el Laboratorio de Problemas Nucleares Dzhelepov del Instituto Unificado de Investigaciones Nucleares para la calibración energética de un detector hibrido Timepix basado en GaAs:Cr con partículas alfa confirma que este dispositivo es capaz de registrar partículas en el rango energético de 3410 a 7687 keV. Se utilizó la simulación matemática para calcular la energía transmitida, haciendo posible la calibración experimental con el uso de Mylar como absorbente. Utilizando la calibración del detector hecha con los rayos X característicos de algunos materiales blanco y empleando un procedimiento de ajuste en dos pasos fue determinada la relación entre la energía de los fotones y los conteos TOT registrados por el detector. Se realizó la calibración energética con partículas alfa de acuerdo con una función lineal y se verificó con la medición de la línea del 218Po del radón en aire.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Cuba]]></kwd>
<kwd lng="en"><![CDATA[mathematical models]]></kwd>
<kwd lng="en"><![CDATA[JINR]]></kwd>
<kwd lng="en"><![CDATA[international cooperation]]></kwd>
<kwd lng="en"><![CDATA[experimental data]]></kwd>
<kwd lng="en"><![CDATA[calibration]]></kwd>
<kwd lng="es"><![CDATA[Cuba]]></kwd>
<kwd lng="es"><![CDATA[modelos matemáticos]]></kwd>
<kwd lng="es"><![CDATA[JINR]]></kwd>
<kwd lng="es"><![CDATA[cooperación internacional]]></kwd>
<kwd lng="es"><![CDATA[datos experimentales]]></kwd>
<kwd lng="es"><![CDATA[calibración]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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