<?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>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2018000500472</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Investigation of the electron paramagnetic resonance signal response in gamma-irradiated poly(lactic acid) for high-dose dosimetry]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ureña-Nuñez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galindo]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Nucleares  ]]></institution>
<addr-line><![CDATA[Ocoyoacac Estado de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2018</year>
</pub-date>
<volume>64</volume>
<numero>5</numero>
<fpage>472</fpage>
<lpage>477</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2018000500472&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2018000500472&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2018000500472&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper is concerned with the investigation of the Electron Paramagnetic Resonance (EPR) signal response to Co60 gamma-ray radiation on poly(L-lactic acid) (PLA). The aim of this study is to assess the usefulness of PLA as a high-dose dosimeter. The EPR-signal response of PLA has been investigated to determine some of its dosimetric characteristics such as: signal intensity versus gamma dose received, zero-dose response, signal fading, signal repeatability, batch homogeneity, detection threshold, and stability under simulated sunlight exposure. It is concluded that PLA might be used as a high-dose dosimeter (10-500 kGy), with a very good reproducibility although its signal fading is about 9% in the first 5 hrs.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este trabajo se ocupa de la investigación de la respuesta de la señal de Resonancia Paramagnética Electrónica (EPR) a la radiación de rayos gamma Co60 sobre ácido poliláctico L (PLA). El objetivo de este estudio es evaluar la utilidad del PLA como un dosímetro para dosis altas. La respuesta de señal EPR del PLA ha sido investigada para determinar algunas de sus características dosimétricas tales como: intensidad de señal versus dosis gamma recibida, respuesta a dosis cero, desvanecimiento de señal, repetibilidad de señal, homogeneidad del lote, umbral de detección y estabilidad bajo exposición solar simulada. Se concluye que el PLA se puede usar como un dosímetro para altas dosis (10-500 kGy), con una muy buena reproducibilidad, aunque su pérdida de señal es alrededor del 9% en las primeras 5 hrs.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Poly(lactic-acid)]]></kwd>
<kwd lng="en"><![CDATA[gamma-irradiation]]></kwd>
<kwd lng="en"><![CDATA[high-dose dosimeter]]></kwd>
<kwd lng="en"><![CDATA[EPR ESR dosimetry]]></kwd>
<kwd lng="es"><![CDATA[Ácido poliláctico]]></kwd>
<kwd lng="es"><![CDATA[irradiación gama]]></kwd>
<kwd lng="es"><![CDATA[dosímetro de altas dosis]]></kwd>
<kwd lng="es"><![CDATA[dosimetría EPR ESR]]></kwd>
<kwd lng="en"><![CDATA[76.30.Rn]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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