<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822020000100036</article-id>
<article-id pub-id-type="doi">10.18845/tm.v33i1.5019</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Dosimetría absoluta mediante película radiocrómica en un sistema de irradiación gamma, utilizando un espectrofotómetro UV-VIS]]></article-title>
<article-title xml:lang="en"><![CDATA[Absolute dosimetry through radiochromic film in gamma irradiation system using a spectrophotometer UV-VIS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Segura]]></surname>
<given-names><![CDATA[Walter]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Física Servicio de Radioterapia. Hospital México]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<volume>33</volume>
<numero>1</numero>
<fpage>36</fpage>
<lpage>43</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822020000100036&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822020000100036&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822020000100036&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El propósito de este trabajo fue la calibración de las películas Gafchromic HD-V2 mediante la adaptación de los procedimientos de calibración de películas utilizados en dosis bajas. Las películas se irradiaron en 11 valores de dosis en el rango de 0 a 106,28 Gy en un sistema de irradiación gamma y utilizando un espectrofotómetro UV-VIS para medir la densidad óptica. Se obtuvieron los espectros de absorbancia para varias dosis y el pico de máxima absorbancia se ubicó en la longitud de onda de 677 nm. Esta longitud de onda se utilizó para realizar las medidas de la densidad óptica (OD), y estos resultados se utilizaron para realizar el gráfico de dosis en función a la densidad óptica neta (ODn). Se obtuvieron la curva de calibración de las películas y la incertidumbre en la dosis, con valores inferiores al 4% en dosis entre 10 a 20 Gy, e incertidumbres inferiores al 3% para dosis superiores a 20 Gy hasta completar el rango de la curva. La calibración del sistema película radiocrómica-espectrofotómetro se obtuvo para el rango de dosis y el sistema de irradiación gamma empleado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The propose of this work was the Gafchromic HD-V2 film calibration, though adapting film calibration procedures applied in low dose. The films were irradiated in 11 dose values within of the range from 0 to 106,28 Gy in a gamma irradiation system, and using a spectrophotometer for the optical density measure. The absorbance spectrum were obtained for several dose, and the maximum absorbance peak was located in the wavelength of 677 nm. This wavelength was used for make the measurements of the optical density (OD), and these results were used for make the dose versus net optical density (ODn) graph. The calibration curve of the films and uncertainty in the dose were obtained, with values under 4% in dose between 10 to 20 Gy, and uncertainties under 3% for dose up from 20 Gy until complete the range of the curve. The calibration of the radiochromic film-spectrophotometer system was obtained for dose range and gamma irradiation system employed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Gafchromic HD-V2]]></kwd>
<kwd lng="es"><![CDATA[calibración películas radiocrómicas]]></kwd>
<kwd lng="es"><![CDATA[espectro absorbancia]]></kwd>
<kwd lng="es"><![CDATA[irradiador gamma]]></kwd>
<kwd lng="es"><![CDATA[densidad óptica]]></kwd>
<kwd lng="en"><![CDATA[Gafchromic HD-V2]]></kwd>
<kwd lng="en"><![CDATA[radiochromic film calibration]]></kwd>
<kwd lng="en"><![CDATA[absorbance spectrum]]></kwd>
<kwd lng="en"><![CDATA[gamma irradiator]]></kwd>
<kwd lng="en"><![CDATA[optical density]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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