Comparison between the response in air and in water of two ionization chambers exposed to low-energy X-rays
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2022
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| _version_ | 1876435378111512576 |
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| author | A. Moreno Ramírez |
| author_facet | A. Moreno Ramírez |
| contents | Comparison between the response in air and in water of two ionization chambers exposed to low-energy X-rays A. Moreno Ramírez G. Massillon JL Biología Low low rays energy x energy dosimetry This work investigated the effect of two different media in the response of two Farmer-type ionization chambers exposed to low-energy x-rays from 27 kV – 155 kV. The measurements were performed in air and in liquid water. Independent of the ionization chamber, at effective energies below 30 keV (80 kV), the charges collected in both media diverge from a maximum difference of 84% and converge at 30 keV. This can be associated to the rapid attenuation of the low-energy photon fluence by the water depth. At effective energies greater than 30 keV, the response in water becomes larger than that in air, reaching a maximum of 27% and 35% at 65 keV (150 kV) for A19 and A12 chamber, respectively. The difference in response between the two media is consistently greater for ionization chamber A19 at energy above 25 keV. 2022 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280973022 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2A Vol.10 |
| format | Artículo científico |
| id | redalyc_722280973022 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | Comparison between the response in air and in water of two ionization chambers exposed to low-energy X-rays A. Moreno Ramírez Biología Low low rays energy x energy dosimetry Comparison between the response in air and in water of two ionization chambers exposed to low-energy X-rays A. Moreno Ramírez G. Massillon JL Biología Low low rays energy x energy dosimetry This work investigated the effect of two different media in the response of two Farmer-type ionization chambers exposed to low-energy x-rays from 27 kV – 155 kV. The measurements were performed in air and in liquid water. Independent of the ionization chamber, at effective energies below 30 keV (80 kV), the charges collected in both media diverge from a maximum difference of 84% and converge at 30 keV. This can be associated to the rapid attenuation of the low-energy photon fluence by the water depth. At effective energies greater than 30 keV, the response in water becomes larger than that in air, reaching a maximum of 27% and 35% at 65 keV (150 kV) for A19 and A12 chamber, respectively. The difference in response between the two media is consistently greater for ionization chamber A19 at energy above 25 keV. 2022 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280973022 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2A Vol.10 |
| title | Comparison between the response in air and in water of two ionization chambers exposed to low-energy X-rays |
| topic | Biología Low low rays energy x energy dosimetry |
| url | https://www.redalyc.org/articulo.oa?id=722280973022 |