Electron emission from bromouracil and uracil induced by protons and radiosensitization
- Autores
- Roy Chowdhury, Madhusree; Monti, Juan Manuel; Misra, Deepankar; Weck, Philippe F.; Rivarola, Roberto Daniel; Tribedi, Lokesh C.
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Absolute double differential cross sections (DDCS) of electrons emitted from uracil and 5-bromouracil (BrU) in collisions with protons of energy 200 keV have been measured for various forward and backward emission angles over wide range of electron energies. The measured DDCS are compared with the continuum distorted wave-eikonal initial state (CDW-EIS) calculations. The optimized structure of the BrU was estimated along with the population analysis of all the occupied orbitals using a self-consistent field density. A comparison between the measured DDCS data for the two molecules show that the cross section of low energy electrons emitted from BrU is substantially larger than that for uracil. The BrU-to-uracil DDCS ratios obtained from the present measurements indicate an enhancement of the electron emission by a factor which is as large as 2.0 to 2.5. These electrons being the major agent for damaging the DNA/RNA of the malignant tissues, the present results are expected to provide an important input for the radiosensitization effect in hadron therapy. It is noteworthy to mention that the CDW-EIS calculations for Coulomb ionization cannot predict such enhancement. A large angular asymmetry is observed for uracil with a broad structure, which is absent in case of BrU.
Fil: Roy Chowdhury, Madhusree. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; España
Fil: Monti, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Misra, Deepankar. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; España
Fil: Weck, Philippe F.. No especifíca;
Fil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Tribedi, Lokesh C.. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; España - Materia
-
CDW-EIS
DOUBLE DIFFERENTIAL CROSS SECTION
ELECTRON SPECTROSCOPY
FORWARD-BACKWARD ANGULAR ASYMMETRY
HALOURACILS
RADIOSENSITIZATION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/219148
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/219148 |
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CONICET Digital (CONICET) |
spelling |
Electron emission from bromouracil and uracil induced by protons and radiosensitizationRoy Chowdhury, MadhusreeMonti, Juan ManuelMisra, DeepankarWeck, Philippe F.Rivarola, Roberto DanielTribedi, Lokesh C.CDW-EISDOUBLE DIFFERENTIAL CROSS SECTIONELECTRON SPECTROSCOPYFORWARD-BACKWARD ANGULAR ASYMMETRYHALOURACILSRADIOSENSITIZATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Absolute double differential cross sections (DDCS) of electrons emitted from uracil and 5-bromouracil (BrU) in collisions with protons of energy 200 keV have been measured for various forward and backward emission angles over wide range of electron energies. The measured DDCS are compared with the continuum distorted wave-eikonal initial state (CDW-EIS) calculations. The optimized structure of the BrU was estimated along with the population analysis of all the occupied orbitals using a self-consistent field density. A comparison between the measured DDCS data for the two molecules show that the cross section of low energy electrons emitted from BrU is substantially larger than that for uracil. The BrU-to-uracil DDCS ratios obtained from the present measurements indicate an enhancement of the electron emission by a factor which is as large as 2.0 to 2.5. These electrons being the major agent for damaging the DNA/RNA of the malignant tissues, the present results are expected to provide an important input for the radiosensitization effect in hadron therapy. It is noteworthy to mention that the CDW-EIS calculations for Coulomb ionization cannot predict such enhancement. A large angular asymmetry is observed for uracil with a broad structure, which is absent in case of BrU.Fil: Roy Chowdhury, Madhusree. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; EspañaFil: Monti, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Misra, Deepankar. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; EspañaFil: Weck, Philippe F.. No especifíca;Fil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Tribedi, Lokesh C.. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; EspañaIOP Publishing2022-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/219148Roy Chowdhury, Madhusree; Monti, Juan Manuel; Misra, Deepankar; Weck, Philippe F.; Rivarola, Roberto Daniel; et al.; Electron emission from bromouracil and uracil induced by protons and radiosensitization; IOP Publishing; New Journal of Physics; 24; 7; 7-2022; 1-111367-2630CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/ac7e65info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:27Zoai:ri.conicet.gov.ar:11336/219148instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:20:27.652CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
title |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
spellingShingle |
Electron emission from bromouracil and uracil induced by protons and radiosensitization Roy Chowdhury, Madhusree CDW-EIS DOUBLE DIFFERENTIAL CROSS SECTION ELECTRON SPECTROSCOPY FORWARD-BACKWARD ANGULAR ASYMMETRY HALOURACILS RADIOSENSITIZATION |
title_short |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
title_full |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
title_fullStr |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
title_full_unstemmed |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
title_sort |
Electron emission from bromouracil and uracil induced by protons and radiosensitization |
dc.creator.none.fl_str_mv |
Roy Chowdhury, Madhusree Monti, Juan Manuel Misra, Deepankar Weck, Philippe F. Rivarola, Roberto Daniel Tribedi, Lokesh C. |
author |
Roy Chowdhury, Madhusree |
author_facet |
Roy Chowdhury, Madhusree Monti, Juan Manuel Misra, Deepankar Weck, Philippe F. Rivarola, Roberto Daniel Tribedi, Lokesh C. |
author_role |
author |
author2 |
Monti, Juan Manuel Misra, Deepankar Weck, Philippe F. Rivarola, Roberto Daniel Tribedi, Lokesh C. |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
CDW-EIS DOUBLE DIFFERENTIAL CROSS SECTION ELECTRON SPECTROSCOPY FORWARD-BACKWARD ANGULAR ASYMMETRY HALOURACILS RADIOSENSITIZATION |
topic |
CDW-EIS DOUBLE DIFFERENTIAL CROSS SECTION ELECTRON SPECTROSCOPY FORWARD-BACKWARD ANGULAR ASYMMETRY HALOURACILS RADIOSENSITIZATION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Absolute double differential cross sections (DDCS) of electrons emitted from uracil and 5-bromouracil (BrU) in collisions with protons of energy 200 keV have been measured for various forward and backward emission angles over wide range of electron energies. The measured DDCS are compared with the continuum distorted wave-eikonal initial state (CDW-EIS) calculations. The optimized structure of the BrU was estimated along with the population analysis of all the occupied orbitals using a self-consistent field density. A comparison between the measured DDCS data for the two molecules show that the cross section of low energy electrons emitted from BrU is substantially larger than that for uracil. The BrU-to-uracil DDCS ratios obtained from the present measurements indicate an enhancement of the electron emission by a factor which is as large as 2.0 to 2.5. These electrons being the major agent for damaging the DNA/RNA of the malignant tissues, the present results are expected to provide an important input for the radiosensitization effect in hadron therapy. It is noteworthy to mention that the CDW-EIS calculations for Coulomb ionization cannot predict such enhancement. A large angular asymmetry is observed for uracil with a broad structure, which is absent in case of BrU. Fil: Roy Chowdhury, Madhusree. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; España Fil: Monti, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Misra, Deepankar. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; España Fil: Weck, Philippe F.. No especifíca; Fil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Tribedi, Lokesh C.. International Centre Of Theoretical Science. Tata Institute Of Fundamental Research; España |
description |
Absolute double differential cross sections (DDCS) of electrons emitted from uracil and 5-bromouracil (BrU) in collisions with protons of energy 200 keV have been measured for various forward and backward emission angles over wide range of electron energies. The measured DDCS are compared with the continuum distorted wave-eikonal initial state (CDW-EIS) calculations. The optimized structure of the BrU was estimated along with the population analysis of all the occupied orbitals using a self-consistent field density. A comparison between the measured DDCS data for the two molecules show that the cross section of low energy electrons emitted from BrU is substantially larger than that for uracil. The BrU-to-uracil DDCS ratios obtained from the present measurements indicate an enhancement of the electron emission by a factor which is as large as 2.0 to 2.5. These electrons being the major agent for damaging the DNA/RNA of the malignant tissues, the present results are expected to provide an important input for the radiosensitization effect in hadron therapy. It is noteworthy to mention that the CDW-EIS calculations for Coulomb ionization cannot predict such enhancement. A large angular asymmetry is observed for uracil with a broad structure, which is absent in case of BrU. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/219148 Roy Chowdhury, Madhusree; Monti, Juan Manuel; Misra, Deepankar; Weck, Philippe F.; Rivarola, Roberto Daniel; et al.; Electron emission from bromouracil and uracil induced by protons and radiosensitization; IOP Publishing; New Journal of Physics; 24; 7; 7-2022; 1-11 1367-2630 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/219148 |
identifier_str_mv |
Roy Chowdhury, Madhusree; Monti, Juan Manuel; Misra, Deepankar; Weck, Philippe F.; Rivarola, Roberto Daniel; et al.; Electron emission from bromouracil and uracil induced by protons and radiosensitization; IOP Publishing; New Journal of Physics; 24; 7; 7-2022; 1-11 1367-2630 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/ac7e65 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614185367896064 |
score |
13.070432 |