dor_id: 41774

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650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

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856.4.0.u: http://revistas.unam.mx/index.php/rmf/article/view/31847/29414

100.1.#.a: Guzmán García, K.; Bañuelos Frías, A.; Vega Carrillo, H. R.; Valero Luna, C.; Borja-hernández, C. G.; Hernández Dávila, V. M.

524.#.#.a: Guzmán García, K., et al. (2012). Neutron spectra and H*(10) of photoneutrons inside the vault room of an 18 MV LINAC. Revista Mexicana de Física; Vol 58, No 003. Recuperado de https://repositorio.unam.mx/contenidos/41774

245.1.0.a: Neutron spectra and H*(10) of photoneutrons inside the vault room of an 18 MV LINAC

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Facultad de Ciencias, UNAM

264.#.0.c: 2012

264.#.1.c: 2012-06-01

653.#.#.a: Monte Carlo simulations; Linac; Radiotherapy; Spectrometry

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884.#.#.k: http://revistas.unam.mx/index.php/rmf/article/view/31847

041.#.7.h: eng

520.3.#.a: Neutron spectra and the ambient dose equivalent were estimated inside the radiotherapy hall with an 18 MV linac. Estimations were carried out using Monte Carlo methods where a realist hall was modeled including a phantom made of equivalent tissue. The source term for photoneutrons was calculated using the Tosi et al. function that account for evaporation and knock-on neutrons. The spectra were estimated using two different energy distributions. Detectors were located in several sites inside the hall including the maze and outside the hall door, all detectors were located at the plane were the isocenter is located. In the treatment hall, as the distance respect to the isocenter is increased, the amount of neutrons and the H*(10) are reduced, neutrons in the high-energy region are shifted to lower region peaking around 0.1 MeV, however the epithermal and thermal neutrons remain constant due to the room-return effect. In the maze the spectra are dominated by epithermal and thermal neutrons that contributes to produce activation and the production of prompt gamma-rays.

773.1.#.t: Revista Mexicana de Física; Vol 58, No 003 (2012)

773.1.#.o: http://revistas.unam.mx/index.php/rmf

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handle: 351c9e4e2c69c1e0

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last_modified: 2020-11-27 00:00:00

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Artículo

Neutron spectra and H*(10) of photoneutrons inside the vault room of an 18 MV LINAC

Guzmán García, K.; Bañuelos Frías, A.; Vega Carrillo, H. R.; Valero Luna, C.; Borja-hernández, C. G.; Hernández Dávila, V. M.

Facultad de Ciencias, UNAM, publicado en Revista Mexicana de Física, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Facultad de Ciencias, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Guzmán García, K., et al. (2012). Neutron spectra and H*(10) of photoneutrons inside the vault room of an 18 MV LINAC. Revista Mexicana de Física; Vol 58, No 003. Recuperado de https://repositorio.unam.mx/contenidos/41774

Descripción del recurso

Autor(es)
Guzmán García, K.; Bañuelos Frías, A.; Vega Carrillo, H. R.; Valero Luna, C.; Borja-hernández, C. G.; Hernández Dávila, V. M.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Neutron spectra and H*(10) of photoneutrons inside the vault room of an 18 MV LINAC
Fecha
2012-06-01
Resumen
Neutron spectra and the ambient dose equivalent were estimated inside the radiotherapy hall with an 18 MV linac. Estimations were carried out using Monte Carlo methods where a realist hall was modeled including a phantom made of equivalent tissue. The source term for photoneutrons was calculated using the Tosi et al. function that account for evaporation and knock-on neutrons. The spectra were estimated using two different energy distributions. Detectors were located in several sites inside the hall including the maze and outside the hall door, all detectors were located at the plane were the isocenter is located. In the treatment hall, as the distance respect to the isocenter is increased, the amount of neutrons and the H*(10) are reduced, neutrons in the high-energy region are shifted to lower region peaking around 0.1 MeV, however the epithermal and thermal neutrons remain constant due to the room-return effect. In the maze the spectra are dominated by epithermal and thermal neutrons that contributes to produce activation and the production of prompt gamma-rays.
Tema
Monte Carlo simulations; Linac; Radiotherapy; Spectrometry
Idioma
eng
ISSN
2683-2224 (digital); 0035-001X (impresa)

Enlaces