ESTIMATION OF THE ANISOTROPY EMISSION OF LPN/CIEMAT NEUTRON SOURCES: EFFECT OF HEAVY CAPSULE HOLDERS-Reference-Cited by-同舟云学术

ESTIMATION OF THE ANISOTROPY EMISSION OF LPN/CIEMAT NEUTRON SOURCES: EFFECT OF HEAVY CAPSULE HOLDERS

Published:2019-04-23 Issue:4 Volume:186 Page:452-461
ISSN:0144-8420
Container-title:Radiation Protection Dosimetry
language:en
Short-container-title:

Author:

Villafañe Roberto Mendez¹,de Sousa Lacerda Marco Aurélio²^ORCID,Blanco Xandra Campo¹^ORCID,Sánchez Francisco González¹,Vega-Carrillo Héctor René³

Affiliation:

1. Laboratorio de Patrones Neutrónicos, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Av. Complutense 40, 28040 Madrid, Spain

2. Laboratório de Calibração de Dosímetros, Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Av. Presidente Antônio Carlos, 6627, 31270-901, Belo Horizonte, Brazil

3. Unidad Académica de Estudios Nucleares, Universidad Autónoma de Zacatecas, C. Ciprés 10, Fracc. La Peñuela, 98068 Zacatecas, Zac, Mexico

Abstract

Abstract In order to estimate the anisotropy emission of 241Am-Be and 252Cf neutron sources from the Spanish Neutron Standards Laboratory (LPN/CIEMAT) detailed models of sources capsules and capsule holders were designed with the MCNPX code. Simulations of the sources inside the capsules without the capsule holders were done to validate the MC model by comparison with experimental results provided by other authors. After that, the capsule holders were incorporated to the simulation. In general, a good agreement has been found between measurements and our calculations. Results show the additional encapsulations have significant influence on anisotropy factors, energy spectra and dose rates.

Funder

Brazilian National Council for Scientific and Technological Development

Research Support Foundation of Minas Gerais State

Publisher

Oxford University Press (OUP)

Subject

Public Health, Environmental and Occupational Health,Radiology Nuclear Medicine and imaging,General Medicine,Radiation,Radiological and Ultrasound Technology

Link

http://academic.oup.com/rpd/article-pdf/186/4/452/32994142/ncz050.pdf

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