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Master's Dissertation
DOI
10.11606/D.85.2019.tde-30112018-085024
Document
Author
Full name
Rodrigo Bohac Ferreira da Rosa
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2018
Supervisor
Committee
Conti, Thadeu das Neves (President)
Mourão, Rogério Pimenta
Trigo, Flavio Celso
Title in Portuguese
Sistema de captura de aerossóis gerados em ablação com laser para amostragem de superfícies contaminadas
Keywords in Portuguese
ablação por laser
contaminação radioativa
inventário radioisotópico
Abstract in Portuguese
A Gerência de Rejeitos Radioativos do IPEN já se utiliza da técnica de ablação por laser para descontaminação de peças superficialmente contaminadas por material radioativo. Esta tecnologia, porém, demonstrou grande potencial para caracterização destes rejeitos com o objetivo de levantar o Inventário Radioisotópico de peças. As técnicas atuais para levantar este inventário (esfregaço e modelagem físico-matemática) sofrem de grandes limitações de implementação e de precisão. O objetivo deste trabalho é desenvolver o projeto de uma sonda de ablação por laser acoplada a um módulo de sucção e captura por filtro do particulado ejetado na ablação, permitindo envio do filtro para análise de emissões radioativas para classificação de radioisótopos.
Title in English
Capture system of aerosols generated by laser ablation for radioactively contaminated surfaces sampling
Keywords in English
laser ablation
radioactive contamination
radioisotopic inventory
Abstract in English
The department Gerência de Rejeitos Radioativos (Radioactive Waste Management) from IPEN has already used the laser ablation technique for superficial decontamination of parts. This technique has also shown great potential for characterization of this waste with the purpose of rising data for the Radioisotopic Inventory of parts. The current techniques for this purpose (wipe sampling and physical modeling) lack the accuracy and practicality. The objective of this study is to develop the project of an instrument of laser ablation engaged with a module for sucking and capturing (by filter) the particulate ejected from the ablation, allowing the filter to be analyzed in laboratory for radioisotopic classification through radioactive emission.
 
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2018RosaSistema.pdf (4.37 Mbytes)
Publishing Date
2019-01-18
 
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