Doctorate in Applied and Engineering Physics  

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Thesis Proposal for the

Doctorate Program in Applied and Engineering Physics (DAEPHYS)

Starting in the Academic Year 2016/2017


Proposal 006


Title:Diagnostic plasmas using X-ray spectra
 
Objectives (recommended length: 2000-3000 char):
High precision spectroscopy (HPS) has been used as a metrology technique in several environments, from nuclear fusion to industrial plasma film deposition processes. This technique allows us to obtain quantities that enable the plasma characterization. HPS may be used in in high accuracy conditions where the X-ray emission spectra, allow for the identification not only the elements present in the plasma and respective charge states, but also its density and temperature.

Metrology and plasma diagnostics are very important subjects, namely in nuclear inertial confinement fusion and in magnetic confinement fusion. During this preparatory phase of the next generation of nuclear fusion devices, a special attention is given to the question of tungsten impurities in the plasma that can lead to power losses and to the deterioratin of the conditions for a sustainable fusion. According to the decisions taken in ITER, this element will be one of the constituents of the walls, vertical targets, dome and the "diverter". Another example where the metrology and plasma diagnostics has acquired special importance are the ECRIS (Electron Cyclotron Resonance Ion Source) ion sources which are characterized by producing large populations of highly charged ions and electrons in high temperature. The aim of this work is the optimization of the metrology technique and plasma diagnostics.

With that purpose will be developed a methodology that allows the modeling of X-ray high resolution spectra. This will require not only the creation and implementation of appropriate algorithms, for each particular kind of plasma, but also the calculation of atomic parameters necessary for the model. In the end, they should allow us to obtain in real time some properties of the plasma that are difficult to measure directly, for example the plasma temperature and density.

This project will be developed in collaboration with international research teams that will obtains experimental plasma spectra to analyze, namely the Laboratoire Kastler Brossel (LKB), École Normale Supérieure, Université Pierre et Marie Curie e CNRS, Paris, France.
 
Framework (recommended length: 500-2000 char):
The required equipment already exists in the Departments of Physics of the Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa and of the Faculdade de Ciências da Universidade de Lisboa.

The proponents have a large experience in the atomic structure calculations needed to perform this work.
 
Tasks (recommended length: 1000-3000 char):
1. Bibliographic study;
2. Development of a Model for the analysis of the proposed problem;
3. Development and implementation the necessary algorithms;
4. Calculation of the atomic parameters necessary to the Model;
5. Comparison of the results and conclusions
6. Modeling of the X-ray spectrum;
7. Comparison of the results and conclusions
8. Dissertation writing
 
Research centre/lab or R&D unit hosting the thesis project:
Department of Physics, UNL and Department of Phyisics, UA
 
University to which the thesis project will be presented:
UNL - Universidade Nova de Lisboa
 
DAEPHYS Scientific Domain in which the project fits:
Metrology
 
Relation of the project to the Scientific Domains of DAEPHYS:
 
Candidate profile:
MSc. in Physics Eng., Applied Physics, Physics or Biomedical Eng., programming skills, team work, proficiency in English.
 
Does this proposal involve more than one University?:
yes
 
Synergies between the two Universities participating in the proposal:
DAEPHYS strongly encourages the presentation of thesis projects in co-supervision by researchers from two of the universities participating in the Program. In this field, explain the benefits resulting from the proposed co-supervision and the involvement of elements from the two universities, e.g. building critical mass teams, profiting from existing infrastructures or advanced equipments, profiting from expert technical know-how, etc. If the proposal involves only one University, write n/a.
(recommended length: 500-1000 char)
: Both teams have a long experience in the proposed field and have maintained an active collaboration in the past 20 years leading to many joint publications.

This project will contribute to strengthen the collaboration between both teams, by sharing both expertise and equipment, which is essential to the success of the proposal.
 
Does this proposal involve a company?:
no
 
Proposals involving a company:
DAEPHYS strongly encourages the presentation of thesis projects involving a company, preferably a high-tech company. These proposals have to: 1) be centered on a technological problem in which the partner company has been (or plan / would like to be) involved; 2) have a co-supervisor on the enterprise; 3) include part of the project to be carried out in the company.
(recommended length: 500-1000 char)
:

 

Supervisor

Name:José Paulo Santos
Institution:UNL
email:jps@fct.unl.pt
 
link to CV or indication of ORCID ID:
http://orcid.org/0000-0002-5890-0971

 

Co-Supervisor

Name:José Pires Marques
Institution:UL
email:jmmarques@fc.ul.pt
 
link to CV or indication of ORCID ID:
http://orcid.org/0000-0002-3797-3880

 

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