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 004


Title:Development of a wavelength dispersive X-ray system with double monochromatic crystals
 
Objectives (recommended length: 2000-3000 char):
The objective of this work is the development of a wavelength dispersive X-ray system with double
monochromatic crystals.
The basis for this instrumental advance is the use of two doubly curved crystals (DCC), one for
monochromatic excitation and another for monochromatic detection. Taking advantage of the
bremsstrahlung radiation of high power X-ray tubes it is possible to select the energy for the incident
beam. The second DCC selects the energy of the emitted beam. For detector we intend to use a gas
detector, specially developed by the instrumentation group, for this purpose.
This system is mainly devoted to study fundamental parameters, like intensity lines, satellite lines,
line widths and the effect of chemical compounds in energy levels shift. We can easily select the
element to study and choose the energy for the best excitation conditions. Due to the high resolution
of the emission system we can assemble the high efficiency of the gas detectors on the detection
system. At present, these studies are only possible by synchrotron radiation, and implementing its
effectiveness in laboratory is noteworthy.
This work will be made in collaboration with the Atomic Institute of Technical University of Vienna and
the Department of Chemistry, Atmospheric Science, University of Gothenburg in Sweden.
 
Framework (recommended length: 500-2000 char):
The main part of the necessary equipment already exists in the Physics Department of the
Universidade Nova de Lisboa (UNL). This work is partially supported by FCT through the
project PUID/FIS/04559/2013 (LIBPhys).
 
Tasks (recommended length: 1000-3000 char):
1. Bibliographic study of the available WDXRF systems
2. Study of the most adequate doubly curved crystals
3. Project of the WDXRF system
4. Assembling of the system
5. Assessment of the system using standard samples
6. Measurement of the energy and intensity of several lines of atomic systems
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:
Instrumentation
 
Relation of the project to the Scientific Domains of DAEPHYS:
The project fits into the theme of instrumentation since it aims the development of an X-ray
spectrometer.
 
Candidate profile:
Physics, Physics Engineering and Biomedical Engineering
 
Does this proposal involve more than one University?:
no
 
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)
:
 
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:Maria Luisa Carvalho
Institution:UNL
email:luisa.carvalho@fct.unl.pt
 
link to CV or indication of ORCID ID:
http://orcid.org/0000-0002-9004-1134

 

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