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Syllabus:

Radiation Dosimetry, 15 Credits

The course is discontinued from 2023-03-29

Swedish name: Strålningsdosimetri

This syllabus is valid: 2016-08-22 valid to 2021-08-22 (newer version of the syllabus exists)

Course code: 5RA008

Credit points: 15

Education level: Second cycle

Main Field of Study and progress level: Physics: Second cycle, in-depth level of the course cannot be classified

Grading scale: TH teknisk betygsskala

Responsible department: Department of Physics

Revised by: Faculty Board of Science and Technology, 2017-06-30

Contents

The course starts with a detailed description of the fundamental microscopic interaction processes that lead to the important macroscopic quantities, such as kerma, collision kerma, exposure and absorbed dose. Further, the different cavity theories by Bragg-Gray, Spencer-Attix, Burlin and for the large cavity are explained. The concepts of radiation and charged particle equilibria are presented as well as their importance for the different cavity theories. The course also includes important aspects on the average energy required to form and ion pair in a gas, the so called W-value. Fano’s theorem and its importance for the cavity theories is discussed. The course also gives an introduction to micro- and internal dosimetry. In the course is also included lectures on absolute and relative measuring detectors, their advantages and disadvantages. The course also includes an introduction to precision measurement of absorbed dose.
The laboratory part in this course is mandatory.

The course includes three parts:
1. Theoretical part, 5 ECTS
2. Calculation part, 5 ECTS
3. Laboration, 5 ECTS

Expected learning outcomes

Knowledge and understanding

  • Explain for the different dosimetry quantities fluence, energy fluence, radiant energy, energy imparted, energy transfer, net energy transfer, kerma, collision kerma, exposure, absorbed dose and their relation with each other and requirements for these.
  • Explain the concepts of radiation equilibrium and charged particle equilibrium and explain their role in the selection cavity theory.
  • Explain the theory for large cavity, Bragg-Gray theory, Spencer-Attix theory, Burlin theory, their advantages and disadvantages at different radiation qualities and explain when respective theory can be applied.
  • Explain in general terms cavity theories other than those above.
  • Explain the advantages and disadvantages of different detectors used for experimental determination of relevant dosimetry quantities.
  • Explain in general terms the different terms in Boltzmann’s transport equation for ionizing particles.
  • Explain in general terms microdosimetry.
  • Explain for the methods used in internal dosimetry.

Skills and abilities

  • Be able to calculate the important dosimetry quantities in simple cases (e.g. for primary particles) and be able to set up the relevant equations in more complex situations.
  • Be able to experimentally determine the absorbed dose at different photon and charged particle energies.
  • Be able to calculate fluence and energy fluence from different source geometries.
  • From the Boltzmann’s transport equation, be able in general terms determine primary and secondary particles contribution to kerma, exposure and absorbed dose.
  • Be able to calculate the dose using internal dosimetry methods.
  • Be able to calculate the dose of radiation from extended radiation sources.

Judgement and approach

  • Show an ability to communicate and cooperate with other participants at laboratory work and other group moments.
  • Show an ability to analyze and validate results with respect to plausibility  .

Required Knowledge

University: At least 90 ECTS credits including the course Radiation Interaction 7.5 ECTS, or corresponding. Proficiency in English equivalent to Swedish upper secondary course English A/5. Where the language of instruction is Swedish, applicants must prove proficiency in Swedish to the level required for basic eligibility for higher studies.

Examination modes

Part 1: Theoretical part 5 credits
The part is examined with written exam. The grade is  assessed with Fail (U), Pass (3), Pass with Credit (4) or Pass with Distinction (5).

Part 2: Calculation part 5 credits.
The part is examined with written exam. The grade is assessed with Fail (U), Pass (3), Pass with Credit (4) or Pass with Distinction (5).

Part 3: Laboration 5 credits.
The part is examined with written laboratory report. The grade is assessed with Fail (U) or Pass (G).

On the whole course the grades Fail (U), Pass (3), Pass with Credit (4) or Pass with Distinction (5) are set. To pass the course it requires that all examinations and obligatory tasks are approved. The grade is a summary assessment of the results of the examinations of the different parts, and is set after all mandatory elements are approved.

Students who received a passing grade on an examination may not retake the examination.

Students who do not pass the regular examination renewed examination in accordance with the Umeå University Regulations for tests and examinations at the undergraduate and graduate level (FS 1.1.2-553-14) could be arranged. The first re-test is offered not later than two months after the first examination. When the ordinary examination takes place in May or June, d a first retesting opportunity is given within three months after the first examination. In addition, at least another re-test within one year of regular examination is offered.

In cases where the exam can not be repeated under the current rules for retesting the exam should instead be replaced with another task. The scope and content of such task should not be disproportionate to the missed exam.

A student who has taken two examinations in a course or part of a course without passing, has the right to have another examiner appointed, unless there are specific reasons against it (6 ch. 22, § HF). Requests for new examiners should be addressed to the head of the Department of Radiation Sciences.

Other regulations

In the event that the course expires or major changes are introduced, the students are assured at least three occasions of examination (including regular examination) as prescribed in the syllabus to the course that the student originally registered in over a period of a maximum of two years from the previous syllabus expired.

Literature

The literature list is not available through the web. Please contact the faculty.