Sökning: "alpha strålning"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden alpha strålning.

  1. 1. Calculating Minimum Detectable Activity for a moving scintillator detector using real-time speed measurement : Implementing a monitoring system to improve accuracy of surface contamination measurement systems

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Artur Amcoff; Oscar Persson; [2021]
    Nyckelord :Minimum Detectable Activity MDA ; Surface contamination; ISO 11929; Alpha α radiation; Beta β radiation; Detection limit; Counting efficiency; Minsta detekterbara aktivitet; Ytkontaminering; ISO 11929; Alfa α strålning; Beta β strålning; Detektionsgräns; Radioaktiv mäteffektivitet;

    Sammanfattning : Surface contamination occurs in nuclear facilities, something that is important to detect easily and efficiently. Using today’s methods to detect nuclear surface contamination may cause certain inconsistencies as the human operator is solely trusted to keep the detector at the correct distance and move it at the correct speed. LÄS MER

  3. 2. Ly-α Dayglow on Uranus : Radiative Transfer Modelling

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Jahangir Jazayeri; [2021]
    Nyckelord :Uranus; Lyman-alpha; Ly-α; resonant scattering; Rayleigh scattering; interplanetary medium; ultraviolet; hydrogen; methane; parameter study; limb brightening; Voyager 2; Ultraviolet Spectrometer;

    Sammanfattning : Uranus is one of the least explored planets in our solar system. Event though the Uranian Ly-α emission has been a subject of study for decades, there is not a consensus on the sources contribution to the total signal. LÄS MER

  4. 3. Evaluation of internal dosimetry for 225- Ac using one single measurement based on 111-In imaging

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Selma Curkic; [2021]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background and aim: There is a high interest in determining the absorbed dose in tumors and organs for various radiotherapy cancer treatments. Due to limitations in today's methods of determining the patient specific absorbed dose it is usually not proceeded clinically. LÄS MER

  5. 4. Potassium in the Galactic thin and thick discs

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Carina Norregaard; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : To understand the evolution of our galaxy, the chemical abundance patterns and trends within the stars of the different regions are explored. The process of synthesizing these elements reveals key details about the way the stars and, therefore, the galaxy formed. LÄS MER

  7. 5. A small-scale dosimetry model of the liver tissue

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Anna Stenvall; [2012]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Att behandla tumörsjukdomar genom injektion av radioaktiva läkemedel är en behandlingsteknik kallad radionuklidterapi. Det radioaktiva läkemedlet består av en radioaktiv isotop, fäst på en målsökande bärarmolekyl, specifik för den vävnad vari man önskar att läkemedlet skall ansamlas. LÄS MER