Essays about: "scintillation"

Showing result 1 - 5 of 36 essays containing the word scintillation.

  1. 1. Satellite signal attenuation due to atmospheric influences in northern Sweden

    University essay from Umeå universitet/Institutionen för fysik

    Author : Adrian Stigsson; [2024]
    Keywords : ;

    Abstract : Earth-space traversing electromagnetic waves become attenuated as they propagate through the atmosphere. The sources of attenuation are weather phenomena in the Troposphere, and scintillation and absorption in the Ionosphere. READ MORE

  3. 2. Implementing Total Electron Content in the Grand Unifed Incoherent Scattering Design and Analysis Program for Investigation of Causes to Scintillations

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Samuel Sonesson; [2023]
    Keywords : Total Electron Content; Scintillation; Incoherent Scattering; Ionosphere;

    Abstract : Functionality for calculating and plotting diferent Total Electron Content (TEC) measurements such as Slant Total Electron Content (sTEC), error in sTEC, and VerticalTotal Electron Content (vTEC) was implemented into the data analysis program fromEuropean Incoherent Scattering Scientifc Association (EISCAT), the Grand Unifed Incoherent Scattering Design and Analysis Program (GUISDAP). This utilises a thin-singlelayer model of the ionosphere to convert sTEC into the more analytically useful vTEC. READ MORE

  4. 3. Accumulation of 63Ni, 106Ru and 125Sb in phytoplankton

    University essay from

    Author : Yusuf Ali; [2022-08-22]
    Keywords : Medical physics; Environmental radiology; Nuclear Power Plants; concentration factor CF ; phytoplankton; phaeodactylum tricornutum; radioactive releases; nickel; ruthenium; antimony; gamma spectroscopy; liquid scintillation counting;

    Abstract : Background: Nuclear Power Plants (NPPs) release small amounts of radionuclides which contribute with a low radiation dose to the environment as well as humans and animals. In this context, marine ecosystems are critical, since most NPPs in Sweden are located by the sea. READ MORE

  5. 4. Evaluation of whole-body bone scans performed using a gamma camera with Cadmium Zinc Telluride detector

    University essay from

    Author : Victor Asp; [2022-01-13]
    Keywords : Medical physics; whole-body bone scans; gamma camera; Cadmium Zinc Telluride detector;

    Abstract : The bone scan is a common nuclear medicine imaging procedure that is mainly used for evaluating several oncological patient groups. A radioactive tracer, 99mTc -labelled diphosphonate, is injected intravenously and accumulates in the skeleton. The distribution of the tracer in the body is measured with a gamma camera 3 hours post-injection. READ MORE

  6. 5. PERFORMANCE OF THE PHOTODETECTOR FOR THE ACTIVE SHIELD OF THE COSI SPACE TELESCOPE

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Daniel Álvarez Franco; [2022]
    Keywords : Geant4; scintillation; BGO; CsI; simulation; COSI; telescope; photoelectric effect;

    Abstract : The COmpton Spectrometer and Imager (COSI) is a space telescope that aims to study the soft gamma regime (0.2-5 MeV), capable of performing spectroscopy, imaging and polarimetry of cosmic gamma sources. READ MORE