Sökning: "Liquid helium"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden Liquid helium.

  1. 1. Feasibility Study of Resistivity Measurement of Metal Surfaces to Address Potential Dislocations Caused by Surface Conditioning

    Master-uppsats, Uppsala universitet/FREIA

    Författare :Mircea-George Coman; [2022]
    Nyckelord :;

    Sammanfattning : High electrical fields are needed inside the accelerating cavities of particle accelerators in order to accelerate the particles to higher energies in shorter distances. But high electrical fields will lead to electrical breakdowns. LÄS MER

  3. 2. Ethylene to Liquid Hydrocarbons by Heterogeneously Catalyzed Oligomerization on ZSM-5

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fysikalisk kemi

    Författare :Gustav Halldén; [2022]
    Nyckelord :ethylene; ethane; oligomerization; catalyst; heterogeneous catalysis ZSM-5; zeolite;

    Sammanfattning : The aim is to produce aliphatic liquid hydrocarbons using heterogeneous ethylene oligomerization. Thiscould potentially produce renewable synthetic fuels. Heterogeneous catalysis has some advantages overhomogeneous catalysis regarding some sustainability aspects. LÄS MER

  4. 3. Post-Main Sequence Habitability for Outer Solar System Moons

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Viktor Sparrman; [2022]
    Nyckelord :Habitability; Habitable Zone; Greenhouse Effect; Outer moons; Red Giant Branch; Horizontal Branch; Asymptotic Giant Branch; solar evolution;

    Sammanfattning : The search for extra-terrestrial life is guided by the classification of promising candidate worlds. In this classification the habitable zone acts as a measure for the perceived habitability of a circumstellar body. Habitable zone definitions vary between using a conservative and an optimistic limit. LÄS MER

  5. 4. Benchmarking a Cryogenic Code for the FREIA Helium Liquefier

    Kandidat-uppsats, Uppsala universitet/FREIA

    Författare :Elias Waagaard; [2020]
    Nyckelord :Cryogenics; Liquefaction; Helium;

    Sammanfattning : The thermodynamics inside the helium liquefier in the FREIA laboratory still contains many unknowns. The purpose of this project is to develop a theoretical model and implement it in MATLAB, with the help of the CoolProp library. LÄS MER

  7. 5. A Fabry–Pérot Cavity for Rare-Earth-Ion-Doped Nanocrystals

    Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Andre Nüsslein; [2019]
    Nyckelord :Quantum Computer; Rear Earth Ions; Cavity; Laser; Cavity Quantum Electrodynamics; QED; Solidworks; Physics and Astronomy;

    Sammanfattning : This thesis work contributes to the effort of detecting single rare earth ions doped into crystals, an operation crucial for the development of rare earth quantum computer hardware. Doping crystals with rare earth elements, their trivalent ions substitute some of the crystal’s original bonds. LÄS MER