Search for dissertations about: "lifetime"

Showing result 1 - 5 of 953 swedish dissertations containing the word lifetime.

  2. 1. The short, excited life of tellurium : Lifetime analysis of excited states in the Te midshell region

    Author : Ebba Ahlgren Cederlöf; Ayse Nyberg; Torbjörn Bäck; Johan Nyberg; Matthias Weiszflog; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; gamma spectroscopy; lifetime measurement; lifetime; shell model; RDDS; DDCM; nuclear physics; nuclear structure; gamma spektroskopi; livstidsmätningar; livstid; skalmodellen; RDDS; DDCM; kärnfysik; kärnstruktur; Atomic; Subatomic and Astrophysics; Atomär fysik; subatomär fysik och astrofysik;

    Abstract : In this licentiate thesis, lifetimes of low lying excited states in the midshell region of tellurium isotopes are discussed. The nuclear lifetimes are interesting properties to study, since they are inversely proportional to the transition probabilities, which contain information on the underlying structure of the nucleus. READ MORE

  4. 2. Lifetime modeling and management of transformers

    Author : Johanna Rosenlind; Rajeev Thottappillill; Zhong Dong Wang; KTH; []
    Keywords : transformers; lifetime modeling; asset management; thermal modeling; lifetime estimation;

    Abstract : This work have studied and developed lifetime estimation methods for the power transformer and how these could be used for asset management purposes. It is researchperformed in the intersection of the fields of reliability theory, statistical analysis, and stochastic process theory applied to lifetime estimations and management of transformers. READ MORE

  5. 3. An eyesafe, long lifetime, stimulated Raman scattering laser

    Author : Stellan Wickström; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; absorber; eyesafety; deposits; laser; Raman scattering; lifetime;

    Abstract : .... READ MORE

  6. 4. Condition measuring and lifetime modelling of electrical power transmission equipment

    Author : Per Westerlund; Patrik Hilber; Tommie Lindquist; Carl-Ejnar Sölver; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; disconnectors; circuit breakers; reliability; lifetime; electric contacts; electric power transmission; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The electric grid is important in modern society, so the outages should be few. The transmission grid should have a real high availability, since it transports electrical energy across the country. Then, it is difficult to plan outages for maintenance and installation. READ MORE

  7. 5. Lifetime Surface Phosphor Thermometry - Technique Developments, Sources of Error, and Applications

    Author : Henrik Feuk; Förbränningsfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphor thermometry; thermographic phosphors; decay time; lifetime; laser-induced phosphorescence; thermometry; high temperature; surface thermometry; maximum entropy method; Kubelka-Munk; Fysicumarkivet A:2023:Feuk;

    Abstract : Temperature is not only a fundamental aspect of everyday life, but it is also an essential metric for thermal conversion systems concerning efficiency, emissions, and component lifetime estimation. Therefore, a vast range of different methods to measure temperature has been developed. READ MORE