Sökning: "Per Lundhammar"

Hittade 2 uppsatser innehållade orden Per Lundhammar.

1. 1. Detective Quantum Efficiency in the Image Domain

   Master-uppsats, KTH/Fysik

   Författare :Per Lundhammar; [2022]
   Nyckelord :detective quantum efficiency; linear systems theory; projection domain; image domain; x-ray imaging; detektiv kvanteffektivitet; linjär-systemteori; projektionsdomän; bilddomän; röntgenavbildning;

   Sammanfattning : We investigate the signal and noise transform characteristics from the projection domain to the image domain in a linear systems theory framework and predictions of the DQE within this framework are made. A simulation study of a photon counting silicon detector is made from which the energy information is used in order to produce synthetic monoenergetic images. LÄS MER

3. 2. A Non-Relativistic Model of Tetraquarks

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Per Lundhammar; [2020]
   Nyckelord :;

   Sammanfattning : In this thesis, a non-relativistic model of tetraquark in a diquark-antidiquark configuration is investigated. Using a variation of the Cornell potential, the Schrödinger equation is solved numerically, and the four-body problem of the tetraquark is separated into to three two-body problems. LÄS MER