Sökning: "chirality"

Visar resultat 6 - 10 av 16 uppsatser innehållade ordet chirality.

1. 6. Measuring the Pulse Duration and the Time-Dependent Polarisation State of Ultrashort Laser Pulses with the D-Scan Technique

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

   Författare :Daniel Díaz Rivas; [2022]
   Nyckelord :pulse characterisation; ultrashort; laser; femtosecond; dispersion scan; polarisation; wave plate; temporal reconstruction; electric field reconstruction; time-dependent polarisation; polarisation gate; Physics and Astronomy;

   Sammanfattning : Ultrashort laser pulses with time-dependent polarisation states have many applications, such as the generation of isolated attosecond pulses and the study of the optical chirality of molecules. In this project the polarisation gate, built from two quarter-wave plates of different orders, is thoroughly characterised in experiment and simulation. LÄS MER

3. 7. Phenomenology of Exotic Decays of Vector-Like Quark X5/3 into Doubly-Charged ScalarXinto Doubly-Charged Scalar

   L3-uppsats, Uppsala universitet/Högenergifysik

   Författare :Jakub Salko; [2020]
   Nyckelord :;

   Sammanfattning : Searches for the Vector-Like Quarks usually look for their signatures assuming they decay purely into Standard Model particles. In this paper, we explore one possible exotic decay of the Vector-Like Quark with electric charge +5/3, X5/3. LÄS MER

4. 8. Aqueous self-assembly behaviour alteration derived from primary structure changes of model peptides

   Master-uppsats, Lunds universitet/Kemiska institutionen

   Författare :Marcus Bäcklund; [2020]
   Nyckelord :Model peptides; self-assembly; SAXS; FTIR; CD; physical chemistry; fysikalisk kemi; Chemistry;

   Sammanfattning : Understanding of the self-assembly behaviour of peptides is of great interest within several different areas such as neurodegenerative diseases, biotechnology, and peptide pharmaceuticals. In this work we have compared the impact on the self-assembly behaviour derived from systematic changes of the primary structure of A8K, where A denotes alanine and K lysine. LÄS MER

5. 9. The Chirality-Flow Method for Massive and Electroweak Amplitudes

   Master-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Joakim Alnefjord; [2020]
   Nyckelord :chirality-flow; chirality; flow; spinor-helicity; tree-level; diagram; amplitude; Physics and Astronomy;

   Sammanfattning : In this thesis I extend the chirality-flow method to the full standard model at tree-level by including massive particles and electroweak interactions. The chirality-flow method is a new diagrammatic method for calculating Feynman diagrams that is based on the spinor-helicity formalism, that before this thesis was written had been worked out for massless QED and QCD at tree-level. LÄS MER

7. 10. Formulation of Model Problem for Chirality Induced Spin Selectivity Effect

   Kandidat-uppsats, Uppsala universitet/Materialteori

   Författare :Henrik Bruce; [2020]
   Nyckelord :Chirality; Spin selectivity; CISS;

   Sammanfattning : Spin dependent electron transport in chiral molecules, the so-called chirality induced spin selectivity (CISS) effect, have attracted much attention over the past few years. Experimentally the spin polarization has been detected, and there is a theoretical consensus on the necessity of both spin-orbit coupling and geometrical helicity in order to get a non-vanishing spin polarization. LÄS MER