Essays about: "prisms"

Showing result 1 - 5 of 12 essays containing the word prisms.

  1. 1. A field-based estimation of eagle predation and scavenging on reindeer calves : towards mitigating human-wildlife conflicts

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Aemilius Johannes Van Der Meiden; [2023]
    Keywords : aquila chrysaetos; haliaeetus albicilla; rangifer tarandus; predation; repelling; human-wildlife conflict;

    Abstract : Eagle predation on semi-domesticated reindeer (Rangifer tarandus) calves, both golden (Aquila chrysaetos) and white-tailed eagle (Haliaeetus albicilla) is a well-known issue in Sweden. However, there is a knowledge gap regarding the balance between scavenging and hunting and the role that each of the eagle species has in this issue. READ MORE

  3. 2. Multi-spectral X-ray imaging with a laser-plasma accelerator

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Andrea Angella; [2022]
    Keywords : Multi-spectral imaging; single-photon counting; X-ray absorption spectroscopy; XAS; LWFA; laser-wakefield acceleration; K-edge; imaging; metal-detection algorithm; Physics and Astronomy;

    Abstract : This master thesis focuses on the creation of an algorithm to perform multispectral imaging of a metallic target using X-rays. The generation of an ultrashort high-power low-divergent X-ray beam is performed by means of a Ti:Sapphire laser driven wake-field plasma accelerator. READ MORE

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

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

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

    Abstract : 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. READ MORE

  5. 4. Investigation of a New Method for Drone Dazzling Using Laser

    University essay from Linköpings universitet/Reglerteknik

    Author : Jens Grundmark; [2021]
    Keywords : Drone countermeasure; Risley prisms; Camera dazzling; Laser;

    Abstract : Drones have become more common, and are commercially available for consumers. Small drones can be used for unauthorized information gathering, or to cause disruptions. This has created a need for safe, effective countermeasures against drones. In this thesis, a method for countermeasures against drone imaging is investigated. READ MORE

  6. 5. Resolving temporal links between the Högberget granite and the Wigström tungsten skarn deposit in Bergslagen (Sweden) using trace elements and U-Pb LA-ICPMS on complex zircons

    University essay from Lunds universitet/Geologiska institutionen

    Author : Anders Plan; [2020]
    Keywords : Bergslagen; Wigström; Högberget; geochronology; geochemistry; U-Pb; REE; trace element; zircon; hydrothermal zircon; LA-ICPMS; SEM; skarn; tungsten; wolfram; scheelite; deposit; ore; critical raw material; Earth and Environmental Sciences;

    Abstract : Combined U-Pb and REE trace element LA-ICPMS analyses were performed on zircons, from the scheelite-bearing Wigström skarn, associated micro-granitic dykes and the highly evolved parental Högberget (sensu stricto) granite. Combined systematic of zircon typology and microtextures, trace elements and isotopic chemistry suggest the presence of several diverse zircon types, spanning from early- to late- magmatic stage into a hydrothermal stage. READ MORE