Sökning: "radiative capture"

Visar resultat 16 - 20 av 25 avhandlingar innehållade orden radiative capture.

1. 16. Electron transfer in slow collisions of highly charged ions with atoms and molecules

   Författare :Alexander Langereis; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; fysik; Physics;

   Sammanfattning : Several spectroscopic methods have been used to study single- and double electron transfer in slow collisions between highly charged ions with neutral atoms and the C60 molecule.Radiative and non-radiative decay from high-lying doubly-excited states, populated in slow (v = 0.40 a.u. LÄS MER

3. 17. Experimental and modelling studies of particle radiation in flames

   Författare :Daniel Bäckström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Combustion of solid fuels is an important part of many industrial and power generation processes. The global use of coal in these processes is vast and thus also the related emissions of CO2 to the atmosphere. It is not possible to continue on the path with continuously increasing emissions of CO2 if the global climate targets should be met. LÄS MER

4. 18. Angle Resolved Light Scattering in Turbid Media : Analysis and Applications

   Författare :Magnus Neuman; Per Edström; Torbjörn Löfqvist; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; Teknisk fysik;

   Sammanfattning : Light scattering in turbid media is essential for such diverse application areas as paper and print, computer rendering, optical tomography, astrophysics and remote sensing. This thesis investigates angular variations of light reflected from plane-parallel turbid media using both mathematical models and reflectance measurements, and deals with several applications. LÄS MER

5. 19. Modeling long-term variability and change of soil moisture and groundwater level - from catchment to global scale

   Författare :Lucile Verrot; Georgia Destouni; Aldo Fiori; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydrology; physically-based model; groundwater; soil moisture; Physical Geography; naturgeografi;

   Sammanfattning : The water stored in and flowing through the subsurface is fundamental for sustaining human activities and needs, feeding water and its constituents to surface water bodies and supporting the functioning of their ecosystems. Quantifying the changes that affect the subsurface water is crucial for our understanding of its dynamics and changes driven by climate change and other changes in the landscape, such as in land-use and water-use. LÄS MER

7. 20. Optical properties of GaN and InGaN studied by time- and spatially-resolved spectroscopy

   Författare :Tomas Uždavinys; Saulius Marcinkevičius; Audrius Alkauskas; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gallium nitride; InGaN; near-field microscopy; photoexcited carrier dynamics; intervalley energy; Fe centers; In incorporation; Physics; Fysik;

   Sammanfattning : The past decade has seen rapid expansion in the use of group III-nitride based devices. White InGaN LEDs are substituting incandescent light bulbs, space satellite industry adopting ion-radiation-resistant GaN transistors, and AlGaN deep UV LEDs are increasingly being used for water disinfection and air purification. LÄS MER