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We show that high-resolution laser spectroscopy can probe surface interactions of gas confined in nanocavities of porous materials. We report on strong line broadening and unfamiliar line shapes due to tight confinement, as well as signal enhancement due to multiple photon scattering. This new domain of laser spectroscopy constitute a challenge for the theory of collisions and spectroscopic line s
For the production of basic materials a deep decarbonization fundamentally requires the development of new process technologies. However, the climate policies currently adopted in G8 countries mainly reward incremental improvements and preserve industrial structures rather than induce innovation and preparations for a low-carbon transition. The current policy approach is motivated by fear of carbo
Auger-electron spectroscopy (AES) has developed to a major tool for chemical identification and for characterization of solid surfaces. As first emphasized by Lander[1], it can also be used a spectroscopy for gaining information on occupied electron states and their interactions. However, AES gives a far less direct picture of the occupied states than does, for example, angle-resolved photoemissio
Methods for modelling the behaviour of light in materials which not only absorb, but also scatter light are reviewed, with special emphasis on the Monte Carlo method and Kubelka-Munk theory as applied to biological samples. Two methods for checking model performance are also described, namely determination of photon transit times and fiberoptic measurement of light inside tissues. The directional
Tetra Pak delivers food packing services world-wide and uses multilayer packaging materials to protect the food product from being affected by the environment. Loss of adhesion between the polymer and the aluminium layer in Tetra Paks packaging materials has proven to be a serious problem casing the package to lose its integrity and the food product to spoil. The problem is relatively unstudied bu
Surfactant-templated materials are created through self-assembly in solutions containing both surfactant micelles and an inorganic species. The resulting materials are composites containing an organized surfactant micelle array encapsulated in the inorganic material. Removal of the surfactants generates nanoscale pores which replicate the highly organized micelle phase, producing high surface area
Webinars on 2024 MSCA calls – Forskningsservice | Research Services Hoppa till huvudinnehåll About us Newsletter Newsletter archive Swedish funding bodies Find funding via Pivot-RP Our networks Further LU support Om bloggen och tillgänglighet Horizon Europe Our services Contact details Thematic news Contact us Sök Sök Stäng Meny Meny Forskningsservice | Research Services Webinars on 2024 MSCA call
https://fs.blogg.lu.se/webinars-on-2024-msca-calls/ - 2026-07-20
We study high-order harmonic generation in argon driven by an intense 800 nm laser field and a small fraction of its second harmonic. The intensity and divergence of the emitted even and odd harmonics are strongly modulated as a function of the relative delay between the two fields. We provide a detailed analysis of the underlying interference effects. The interference changes drastically when app
We have generated attosecond pulse trains in an ensemble of randomly aligned nitrogen molecules. Measurements of the high-order harmonic relative phases and amplitudes allow us to reconstruct the temporal profile of the attosecond pulses. We show that in the considered spectral range, the latter is very similar to the pulse train generated in argon under the same conditions. We discuss the possibl
We describe theoretically the generation of ultrashort (subfemtosecond) pulses using high-order harmonics of a laser pulse with a time-dependent degree of ellipticity. The single-atom response is calculated by using a low-frequency strong-field approximation. Propagation effects are taken into account using a method going beyond the slowly varying envelope approximation. Propagation modifies signi
We study the influence of the generation conditions on the group delay of attosecond pulses in high-order harmonic generation in gases. The group delay relative to the fundamental field is found to decrease with increasing gas pressure in the generation cell, reflecting a temporal walk-off due to the dispersive properties of the nonlinear medium. This effect is well reproduced using an on-axis pha
In times where commerce has shifted into e-commerce, the influence of price comparison websites has become unmistakable. In contrast to previous literature, studying the contemporary effects on demand for retailers in decreasing rankings, we have studied the event from a strategic perspective of pricing. With a unique dataset of more than 20 million observations from the Swedish price comparison s
Drawing on selected discourses of non-essentialist ecofeminism, this article proposes and substantiates an ecofeminist position. This distinct position is shown to bring with it a capacity to challenge widely uncontested, corporate-produced truths regarding the benefits and the legitimacy of certain commercial activities. Three historical cases inform the discussion: the fights led by Rachel Carso
Outlines the development of PhD-education in the Nordic-Baltic area.
March 15, 2024 1(1) Krzysztof Podgórski Prefekt Statistisk institutionen Lunds Universittet - Ekonomihögskolan EHL Fakultetsledningen Ämnesspecifika befordringskriterier, befordran till professor vid EHL– beslut: Efter samr̊ad med fakulteten vid Institutionen för statistik har följande kriterier som är tillägg till universitetets och skolans krav beslutats för: • En betydande extern forskn
