15 Result(s)
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Article
Open AccessThe Emirates Mars Mission
The Emirates Mars Mission (EMM) was launched to Mars in the summer of 2020, and is the first interplanetary spacecraft mission undertaken by the United Arab Emirates (UAE). The mission has multiple programmati...
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Open AccessThe Emirates Exploration Imager (EXI) Instrument on the Emirates Mars Mission (EMM) Hope Mission
The Emirates Exploration Imager (EXI) on-board the Emirates Mars Mission (EMM) offers both regional and global imaging capabilities for studies of the Martian atmosphere. EXI is a framing camera with a field-o...
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Open AccessNOMAD, an Integrated Suite of Three Spectrometers for the ExoMars Trace Gas Mission: Technical Description, Science Objectives and Expected Performance
The NOMAD (“Nadir and Occultation for MArs Discovery”) spectrometer suite on board the ExoMars Trace Gas Orbiter (TGO) has been designed to investigate the composition of Mars’ atmosphere, with a particular fo...
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Arc Shape of High-Intensity Discharge Lamps: Simulation and Experiments
A stationary compressible three-dimensional (3D) model of photothermal processes inside an arc tube of a high-intensity discharge lamp is developed on the basis of the finite element method. It takes plasma, e...
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Photoacoustic Spectroscopy Using a MEMS Microphone with Inter-IC Sound Digital Output
In photoacoustic spectroscopy that is adopted for gas sensing, microphones are usually used to detect the pressure variation inside the sample cell. The application of a new commercial inter-integrated circuit...
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Article
Effect of pseudohalides in pentadentate-iron(III) complexes studied by DFT and Mössbauer spectroscopy
Mononuclear iron complexes in which the iron(III) ion is coordinated by a pentadentate Schiff base ligand L5 with two phenolate, two imino and one amino group can exhibit a spin crossover. In this contribution ex...
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Shape-Optimized Photoacoustic Cell: Numerical Consolidation and Experimental Confirmation
The signal of photoacoustic sensors depends considerably on the shape of the sample cell. Taking advantage of acoustical resonances results in a signal boost and enables highly sensitive analyzers with low det...
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Numerical shape optimization of photoacoustic resonators
The sensitivity of photoacoustic sensors strongly depends on the shape of the acoustical resonator. Up to now, mainly photoacoustic sensors consisting of a number of cylindrical parts have been investigated (c...
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Photoacoustic CO2 sensor based on a DFB diode laser at 2.7 μm
We present a new detection scheme for carbon dioxide (CO2) based on a custom-made room temperature distributed feedback (DFB) diode laser at 2.7 μm, currently representing one of the lasers with the highest em...
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Laser-Heated High-Temperature NMR: A Time-Resolution Study
The time resolution achievable in in situ high-temperature nuclear magnetic resonance experiments is investigated using laser heating of refractory materials. Three case studies using 27Al in alumina nanoparticle...
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Structure of polymer micelles close to the solid interface
Block copolymers are widely used in industry. For scientific interests their aqueous solutions offer a model system for the investigation of crystallisation as the macromolecules agglomerate for elevated conce...
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Investigation of sheared liquids by neutron backscattering and reflectivity
We have investigated by neutron scattering structural and dynamical properties of water solutions of the triblock copolymer P85 under shear. To this end a shear cell that suits the requirements for neutron bac...
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Observation of small metastable multiply charged CsI clusters embedded inside rare gas clusters
Medium size Kr and Ar clusters <N>∼200-400 were used to pick up and aggregate CsI molecules. By varying the number of pick-up events it was possible to change the size of the guest cluster and the thickness of t...
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Article
Aggregation of small CsI clusters inside Ar clusters: ionization and fragmentation under soft X-ray excitation
Medium size Ar clusters <N>∼500 were used to pick-up and aggregate CsI molecules. The primary Ar cluster beam can be converted into a beam of bare or Ar-covered alkali halide clusters by varying the number of pic...
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Deconfinement phase transition in QCD with heavy quarks
Using the pseudo-fermion method to simulate QCD with dynamical quarks we investigate the effects of heavy dynamical quarks of 2 flavours on the deconfinement phase transition in the quenched QCD. As the mass o...
