Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for subject:(beam induced heating). Showing records 1 – 2 of 2 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


University of Gothenburg / Göteborgs Universitet

1. Witala, Monika. Ion Solvation in Critical Binary Aqueous Solvents Probed by Advanced Synchrotron-Based Techniques.

Degree: 2016, University of Gothenburg / Göteborgs Universitet

The Poisson-Boltzmann equation is the standard tool for studying the electrostatic interactions in electrolyte solutions, although it neglects e.g. the ion size and ion-ion correlations. Even experimentally observed specific ion effects cannot be explained in a view of this approximation. Some recent investigations suggest the ion-solvent coupling as an important factor. This ion-solvent coupling plays particularly a role in systems composed of two different liquid components. The binary liquid mixtures containing salts have been found to exhibit a range of intriguing phenomena. First, a hydrophilic salt added to the binary solvent with suspended colloidal particles may cause emergence of anomalous interactions between those colloidal particles. A possible explanation is given by unequal partitioning of hydrophilic ions, driven by different preferences of cations and anions for one of the solvent's component. Second, if an antagonistic salt is added to the binary mixture, the solvent's mesoscale structuring has been found. Here, the responsible mechanism remains under debate, whether this occurs due to preferential ion solvation or ion size asymmetry. In order to address these underlaying mechanisms, I studied hydrophilic ion distributions and cation-to-anion size effects in binary solvent. For this purpose, I used advanced synchrotron-based techniques: grazing-incidence x-ray fluorescence (GIXF) and small-angle x-ray scattering (SAXS). The binary solvent was composed of water and 2,6-dimethylpyridine containing different salts: potassium chloride and symmetrical quaternary ammonium bromides. The obtained results are as follows. First, I show direct experimental evidence of microscopic segregation of hydrophilic ions at the binary liquid-vapor interface. Second, by proposing a method for determining the relative ion surface excess in binary solvents, I further quantify the observed interfacial excess of cations. Third, by choosing salts with systematic increase of cation-to-anion size ratio, I provide the first data on gradual build-up of the solvent's mesoscale order. Additionally, I demonstrate use of binary solvents for characterizing the x-ray beam-induced temperature increase in sample. This thesis work will contribute to the clarification of the salt-induced effects in aqueous binary solvents.

Subjects/Keywords: preferential ion solvation; microscopic segregation of hydrophilic ions; ion size asymmetry; critical binary liquid mixtures; 2,6-dimethylpyridine; potassium chloride; grazing-incidence x-ray fluorescence; small-angle x-ray scattering; mesoscale ordering; x-ray beam-induced local heating

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Witala, M. (2016). Ion Solvation in Critical Binary Aqueous Solvents Probed by Advanced Synchrotron-Based Techniques. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/43217

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Witala, Monika. “Ion Solvation in Critical Binary Aqueous Solvents Probed by Advanced Synchrotron-Based Techniques.” 2016. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed December 06, 2019. http://hdl.handle.net/2077/43217.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Witala, Monika. “Ion Solvation in Critical Binary Aqueous Solvents Probed by Advanced Synchrotron-Based Techniques.” 2016. Web. 06 Dec 2019.

Vancouver:

Witala M. Ion Solvation in Critical Binary Aqueous Solvents Probed by Advanced Synchrotron-Based Techniques. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 2016. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2077/43217.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Witala M. Ion Solvation in Critical Binary Aqueous Solvents Probed by Advanced Synchrotron-Based Techniques. [Thesis]. University of Gothenburg / Göteborgs Universitet; 2016. Available from: http://hdl.handle.net/2077/43217

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


EPFL

2. Zannini, Carlo. Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications.

Degree: 2013, EPFL

Subjects/Keywords: accelerator; collective effects; wake functions; impedance; CST Particle Studio; EM simulations; kickers; resistive wall; SPS; LHC; impedance measurements; coaxial wire; tune shift; power loss; beam induced heating; materials properties; complex permittivity; complex permeability

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Zannini, C. (2013). Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications. (Thesis). EPFL. Retrieved from http://infoscience.epfl.ch/record/187002

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Zannini, Carlo. “Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications.” 2013. Thesis, EPFL. Accessed December 06, 2019. http://infoscience.epfl.ch/record/187002.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Zannini, Carlo. “Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications.” 2013. Web. 06 Dec 2019.

Vancouver:

Zannini C. Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications. [Internet] [Thesis]. EPFL; 2013. [cited 2019 Dec 06]. Available from: http://infoscience.epfl.ch/record/187002.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zannini C. Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications. [Thesis]. EPFL; 2013. Available from: http://infoscience.epfl.ch/record/187002

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.