Theoretical investigation of laser produced Ni-like Sn plasma

Download
2006
Yurdanur, Elif
In this thesis, theoretical investigation of nickel-like tin plasma is presented. X-ray production in a plasma medium produced by a laser beam is reviewed. Applications mostly, lithography are discussed. Two different schemes for x-ray lasing, namely, quasi-steady state and transient collisional excitation are explained and compared. The computer codes that are used for plasma, especially for laser produced plasma and x-ray laser including hydrodynamic codes, ray-trace codes and collisional radiative codes are discussed. The code used in this work, EHYBRID, is considered in more detail. An experimental setup which can allow x-ray lasing is designed for different plasma and laser parameters are analyzed by means of EHYBRID code. Results are briefly discussed and as a future work the realization of the related experiment is mentioned.

Suggestions

Theoretical investigations of the equol molecule: semi-empirical and density functional theory calculations
Erkoc, F; Yilmazer, M; Erkoç, Şakir (Elsevier BV, 2005-01-14)
The structural and electronic properties of the equol molecule, an estrogenic isoflavone. have been investigated theoretically by performing semi-empirical self-consistent field molecular orbital and density functional theory calculations. The geometry of the system has been optimized at the level of AMI method and the electronic properties have been calculated at the level of B3LYP functional.
Induction thermal plasma synthesis of Mg2Ni nanoparticles
Aktekin, Burak; ÇAKMAK, GÜLHAN; Öztürk, Tayfur (2014-06-15)
A study was carried out into possibility of thermal plasma synthesis of Mg2Ni nanoparticles. Both prealloyed powders and elemental powders were used as precursors in an inductively coupled thermal plasma incorporating two injection probes located axially in the reactor one from the top and the other from the bottom. The study has shown that the use of prealloyed Mg2Ni as precursor leads to its disintegration in the plasma condensing into separate phases and therefore was not suitable for the synthesis of Mg...
Theoretical prediction of bulk glass forming ability (BGFA) of Ti-Cu based multicomponent alloys
SUER, Sila; Mehrabov, Amdulla; Akdeniz, Mahmut Vedat (Elsevier BV, 2009-03-01)
The bulk glass forming ability (BGFA) of Ti-Cu based multicomponent alloys has been evaluated via theoretical modeling and computer simulation studies based on a combination of electronic theory of alloys in the pseudopotential approximation and the statistical thermodynamical theory of liquid alloys The. magnitude of atomic ordering energies, calculated by means of the electronic theory of alloys in the pseudopotential approximation, was subsequently used for calculation of the key thermodynamic parameters...
Pressure, gas ratio and operation voltage optimization of a helium-neon laser
Bilgili, Hulusi Birol; Esendemir, Akif; Department of Physics (2005)
Aim of this thesis is to investigate the optimum working parameters of a helium-neon laser. Partial pressure ratios, total pressures of the gases and voltage-current characteristics were studied. The analysis of the results includes the minor factors (impurity, volume, etc.) and their effects to main parameters (laser power, voltage, current). Tables, which were formed by measured optical parameters as wavelength and power, converted to graphs and from these graphs optimal working conditions for the laser a...
Novel annulation reactions for the synthesis of substituted pyrroles darzens reaction of acyl phosphonates with α-bromo ketones : selective synthesis of cis- and transepoxyphosphonates
Emrullah, Mustafa; Demir, Ayhan Sıtkı; Department of Chemistry (2009)
In the first part of this thesis, it is aimed to develope methods for the synthesis of trisubstituted pyrrrole derivatives. 2-Aminopyrrroles, alkoxy and sulfonyl substittitued pyrrole derivatives as well as pirolinones show interesting biological activities and are precursor of well know drugs. Although there is a number of methods for the synthesis of pyrroles, the synthesis of 2-aminopyrroles is limited to few works and is not widely known. Therefore, it is still an important goal in organic chemistry to ...
Citation Formats
E. Yurdanur, “Theoretical investigation of laser produced Ni-like Sn plasma,” M.S. - Master of Science, Middle East Technical University, 2006.