No description available.

Yang, Mei. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 73-75). / Abstracts in English and Chinese. / THESIS COMMITTEE --- p.II / ABSTRACT --- p.III / 中文摘要 --- p.V / ACKNOWLEDGENTS --- p.VI / TABLE OF CONTENTS --- p.VII / LIST OF FIGURES --- p.IX / LIST OF TABLES --- p.X / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter 1.1 --- Matrix isolation spectroscopy --- p.1 / Chapter 1.2 --- Properties of Molecular Hydrogen： A Review --- p.3 / Chapter 1.3 --- Unique properties of solid hydrogen --- p.8 / Chapter CHAPTER 2 --- THEORETICAL BACKGROUND --- p.12 / Chapter 2.1 --- Multipole moments of molecules --- p.12 / Chapter 2.2 --- POLARIZABILITY --- p.14 / Chapter 2.3 --- Pair intermolecular potential --- p.15 / Chapter 2.4 --- Multipole induced transitions --- p.20 / Chapter CHAPTER 3 --- THEORY OF MATRIX ISOLATED 02 IN SOLID PARAHYDROGEN --- p.24 / Chapter 3.1 --- Structural properties of 1602 --- p.24 / Chapter 3.1.1 --- Group theoretical treatment --- p.24 / Chapter 3.1.2 --- Rovibrational wavefunctions and energies --- p.26 / Chapter 3.2 --- O2 isolated in hcp crystal field of parahydrogen --- p.31 / Chapter 3.2.1 --- Group theory --- p.31 / Chapter 3.2.2 --- Crystal field splitting --- p.37 / Chapter 3.2.3 --- Effect of quadrupolar induction --- p.42 / Chapter 3.2.4 --- Pure vibrational transitions --- p.42 / Chapter 3.2.5 --- Calculation of quadrupole matrix elements --- p.47 / Chapter CHAPTER 4 --- RESULTS AND DISCUSSION --- p.54 / Chapter 4.1 --- Results --- p.55 / Chapter 4.1.1 --- Effect of quadrupolar induction --- p.55 / Chapter 4.1.2 --- Crystal field splitting of rovibrational levels of O2 in p-H2 matrix --- p.57 / Chapter 4.1.3 --- Predicted pure vibrational spectrum --- p.64 / Chapter 4.2 --- Discussion and Conclusion --- p.67 / REFERENCE --- p.73

Yan, Lei. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 50-52). / Abstracts in English and Chinese. / Title Page --- p.I / Thesis Committee --- p.II / Abstract --- p.III / 摘要 --- p.IV / Acknowledgements --- p.V / Table of Contents --- p.1 / Chapter Chapter I. --- Introduction --- p.3 / Chapter Chapter II. --- Properties of Hydrogen --- p.6 / Chapter A. --- Spectroscopic Properties of Hydrogen Molecules --- p.6 / Chapter B. --- Properties of Solid Hydrogen --- p.9 / Chapter C. --- Solid Hydrogen as a Matrix Material --- p.12 / Chapter Chapter III. --- Experimental Apparatus --- p.16 / Chapter A. --- Fourier Transformer Spectrometer --- p.16 / Chapter B. --- Cryostat and Sample Cell --- p.23 / Chapter C. --- Gas Handling System and ortho-para Converter --- p.25 / Chapter D. --- Determination of o-H2 Concentration --- p.29 / Chapter E. --- Preparation of Matrix-isolated Species --- p.32 / Chapter Chapter IV. --- Spectroscopic studies of CO in solid hydrogen --- p.34 / Chapter A. --- "Matrix Isolation Spectroscopy of CO, brief overview" --- p.34 / Chapter B. --- Observation and Preliminary Analysis --- p.35 / Chapter i. --- CO in Normal H2 Matrix --- p.35 / Chapter ii. --- CO in Hydrogen Matrix of 50/50 Mixture --- p.37 / Chapter iii. --- CO in Para-enriched Solid Matrix --- p.39 / Chapter C. --- Discussion --- p.46 / Chapter Chapter V. --- Concluding Remarks --- p.48 / Reference --- p.50

Thesis (M.S. in chemistry)--Washington State University, December 2007. / Includes bibliographical references (p. 46-47).

Thesis (Ph. D.)--University of Wyoming, 2007. / Title from PDF title page (viewed on Feb. 6, 2009). Includes bibliographical references.

Thesis (M.S.)--Florida State University, 2004. / Advisor: Dr. Steven Van Sciver, Florida State University, College of Engineering, Department of Mechanical Engineering. Title and description from dissertation home page (viewed Sept. 23, 2004). Includes bibliographical references.

Thesis--University of Illinois at Urbana-Champaign, 1977. / Includes bibliographical references (p. 126-128).

No description available.

No description available.

L’interaction d’un laser de haute énergie avec une cible fine d’hydrogène créé un plasma à l’intérieur duquel le champ électrostatique peut accélérer des protons jusqu’à des énergies de quelques dizaines de MeV. Ce domaine de la physique est appelé l’accélération laser/plasma.C’est dans ce contexte que le Service des Basses Températures (CEA, France) a développé en 2014 un prototype permettant de produire par extrusion des rubans d’hydrogène solide de un millimètre de large et de quelques dizaines de micromètres d’épaisseur.Cette thèse étudie la géométrie, la vitesse et la stabilité de ces rubans, qui sont des critères fondamentaux à l’efficacité de l’accélération laser/plasma. Les résultats des campagnes expérimentales menées avec ce prototype dans différents centres laser sont également décrits. Le deuxième et principal objectif de cette thèse consiste à caractériser et mesurer de façon précise les propriétés rhéologiques de l’hydrogène solide, afin de modéliser son écoulement à travers une buse d’extrusion d’épaisseur submillimétrique. Ce travail a consisté à concevoir un rhéomètre cryogénique innovant capable de générer un cisaillement continu d’hydrogène solide à des températures contrôlées, inférieures à 14 kelvins. La déformation de cisaillement de l’hydrogène solide est observée et décrite en détails, et sa viscosité apparente près de son point de fusion est quantifiée. Une loi régissant son écoulement est proposée, puis vérifiée par simulation numérique. / The interaction between a high-energy laser and a thin hydrogen target can generate an electrostatic field accelerating protons up to a few tens of MeV. This scientific field is called "laser/plasma acceleration". In this context, the Low Temperature Laboratory (CEA, France) has designed in 2014 a prototype extruding thin solid-hydrogen ribbon-shaped targets of onemillimeter in width and a few tens of micrometers in thickness.This Ph.D. thesis studies the geometry, the stability and the velocity of these ribbons, which are critical in the laser/matter interaction. Experimental campaigns led with this prototype in different laser facilities are described as well. The second and main objective of this Ph.D. thesisis to charaterize and measure the rheological properties of solid Hydrogen, in order to model its flow through a submillimeter-wide extrusion nozzle. This characterisation has been made possible through the design of an innovative cryogenic rheometer generating a continuous shear deformation in solid hydrogen at controled temperature, below 14 kelvins. Shear deformationof solid Hydrogen is studied and detailled, and its apparent viscosity near its melting point is measured. A deformation law is stated, then tested by numerical simulation.