Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Ultracold molecules"”.
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Ultracold Molecules: The Effect of Electromagnetic Fields
… and chemistry communities in the properties of ultracold molecules. Electromagnetic fields can be used to create, trap, and modify the collisional dynamics of ultracold molecules, and thus the properties of ultracold molecules in electromagnetic fields is of growing importance. This thesis …
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From strongly-interacting Bose-Fermi mixtures to ultracold molecules
This thesis describes experiments on ultracold quantum gases. First, I discuss quantum simulation involving mixtures of bosonic and fermionic atoms. Second, I present work on creating and controlling ultracold dipolar molecules of ²³Na⁴⁰K. The rich phase diagram of Bose-Fermi mixtures was studied …
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Ultracold molecules from ultracold atoms : interactions in sodium and lithium gas
… presents results from experiments in which ultracold Sodium-6 and Lithium-23 atomic gases were studied near a Feshbach resonance at high magnetic fields. The enhanced interactions between atoms in the presence of a molecular state enhance collisions, leading to inelastic decay and loss, …
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Quantum many-body physics of ultracold molecules in optical lattices: models and simulation methods
Includes bibliographical references.
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Ultracold Molecular Structure and Collisions
Ultracold molecules are instrumental in many fields of physics, such as high-resolution spectroscopy, quantum computation, and cold controlled chemistry. In this dissertation, we discuss the structure and collisions of ultracold molecules in the presence of external magnetic fields. We explore …
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Quantum Controlled Collisions and Magnetic Trapping of Ultracold NaLi Molecules
… is relatively feasible compared to other heavy molecules which makes it a promising benchmark system for theoretical quantum scattering calculations. This thesis describes three experiments and a numerical/theoretical work on ²³Na⁶Li molecules in the triplet ground state. The first two …
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Photoassociative Spectroscopy of Ultracold Argon and Krypton Confined in a Magneto Optical Trap
<p>Creating ultracold molecules has attracted considerable interest in the last decade. Once created, such molecules can be used for precision spectroscopy or to study chemical reactions at ultracold tem peratures. Several techniques have been developed to produce ultracold molecules; the most …
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Spectroscopy of Ultracold LiRb Molecules Using Ionization Detection
<p>We present spectroscopic studies of ultracold LiRb molecules using ionization detection. The molecules are created by cooling and trapping Li and Rb atoms in overlapping magneto-optical traps (MOTs) and using light resonant with a free-bound transition to create weakly bound excited state …
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Novel ground states of Bose-condensed gases
… of the recent frontiers, quantized vortices and ultracold molecules, are the subject of this thesis. The formation of highly-ordered vortex lattices in a Bose-condensed gas has been observed. These triangular lattices contain more than 150 vortices with lifetimes of several seconds. The vortices …
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Optical Excitation of Metastable Krypton and Photoassociative Spectroscopy of Ultracold RbAr
… we perform photoassociation spectroscopy in an ultracold, heteronuclear Rb + Ar* system. Photoassociation is a method that may be used to both 1) produce ultracold molecules, and 2) perform high-resolution spectroscopy on excited molecular states. Most work within the field has been performed …