Download or read book Photoassociation of Ultracold CsYb Molecules and Determination of Interspecies Scattering Lengths written by Alexander Guttridge and published by Springer. This book was released on 2019-06-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis lays the groundwork for producing a new class of ultracold molecule by associating an alkali-metal atom and a closed-shell alkaline-earth-like atom, specifically Cs and Yb. Such molecules exhibit both a magnetic dipole moment and an electric dipole moment in their ground state. This extra degree of freedom opens up new avenues of research including the study of exotic states of matter, the shielding of molecular collisions and the simulation of lattice spin models. In detail, the thesis reports the first and only ultracold mixture of Cs and Yb in the world, giving details of the methods used to cool such contrasting atomic species together. Using sensitive two-colour photoassociation measurements to measure the binding energies of the near-threshold CsYb molecular levels in the electronic ground state has allowed the previously unknown scattering lengths to be accurately determined for all the Cs–Yb isotopic combinations. As part of this work, the one-photon photoassociation of ultracold Cs*Yb is also studied, yielding useful information on the excited-state potential. Knowledge of the scattering lengths enables a strategy to be devised to cool both species to quantum degeneracy and, crucially, determines the positions of interspecies Feshbach resonances required for efficient association of ground-state CsYb molecules. With these results, the prospect of bringing a new molecule into the ultracold regime has become considerably closer.
Download or read book Bose Einstein Condensation of Molecules written by Selim Jochim and published by . This book was released on 2005 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cold Chemistry written by Olivier Dulieu and published by Royal Society of Chemistry. This book was released on 2017-12-06 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen tremendous progress in research on cold and controlled molecular collisions, both in theory and in experiment. The advent of techniques to prepare cold and ultracold molecules and ions, to store them in optical lattices or in charged quasicristalline structures, and to use them in crossed or merged beam experiments have opened many new possibilities to study the most fundamental aspects of molecular interactions. At the same time, theoretical work has made progress in tackling these problems and accurately describing quantum effects in complex systems, and in proposing viable options to control chemical reactions at ultralow energies. Through tutorials on both the theoretical and experimental aspects of research in cold and ultracold molecular collisions, this book provides advanced undergraduate students, graduate students and researchers with the foundations needed to understand this exciting field.
Download or read book CP Violation Without Strangeness written by Iosif B. Khriplovich and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electric dipole moments (EDMs) have interested physicists since 1950, when it was first suggested that there was no experimental evidence that nuclear forces are symmetric under parity (P) transformation. This question was regarded as speculative because the existence of an EDM, in addition to P violation, requires a violation of time-reversal (T) symmetry. In 1964 it was discovered that the invariance under CP transformation, which combines charge conjugation (C) with parity, is violated in K-meson decays. This provided a new incentive for EDM searches. Since the combined operations of CPT are expected to leave a system invariant, breakdown of CP invariance should be accompanied by a violation of time-reversal symmetry. Thus there is a reason to expect that EDMs should exist at some level. The original neutron EDM experiments were later supplemented with checks of T invariance in atoms and molecules. These investigations are pursued now by many groups. Over the years, the upper limit on the neutron EDM has been improved by seven orders of magnitude, and the upper limit on the electron EDM obtained in atomic experiments is even more strict.
Download or read book NIST JANAF Thermochemical Tables written by Malcolm W. Jr. Chase and published by American Institute of Physics. This book was released on 1998-08-01 with total page 1952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interactions in Ultracold Gases written by Matthias Weidemüller and published by John Wiley & Sons. This book was released on 2011-02-10 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arising from a workshop, this book surveys the physics of ultracold atoms and molecules taking into consideration the latest research on ultracold phenomena, such as Bose Einstein condensation and quantum computing. Several reputed authors provide an introduction to the field, covering recent experimental results on atom and molecule cooling as well as the theoretical treatment.
Download or read book Thermal Constants of Substances written by V. S. Yungman and published by John Wiley & Sons. This book was released on 1999 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nucleon Optical Model written by Peter Edward Hodgson and published by World Scientific. This book was released on 1994 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nucleon optical model is widely used to calculate the elastic scattering cross-sections and polarisations for the interaction of neutrons and protons with atomic nuclei. The optical model potentials not only describe the scattering but also provide the wave functions needed to analyse a wide range of nuclear reactions. They also unify many aspects of nuclear reactions and nuclear structure. This book consists of a comprehensive introduction to the subject and a selection of papers by the author describing the optical model in detail. It contains full references to the original literature with many examples of the application of the model to the analysis of experimental data.
Download or read book Fast Neutron Data written by Herman Feshbach and published by . This book was released on 1950 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Caspar Hauser written by David Constantine and published by Bloodaxe Books. This book was released on 1994 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of Constantine's fifth book of poems is the enigmatic German Caspar Hauser, who was incarcerated for most of his childhood, released, and then murdered. He appeared in Nuremberg in 1828, able to write his name and say without understanding it one sentence: "I want to be a rider like my father was". Taken in by well-wishers one of whom fell in love with him he was attacked with a razor by an unknown assailant. Three years later, the eccentric Lord Stanhope made him his ward and left him in another town to go travelling. In 1833 he was killed. Constantine's epic poem unravels the strange strands of Caspar's short life. He touches on the intrigues of the time (Caspar may have had a claim to the throne of Baden), but his cantos are mainly concerned with Caspar's innocence and the extraordinary reactions of his untried nervous system to a new life in daylight, and the longings and hopes he awakened in others.
Download or read book Mein Weg als Deutscher und Jude written by Jakob Wassermann and published by . This book was released on 1921 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
