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Books > Science & Mathematics > Physics > Nuclear structure physics
Vortices comprising swirling motion of matter are observable in
classical systems at all scales ranging from atomic size to the
scale of galaxies. In quantum mechanical systems, such vortices are
robust entities whose behaviours are governed by the strict rules
of topology. The physics of quantum vortices is pivotal to basic
science of quantum turbulence and high temperature superconductors,
and underpins emerging quantum technologies including topological
quantum computation. This handbook is aimed at providing a
dictionary style portal to the fascinating quantum world of
vortices.
The effect which now bears his name, was discovered in 1958 by
Rudolf Moessbauer at the Technical University of Munich. At first,
this appeared to be a phenomenon related to nuclear energy levels
that provided some information about excited state lifetimes and
quantum properties. However, it soon became apparent that
Moessbauer spectroscopy had applications in such diverse fields as
general relativity, solid state physics, chemistry, materials
science, biology, medical physics, archeology and art. It is the
extreme sensitivity of the effect to the atomic environment around
the probe atom as well as the ability to apply the technique to
some interesting and important elements, most notably iron, that is
responsible for the Moessbauer effect's extensive use. The present
volume reviews the historical development of the Moessbauer effect,
the experimental details, the basic physics of hyperfine
interactions and some of the numerous applications of Moessbauer
effect spectroscopy.
The growing number of scientific and technological applications of
plasma physics in the field of Aerospace Engineering requires that
graduate students and professionals understand their principles.
This introductory book is the expanded version of class notes of
lectures I taught for several years to students of Aerospace
Engineering and Physics. It is intended as a reading guide,
addressed to students and non-specialists to tackle later with more
advanced texts. To make the subject more accessible the book does
not follow the usual organization of standard textbooks in this
field and is divided in two parts. The first introduces the basic
kinetic theory (molecular collisions, mean free path, etc.) of
neutral gases in equilibrium in connection to the undergraduate
physics courses. The basic properties of ionized gases and plasmas
(Debye length, plasma frequencies, etc.) are addressed in relation
to their equilibrium states and the collisional processes at the
microscopic level. The physical description of short and long-range
(Coulomb) collisions and the more relevant collisions (elementary
processes) between electrons' ions and neutral atoms or molecules
are discussed. The second part introduces the physical description
of plasmas as a statistical system of interacting particles
introducing advanced concepts of kinetic theory, (non-equilibrium
distribution functions, Boltzmann collision operator, etc). The
fluid transport equations for plasmas of electron ions and neutral
atoms and the hydrodynamic models of interest in space science and
plasma technology are derived. The plasma production in the
laboratory in the context of the physics of electric breakdown is
also discussed. Finally, among the myriad of aerospace applications
of plasma physics, the low pressure microwave electron multipactor
breakdown and plasma thrusters for space propulsion are presented
in two separate chapters.
Our understanding of subatomic particles developed over many years,
although a clear picture of the different particles, their
interactions and their inter-relationships only emerged in the
latter part of the twentieth century. The first "subatomic
particles" to be investigated were those which exhibit readily
observable macroscopic behavior, specifically these are the photon,
which we observe as light and the electron, which is manifested as
electricity. The true nature of these particles, however, only
became clear within the last century or so. The development of the
Standard Model provided clarification of the way in which various
particles, specifically the hadrons, relate to one another and the
way in which their properties are determined by their structure.
The final piece, perhaps, of the final model, that is the means by
which some particles acquire mass, has just recently been clarified
with the observation of the Higgs boson. Since the 1970s it has
been known that the measured solar neutrino flux was inconsistent
with the flux predicted by solar models. The existence of neutrinos
with mass would allow for neutrino flavor oscillations and would
provide an explanation for this discrepancy. Only in the past few
years, has there been clear experimental evidence that neutrinos
have mass. The description of particle structure on the basis of
the Standard Model, along with recent discoveries concerning
neutrino properties, provides us with a comprehensive picture of
the properties of subatomic particles. Part I of the present book
provides an overview of the Standard Model of particle physics
including an overview of the discovery and properties of the Higgs
boson. Part II of the book summarizes the important investigations
into the physics of neutrinos and provides an overview of the
interpretation of these studies.
The International Linear Collider (ILC) is a mega-scale,
technically complex project, requiring large financial resources
and cooperation of thousands of scientists and engineers from all
over the world. Such a big and expensive project has to be
discussed publicly, and the planned goals have to be clearly
formulated. This book advocates for the demand for the project,
motivated by the current situation in particle physics. The natural
and most powerful way of obtaining new knowledge in particle
physics is to build a new collider with a larger energy. In this
approach, the Large Hadron Collider (LHC) was created and is now
operating at the world record center of-mass energy of 13 TeV.
Although the design of colliders with a larger energy of 50-100 TeV
has been discussed, the practical realization of such a project is
not possible for another 20-30 years. Of course, many new results
are expected from LHC over the next decade. However, we must also
think about other opportunities, and in particular, about the
construction of more dedicated experiments. There are many
potentially promising projects, however, the most obvious
possibility to achieve significant progress in particle physics in
the near future is the construction of a linear e+e- collider with
energies in the range (250-1000) GeV. Such a project, the ILC, is
proposed to be built in Kitakami, Japan. This book will discuss why
this project is important and which new discoveries can be expected
with this collider.
Terahertz (THz) radiation with frequencies between 100 GHz and 30
THz has developed into an important tool of science and technology,
with numerous applications in materials characterization, imaging,
sensor technologies, and telecommunications. Recent progress in THz
generation has provided ultrashort THz pulses with electric field
amplitudes of up to several megavolts/cm. This development opens
the new research field of nonlinear THz spectroscopy in which
strong light-matter interactions are exploited to induce quantum
excitations and/or charge transport and follow their nonequilibrium
dynamics in time-resolved experiments. This book introduces methods
of THz generation and nonlinear THz spectroscopy in a tutorial way,
discusses the relevant theoretical concepts, and presents
prototypical, experimental, and theoretical results in condensed
matter physics. The potential of nonlinear THz spectroscopy is
illustrated by recent research, including an overview of the
relevant literature.
Scattering theory provides a framework for understanding the
scattering of waves and particles. This book presents a simple
physical picture of diffractive nuclear scattering in terms of
semi-classical trajectories, illustrated throughout with examples
and case studies. Trajectories in a complex impact parameter plane
are discussed, and it stresses the importance of the analytical
properties of the phase shift function in this complex impact plane
in the asymptotic limit. Several new rainbow phenomena are also
discussed and illustrated. Written by Nobel Prize winner Roy J.
Glauber, and Per Osland, an expert in the field of particle
physics, the book illustrates the transition from quantum to
classical scattering, and provides a valuable resource for
researchers using scattering theory in nuclear, particle, atomic
and molecular physics.
While neutron halos were discovered 30 years ago, this is the first
book written on the subject of this exotic form of nuclei that
typically contain many more neutrons than stable isotopes of those
elements. It provides an introductory description of the halo and
outlines the discovery and evidence for its existence. It also
discusses different theoretical models of the halo's structure as
well as models and techniques in reaction theory that have allowed
us to study the halo. This is written at a level accessible to
graduate students starting a PhD in nuclear physics. Halo nuclei
are an exotic form of atomic nuclei that contain typically many
more neutrons than stable isotopes of those elements. To give you a
famous example, an atom of the element lithium has three electrons
orbiting a nucleus with three protons and, usually, either 3 or 4
neutrons. The difference in the number of neutrons gives us two
different isotopes of lithium, Li6 and Li7. But if you keep adding
neutrons to the nucleus you will eventually reach Li11, with still
3 protons (that means it's lithium) but with 8 neutrons. This
nucleus is so neutron-rich that the last two are very weakly bound
to the rest of the nucleus (a Li9 core). What happens is a quantum
mechanical effect: the two outer neutrons float around beyond the
rest of the nuclear core at a distance that is beyond the range of
the force that is holding them to the core. This is utterly
counterintuitive. It means the nucleus looks like a core plus
extended diffuse cloud of neutron probability: the halo. The author
of the book, Jim Al-Khalili, is a theoretician who published some
of the key papers on the structure of the halo in the mid and late
90s and was the first to determine its true size. This monograph is
based on review articles he has written on the mathematical models
used to determine the halo structure and the reactions used to
model that structure.
In an age of nuclear experimentation, military conflicts, and ISIS,
the Middle East is unstable, and the Iranian nuclear deal is
shrouded in controversy and mistrust. How will this agreement
impact US relations and strengths, not only in the region, but
around the world? Will the US be challenged for world leadership?
In Volatile State: Iran in the Nuclear Age, global affairs analyst
David Oualaalou explores the new geopolitical landscape and how it
will allow a nuclear Iran to flex its military, economic, and
ideological muscles with the assistance of Russia and China. Taking
under consideration how other governments have reacted to the
agreement, Oualaalou provides a fresh perspective on current and
future relations among the US and its current allies and provides a
compelling path forward for future strategies in the Middle East.
Volatile State is a "must read" to help understand the implications
and future with a nuclear deal with Iran.
In an age of nuclear experimentation, military conflicts, and ISIS,
the Middle East is unstable, and the Iranian nuclear deal is
shrouded in controversy and mistrust. How will this agreement
impact US relations and strengths, not only in the region, but
around the world? Will the US be challenged for world leadership?
In Volatile State: Iran in the Nuclear Age, global affairs analyst
David Oualaalou explores the new geopolitical landscape and how it
will allow a nuclear Iran to flex its military, economic, and
ideological muscles with the assistance of Russia and China. Taking
under consideration how other governments have reacted to the
agreement, Oualaalou provides a fresh perspective on current and
future relations among the US and its current allies and provides a
compelling path forward for future strategies in the Middle East.
Volatile State is a "must read" to help understand the implications
and future with a nuclear deal with Iran.
Optical properties, particularly in the infrared range of
wavelengths, continue to be of enormous interest to both material
scientists and device engineers. The need for the development of
standards for data of optical properties in the infrared range of
wavelengths is very timely considering the on-going transition of
nano-technology from fundamental R&D to manufacturing.
Radiative properties play a critical role in the processing,
process control and manufacturing of semiconductor materials,
devices, circuits and systems. The design and implementation of
real-time process control methods in manufacturing requires the
knowledge of the radiative properties of materials. Sensors and
imagers operate on the basis of the radiative properties of
materials. This book reviews the optical properties of various
semiconductors in the infrared range of wavelengths. Theoretical
and experimental studies of the radiative properties of
semiconductors are presented. Previous studies, potential
applications and future developments are outlined. In Chapter 1, an
introduction to the radiative properties is presented. Examples of
instrumentation for measurements of the radiative properties is
described in Chapter 2. In Chapters 3-11, case studies of the
radiative properties of several semiconductors are elucidated. The
modeling and applications of these properties are explained in
Chapters 12 and 13, respectively. In Chapter 14, examples of the
global infrastructure for these measurements are illustrated.
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