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Books > Science & Mathematics > Science: general issues > Scientific standards
Measurements and experiments are made each and every day, in fields
as disparate as particle physics, chemistry, economics and
medicine, but have you ever wondered why it is that a particular
experiment has been designed to be the way it is. Indeed, how do
you design an experiment to measure something whose value is
unknown, and what should your considerations be on deciding whether
an experiment has yielded the sought after, or indeed any useful
result? These are old questions, and they are the reason behind
this volume. We will explore the origins of the methods of data
analysis that are today routinely applied to all measurements, but
which were unknown before the mid-19th Century. Anyone who is
interested in the relationship between the precision and accuracy
of measurements will find this volume useful. Whether you are a
physicist, a chemist, a social scientist, or a student studying one
of these subjects, you will discover that the basis of measurement
is the struggle to identify the needle of useful data hidden in the
haystack of obscuring background noise.
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.
Time-resolved optical stimulation of luminescence has become
established as an important method for measurement of optically
stimulated luminescence. Its enduring appeal is easy to see with
the number of materials studied growing from the initial focus on
natural minerals such as quartz and feldspar to synthetic
dosimeters such as i !-Al2O3:C, BeO and YAlO3:Mn2+. The aim of
time-resolved optical stimulation is to separate in time the
stimulation and emission of luminescence. The luminescence is
stimulated from a sample using a brief light pulse. The ensuing
luminescence can be monitored either during stimulation in the
presence of scattered stimulating light or after the light-pulse.
The time-resolved luminescence spectrum measured in this way can be
resolved into components each with a distinct lifetime. The
lifetimes are linked to physical processes of luminescence and thus
provide a means to study dynamics involving charge transfer between
point-defects in materials. This book is devoted to time-resolved
optically stimulated luminescence and is suitable for researchers
with an interest in the study of point-defects using luminescence
methods. The book first sets the method within the context of
luminescence field at large and then provides an overview of the
instrumentation used. There is much attention on models for
time-resolved optically stimulated luminescence, two of which are
analytical and the third of which is based on computational
simulation of experimental results. To bring relevance to the
discussion, the book draws on examples from studies on quartz and
a-Al2O3:C, two materials widely investigated using this method. The
book shows how kinetic analysis for various thermal effects such as
thermal quenching and thermal assistance can be investigated using
time-resolved luminescence. Although use of light sums is an
obvious choice for this, contemporary work is discussed to show the
versatility of using other alternative methods such the dynamic
throughput.
Data integrity is the hottest topic in the pharmaceutical industry.
Global regulatory agencies have issued guidance, after guidance
after guidance in the past few years, most of which does not offer
practical advice on how to implement policies, procedures and
processes to ensure integrity. These guidances state what but not
how. Additionally, key stages of analysis that impact data
integrity are omitted entirely. The aim of this book is to provide
practical and detailed help on how to implement data integrity and
data governance for regulated analytical laboratories working in or
for the pharmaceutical industry. It provides clarification of the
regulatory issues and trends, and gives practical methods for
meeting regulatory requirements and guidance. Using a data
integrity model as a basis, the principles of data integrity and
data governance are expanded into practical steps for regulated
laboratories to implement. The author uses case study examples to
illustrate his points and provides instructions for applying the
principles of data integrity and data governance to individual
laboratory needs. This book is a useful reference for analytical
chemists and scientists, management and senior management working
in regulated laboratories requiring either an understanding about
data integrity or help in implementing practical solutions.
Consultants will also benefit from the practical guidance provided.
Dawn is the first mission to orbit a main belt asteroid and the
first scientific mission to use ion propulsion. Major objectives of
this mission include mapping of the surfaces of 4 Vesta and 1
Ceres, determining its topography from stereo measurements,
determining its mineralogy, measuring its elemental composition and
obtaining gravity data. This book describes the Dawn mission, its
exploration and scientific objectives, the instruments that
accomplish those objectives, the operations plan and the education
and outreach plan. It is directed to those studying asteroids and
the evolution of the solar system. This volume will be a valuable
reference for anyone who uses data from the instruments of the DAWN
mission. Previously published in Space Science Reviews, Vol.
163/1-4, 2012.
Since the turn of the century, the increasing availability of
photoelectron imaging experiments, along with the increasing
sophistication of experimental techniques, and the availability of
computational resources for analysis and numerics, has allowed for
significant developments in such photoelectron metrology. Quantum
Metrology with Photoelectrons, Volume 2: Applications and Advances
discusses the fundamental concepts along with recent and emerging
applications. Volume 2 explores the applications and development of
quantum metrology schemes based on photoelectron measurements. The
author begins with a brief historical background on ""complete""
photoionization experiments, followed by the details of state
reconstruction methodologies from experimental measurements. Three
specific applications of quantum metrology schemes are discussed in
detail. In addition, the book provides advances, future directions,
and an outlook including (ongoing) work to generalise these schemes
and extend them to dynamical many-body systems. Volume 2 will be of
interest to readers wishing to see the (sometimes messy) details of
state reconstruction from photoelectron measurements as well as
explore the future prospects for this class of metrology.
Since the turn of the century, the increasing availability of
photoelectron imaging experiments, along with the increasing
sophistication of experimental techniques, and the availability of
computational resources for analysis and numerics, has allowed for
significant developments in such photoelectron metrology. Quantum
Metrology with Photoelectrons, Volume 1: Foundations discusses the
fundamental concepts along with recent and emerging applications.
The core physics is that of photoionization, and Volume 1 addresses
this topic. The foundational material is presented in part as a
tutorial with extensive numerical examples and also in part as a
collected reference to the relevant theoretical treatments from the
literature for a range of cases. Topics are discussed with an eye
to developing general quantum metrology schemes, in which full
quantum state reconstruction of the photoelectron wavefunction is
the goal. In many cases, code and/or additional resources are
available online. Consequently, it is hoped that readers at all
levels will find something of interest and that the material
provides something rather different from existing textbooks.
The Transmission Electron Microscope (TEM) is the ultimate tool to
see and measure structures on the nanoscale and to probe their
elemental composition and electronic structure with sub-nanometer
spatial resolution. Recent technological breakthroughs have
revolutionized our understanding of materials via use of the TEM,
and it promises to become a significant tool in understanding
biological and biomolecular systems such as viruses and DNA
molecules. This book is a practical guide for scientists who need
to use the TEM as a tool to answer questions about physical and
chemical phenomena on the nanoscale.
This book describes modern focused ion beam microscopes and
techniques and how they can be used to aid materials metrology and
as tools for the fabrication of devices that in turn are used in
many other aspects of fundamental metrology. Beginning with a
description of the currently available instruments including the
new addition to the field of plasma-based sources, it then gives an
overview of ion solid interactions and how the different types of
instrument can be applied. Chapters then describe how these
machines can be applied to the field of materials science and
device fabrication giving examples of recent and current activity
in both these areas.
Photoemission (also known as photoelectron) spectroscopy refers to
the process in which an electron is removed from a specimen after
the atomic absorption of a photon. The first evidence of this
phenomenon dates back to 1887 but it was not until 1905 that
Einstein offered an explanation of this effect, which is now
referred to as ""the photoelectric effect"".Quantitative Core Level
Photoelectron Spectroscopy: A Primer tackles the pragmatic aspects
of the photoemission process with the aim of introducing the reader
to the concepts and instrumentation that emerge from an
experimental approach. The basic elements implemented for the
technique are discussed and the geometry of the instrumentation is
explained. The book covers each of the features that have been
observed in the X-ray photoemission spectra and provides the tools
necessary for their understanding and correct identification.
Charging effects are covered in the penultimate chapter with the
final chapter bringing closure to the basic uses of the X-ray
photoemission process, as well as guiding the reader through some
of the most popular applications used in current research.
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