Driven Rotation, Self-Generated Flow, and Momentum Transport in Tokamak Plasmas

This book provides a comprehensive look at the state of the art of externally driven and self-generated rotation as well as momentum transport in tokamak plasmas, including recent developments, measurement techniques, and theory. It is a useful reference for researchers and graduate students in the field.

Format: Paperback / softback
Length: 150 pages
Publication date: 15 January 2023
Publisher: Springer Nature Switzerland AG

This comprehensive book delves into the intricate realm of externally driven and self-generated rotation, as well as momentum transport, in tokamak plasmas. In addition to covering recent advancements, it provides a thorough review of rotation measurement techniques, including direct and indirect methods, measurements of rotation, momentum sinks, self-generated flow, and momentum transport. The presented results are juxtaposed with summaries of prevailing theory, offering a holistic perspective that encompasses both experimental and theoretical insights. This book serves as a valuable resource for researchers and graduate students in the field of plasma physics, as it offers a comprehensive exploration of the state-of-the-art knowledge in this dynamic and evolving field. While tokamaks are the primary focus, many of the concepts discussed are also applicable to other plasma configurations.

Introduction:
The study of externally driven and self-generated rotation, as well as momentum transport, in tokamak plasmas is a crucial area of research in plasma physics. Tokamaks are magnetic confinement devices used for generating high-temperature plasmas, which are essential for studying astrophysical phenomena, such as the formation of stars and the behavior of black holes. Understanding the dynamics of rotation and momentum transport in tokamaks is crucial for improving the efficiency and stability of fusion energy production, as well as for developing new plasma technologies for various applications.

Recent Developments:
In recent years, there have been significant developments in the field of externally driven and self-generated rotation in tokamak plasmas. One of the most notable advancements is the use of magnetic fields to control the rotation of the plasma. By applying external magnetic fields, researchers can induce rotation in the plasma, which can be used to study the behavior of the plasma and to optimize the performance of fusion reactors. Another important development is the use of plasma current drive, which involves the injection of electric currents into the plasma to generate a magnetic field that rotates the plasma. This technique is particularly useful for generating large amounts of rotation in the plasma, which can be used to study the behavior of the plasma at high temperatures and pressures.

Rotation Measurement Techniques:
Rotation measurement techniques are essential for studying externally driven and self-generated rotation in tokamak plasmas. There are several methods used to measure rotation, including magnetic field sensors, Faraday rotation measurements, and optical methods. Magnetic field sensors are commonly used to measure the magnetic field strength and direction in the plasma, which can be used to infer the rotation of the plasma. Faraday rotation measurements involve the measurement of the polarization of light emitted by the plasma, which can be used to infer the rotation of the plasma. Optical methods, such as laser Doppler velocimetry, are used to measure the velocity of particles in the plasma, which can be used to infer the rotation of the plasma.

Measurements of Directly and Indirectly Driven Rotation:
Directly driven rotation refers to the rotation of the plasma that is generated by external sources, such as magnetic fields or plasma current drive. Indirectly driven rotation refers to the rotation of the plasma that is generated by the interaction of the plasma with other particles or with the magnetic field. Directly driven rotation is typically easier to control and study than indirectly driven rotation, as it can be generated by external sources that are easily controlled. Indirectly driven rotation, on the other hand, is more complex and difficult to study, as it is generated by the interaction of the plasma with other particles or with the magnetic field.

Momentum Sinks:
Momentum sinks are regions of the plasma where the momentum. Momentum sinks are regions of the plasma where the momentum of particles is absorbed, resulting in a decrease in the overall momentum of the plasma. Momentum sinks can be caused by a variety of factors, including the collision of particles with each other, the interaction of particles with the magnetic field, and the generation of heat by the plasma. Momentum sinks are important for studying the behavior of the plasma and for optimizing the performance of fusion reactors.

Self-Generated Flow:
Self-generated flow is the flow of particles in the plasma that is generated by the interaction of the plasma with itself. Self-generated flow is important for studying the behavior of the plasma and for optimizing the performance of fusion reactors. Self-generated flow can be caused by a variety of factors, including the collision of particles with each other, the interaction of particles with the magnetic field, and the generation of heat by the plasma.

Momentum Transport:
Momentum transport is the process by which momentum transport is the process by which momentum transport is the process by which momentum is transferred from one region of the plasma to another. Momentum transport is important for studying the behavior of the plasma and for optimizing the performance of fusion reactors. Momentum transport can be caused by a variety of factors, including the collision of particles with each other, the interaction of particles with the magnetic field, and the generation of heat by the plasma.

Conclusion:
In conclusion, this comprehensive book provides a thorough exploration of the state-of-the-art knowledge in the field of externally driven and self-generated rotation, as well as momentum transport, in tokamak plasmas. It covers recent developments, rotation measurement techniques, measurements of directly and indirectly driven rotation, momentum sinks, self-generated flow, and momentum transport. The presented results are juxtaposed with summaries of prevailing theory, offering a holistic perspective that encompasses both experimental and theoretical insights. This book serves as a valuable resource for researchers and graduate students in the field of plasma physics, as it offers a comprehensive exploration of the state-of-the-art knowledge in this dynamic and evolving field.

Weight: 261g
Dimension: 235 x 155 (mm)
ISBN-13: 9783030922689
Edition number: 1st ed. 2022