Martin Dohlus's Books

Ultraviolet and Soft X-Ray Free-Electron Lasers

Introduction to Physical Principles, Experimental Results, Technological Challenges

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach

Write a review Read reviews Take a Quiz Solve Book Puzzle

Ultraviolet and Soft X-Ray Free-Electron Lasers

Introduction to Physical Principles, Experimental Results, Technological Challenges

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach

The high scienti?c interest in coherent X-ray light sources has stimulated world-wide e?orts in developing X-ray lasers. In this book a particularly promising approach is described, the free-electron laser (FEL), which is p- sued worldwide and holds the promise to deliver ultra-bright X-ray pulses of femtosecond duration. Other types of X-ray lasers are not discussed nor do we try a comparison of the relative virtues and drawbacks of di?erent concepts. The book has an introductory character and is written in the style of a universitytextbookforthemanynewcomerstothe?eldoffree-electronlasers, graduate students as well as accelerator physicists, engineers and technicians; it is not intended to be a scienti?c monograph for the experts in the ?eld. Building on lectures by one of us (J. R.) at the CERN Accelerator School, and motivated by the positive response to a series of seminars on “FEL t- ory for pedestrians”, given by P. S. within the framework of the Academic Training Program at DESY, we have aimed at presenting the theory of the low-gainandthehigh-gainFELinaclearandconcisemathematicallanguage. Particular emphasis is put on explaining and justifying the assumptions and approximations that are needed to obtain the di?erential equations descr- ing the FEL dynamics. Although we have tried our best to be “simple”, the mathematical derivations are certainly not always as simple as one would like them to be. However, we are not aware of any easier approach to the FEL theory. Some of the more involved calculations are put into the appendices.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

215

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3540795715

ISBN 13

9783540795711

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Physical Principles, Experimental Results, Technical Realization

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach,Christopher Behrens

Write a review Read reviews Take a Quiz Solve Book Puzzle

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Physical Principles, Experimental Results, Technical Realization

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach,Christopher Behrens

The main goal of the book is to provide a systematic and didactic approach to the physics and technology of free-electron lasers. Numerous figures are used for illustrating the underlying ideas and concepts and links to other fields of physics are provided. After an introduction to undulator radiation and the low-gain FEL, the one-dimensional theory of the high-gain FEL is developed in a systematic way. Particular emphasis is put on explaining and justifying the various assumptions and approximations that are needed to obtain the differential and integral equations governing the FEL dynamics. Analytical and numerical solutions are presented and important FEL parameters are defined, such as gain length, FEL bandwidth and saturation power. One of the most important features of a high-gain FEL, the formation of microbunches, is studied at length. The increase of gain length due to beam energy spread, space charge forces, and three-dimensional effects such as betatron oscillations and optical diffraction is analyzed. The mechanism of Self-Amplified Spontaneous Emission is described theoretically and illustrated with numerous experimental results. Various methods of FEL seeding by coherent external radiation are introduced, together with experimental results. The world’s first soft X-ray FEL, the user facility FLASH at DESY, is described in some detail to give an impression of the complexity of such an accelerator-based light source. The last chapter is devoted to the new hard X-ray FELs which generate extremely intense radiation in the Angstrøm regime. The appendices contain supplementary material and more involved calculations.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

240

Publisher

Springer

Published Date

ISBN 10

3319040812

ISBN 13

9783319040813

Leadership and Succession in the Soviet Union, Eastern Europe, and China

By: Martin McCauley,Stephen Carter

Write a review Read reviews Take a Quiz Solve Book Puzzle

Leadership and Succession in the Soviet Union, Eastern Europe, and China

By: Martin McCauley,Stephen Carter

First Published in 1986. The papers in this volume were originally delivered at a series of seminars held at the School of Slavonic and East European Studies, University of London, between January and May 1984. The inspiration for the scheme was the Soviet succession struggle of 1982 but further reflection indicated that the problem of elderly leaderships, and the apparent absence of legitimate succession mechanisms, applied to nearly all communist systems.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

248

Publisher

Routledge

Published Date

ISBN 10

1315494876

ISBN 13

9781315494876

Dictatorship and Information

Authoritarian Regime Resilience in Communist Europe and China

By: Martin K. Dimitrov

Write a review Read reviews Take a Quiz Solve Book Puzzle

Dictatorship and Information

Authoritarian Regime Resilience in Communist Europe and China

By: Martin K. Dimitrov

Fear pervades dictatorial regimes. Citizens fear leaders, the regime's agents fear superiors, and leaders fear the masses. The ubiquity of fear in such regimes gives rise to the "dictator's dilemma," where autocrats do not know the level of opposition they face and cannot effectivelyneutralize domestic threats to their rule. The dilemma has led scholars to believe that autocracies are likely to be short-lived.Yet, some autocracies have found ways to mitigate the dictator's dilemma. As Martin K. Dimitrov shows in Dictatorship and Information, substantial variability exists in the survival of nondemocratic regimes, with single-party polities having the longest average duration. Offering a systematic theoryof the institutional solutions to the dictator's dilemma, Dimitrov argues that single-party autocracies have fostered channels that allow for the confidential vertical transmission of information, while also solving the problems associated with distorted information.To explain how this all works, Dimitrov focuses on communist regimes, which have the longest average lifespan among single-party autocracies and have developed the most sophisticated information-gathering institutions. Communist regimes face a variety of threats, but the main one is the masses.Dimitrov therefore examines the origins, evolution, and internal logic of the information-collection ecosystem established by communist states to monitor popular dissent. Drawing from a rich base of evidence across multiple communist regimes and nearly 100 interviews, Dimitrov reshapes ourunderstanding of how autocrats learn--or fail to learn--about the societies they rule, and how they maintain--or lose--power.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

497

Publisher

Oxford University Press

Published Date

ISBN 10

0197672922

ISBN 13

9780197672921

The German Democratic Republic since 1945

By: Martin McCauley

Write a review Read reviews Take a Quiz Solve Book Puzzle

The German Democratic Republic since 1945

By: Martin McCauley

The GDR is the most successful (in terms of living standards) socialist state but one of the least loved. Yet the GDR has formidable achievements to list, especially in education and health. On the other hand her feeling of insecurity has led to a creeping militarisation of society. The GDR provides communist states in the Third World with military training and expertise; she also trains security and police cadres. Hence the impact is being felt outside Europe. Does the GDR now present the face of the ugly German to the non-communist world? Her development is worthy of attention. As the Soviet Union's closest ally in Eastern Europe she may play a more important role there in the future as economic growth slows and tensions rise. She has, however, problems of her own which will require much hard work to resolve. Nevertheless she is the most stable socialist state in Eastern Europe at present. Will this continue? Will mass discontent mount as living standards stagnate? Just how important will the West German response be? The GDR is torn between East and West. If she is to weather the economic storms she requires closer links with West Germany and the West but politically and militarily she needs a closer relationship with the Soviet Union. '... competent and wide-ranging, covering not only political history but also the economy, education, culture, the position of women and foreign policy.' Leslie Holmes, Soviet Studies '... the main strength of this work is that it provides a mass of facts and figures in the main text and is yet eminently readable.' Roger Woods, Slavonic Review

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

295

Publisher

Springer

Published Date

ISBN 10

1349184039

ISBN 13

9781349184033

Ultraviolet and Soft X-Ray Free-Electron Lasers

Introduction to Physical Principles, Experimental Results, Technological Challenges

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach

Write a review Read reviews Take a Quiz Solve Book Puzzle

Ultraviolet and Soft X-Ray Free-Electron Lasers

Introduction to Physical Principles, Experimental Results, Technological Challenges

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

215

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3540795715

ISBN 13

9783540795711

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Physical Principles, Experimental Results, Technical Realization

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach,Christopher Behrens

Write a review Read reviews Take a Quiz Solve Book Puzzle

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Physical Principles, Experimental Results, Technical Realization

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach,Christopher Behrens

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

240

Publisher

Springer

Published Date

ISBN 10

3319040812

ISBN 13

9783319040813

Ultraviolet and Soft X-Ray Free-Electron Lasers

Introduction to Physical Principles, Experimental Results, Technological Challenges

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach

Write a review Read reviews Take a Quiz Solve Book Puzzle

Ultraviolet and Soft X-Ray Free-Electron Lasers

Introduction to Physical Principles, Experimental Results, Technological Challenges

By: Peter Schmüser,Martin Dohlus,Jörg Rossbach

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

207

Publisher

Springer

Published Date

ISBN 10

3540872558

ISBN 13

9783540872559

Book's by Martin Dohlus

Ultraviolet and Soft X-Ray Free-Electron Lasers

Ultraviolet and Soft X-Ray Free-Electron Lasers

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Leadership and Succession in the Soviet Union, Eastern Europe, and China

Leadership and Succession in the Soviet Union, Eastern Europe, and China

Dictatorship and Information

Dictatorship and Information

The German Democratic Republic since 1945

The German Democratic Republic since 1945

Ultraviolet and Soft X-Ray Free-Electron Lasers

Ultraviolet and Soft X-Ray Free-Electron Lasers

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Free-Electron Lasers in the Ultraviolet and X-Ray Regime

Ultraviolet and Soft X-Ray Free-Electron Lasers

Ultraviolet and Soft X-Ray Free-Electron Lasers

Username

Password

Username

Password

Password again

Birthday

Email