摘要:

Lasers arrived in 1960, but systematic spectroscopy with lasers had to wait for the discovery of the tunable variety, nearly ten years later. Then came an explosion of activity out of which some representative examples are assembled here. Doppler-free techniques and their application to the fine structure of hydrogen are important instances of ultra-high resolution work using highly-stabilized lasers and of the contributions of laser spectroscopy to fundamental physics. Measurement of thefrequencyof visible light leads inexorably to the fixing of a value for the speed of light and to the declaration that an independent standard of length shall no longer be necessary. The tunable variety of short-pulse laser extends the bounds of quantum-beat spectroscopy, while the combination of ion-detectors with tunable lasers allows the study of very highly excited, bound states and resonant structures above the series limit for atoms in strong magnetic fields. The review concludes with an account of a newly-discovered, Doppler-free effect, not yet fully understood.

ISSN:0010-7514    

DOI:10.1080/00107518408210977

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

Plasmas produced by very high intensity laser light display a variety of interesting phenomena characteristic of the high intensity regime, ranging from anomalously high energy X-rays, electrons and ions to severe density perturbations and the generation of magnetic fields at the megagauss level. The present article begins with a description of the laser technology required to reach the high irradiances of interest and provides a brief outline of the more important diagnostic techniques used in investigating the plasmas. An introduction to plasma waves is given and the linear and nonlinear excitation of waves is discussed. The remainder of the article describes some of the experimental evidence supporting the interpretation of the plasma behaviour at high laser-light intensities in terms of the excitation of plasma waves and the subsequent heating of the plasma by these waves.

ISSN:0010-7514    

DOI:10.1080/00107518408210978

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

Random two-dimensional patterns crop up in a wide variety of scientific contexts. What do they have in common? How can they be classified or analysed? These questions are underlined, and partly answered, by a survey of such patterns, paying particular attention to soap cell networks, metallurgical grain structures and the Giant's Causeway.

ISSN:0010-7514    

DOI:10.1080/00107518408210979

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

Molecular Optical Activity and the Chiral Discriminations.By S. F. Mason. (Cambridge University Press, 1982.) [Pp. viii + 273.] £20·00. Scope: Treatise/Textbook; Level: Specialist post-graduate.

ISSN:0010-7514    

DOI:10.1080/00107518408210980

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0010-7514    

DOI:10.1080/00107518408210981

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor