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Optical Generation And Detection Of Acoustic Pulse Profiles In Gases For Novel Ultrasonic Absorption Spectroscopy

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Optical Generation And Detection Of Acoustic Pulse Profiles In Gases For Novel Ultrasonic Absorption Spectroscopy

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Author : A. C. Tam
language : en
Publisher:
Release Date : 1984

Optical Generation And Detection Of Acoustic Pulse Profiles In Gases For Novel Ultrasonic Absorption Spectroscopy written by A. C. Tam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.

We demonstrate a new all-optical, frequency-multiplexed and fast technique for gas-phase ultrasonic absorption spectroscopy. A pulsed laser produces a short-duration acoustic pulse in the gas sample, and the acoustic pulse profiles at two distances are monitored by focused continuous probe beams. Fourier decompositions of these probe deflection signals provide the absorption spectrum, and examples for CO2 + H2O mixture are given Ultrasonic propagation speeds in the MHz regime are also obtained for several gases.

Acoustical Imaging

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Author : Yu Wei
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Acoustical Imaging written by Yu Wei and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

The 105 theses contained in this book are selected from those whose authors were present at the 20th International Symposium on Acoustical Imaging. held at Southeast University. Nanjing. China. during September 12-14. 1992. It was the first time that the symposium had been held in China. Our efforts to host the conference goes back to the 15th International Symposium on Acoustical Imaging held in Halifax. Canada. in 1986. We are glad that the 20th symposium has been successfully held at last. We are ardent for the symposium not only because we attach much importance to the field of acoustical imaging. but also because we admire the tradition of the serious academic exploration and friendly cooperation of the scholars attending the symposium. The theses in this book are from 21 countries and those by Mr. G. Wade. Takuso Sato. J. F. Greenleaf. K. J. Langenberg. and Wencai Yang are the specially invited papers. These theses cover such important fields of acoustical imaging as follows: 1. Mathematics and physics of acoustical imaging; 2. Components and industry application; 3. Applications in medicine and biology; 4. Applications in nondestructive testing; 5. Applications in geophysics; 6. Underwater acoustical imaging. All these theses reflect the latest progress in theory and technology. We are very grateful to all the authors who have provided these theses.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.

Photoacoustic And Photothermal Spectroscopy

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Author : Surya N. Thakur
language : en
Publisher: Elsevier
Release Date : 2022-12-07

Photoacoustic And Photothermal Spectroscopy written by Surya N. Thakur and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-07 with Science categories.

Photoacoustic and Photothermal Spectroscopy: Principles and Applications introduces the basic principles, instrumentation and major developments in the many applications of Photoacoustic and Photothermal Spectroscopy over the last three decades. The book explains the processes of sound generation by periodic optical excitation and ultrasonic generation by pulsed laser excitation and describes the workings of photoacoustic cells equipped with microphones and piezoelectric transducers. Photoacoustic imaging (PAI) is one of the fastest-growing imaging modalities of recent times. It combines the advantages of ultrasound and optical imaging techniques. These non-invasive and non-destructive techniques offer many benefits to users by enabling spectroscopy of opaque and inhomogeneous materials, (solid, liquid, powder, gel, gases) without any sample preparation, and more. Written in a non-mathematical, simple-to-read manner Presents recent developments in the field, along with the scope of future progress, including up-to-date references Includes detailed illustrations, such as equipment layout, spectra, experimental setups, tables, photographs, and more

The Journal Of The Acoustical Society Of Japan E

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Author :
language : en
Publisher:
Release Date : 1992

The Journal Of The Acoustical Society Of Japan E written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Acoustical engineering categories.

Contains English abstracts of original papers and letters to the editor that appear in the Japanese edition.