Spectroscopic Measurement Of H 1s And H Sub 2 V Double Prime J Double Prime In An H Sup Minus Ion Source Plasma

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Spectroscopic Measurement Of H 1s And H Sub 2 V Double Prime J Double Prime In An H Sup Minus Ion Source Plasma by


Original Title: Spectroscopic Measurement Of H 1s And H Sub 2 V Double Prime J Double Prime In An H Sup Minus Ion Source Plasma

Low pressure H2 discharges have been used for some time as sources of H− ions. These discharges contain many different species of particles which interact with each other and with the walls of the discharge chamber. Models exist that predict the populations of the various species for given macroscopic discharge parameters. However, many of the cross sections and wall catalyzation coefficients are unknown or somewhat uncertain. Therefore, it is of interest to measure the populations of as many of these species as possible, in order to determine the validity of the models. These models predict that H− is created predominantly by the two-step process of vibrational excitation of hydrogen molecules followed by dissociative attachment of slow electrons to these vibrationally-excited hydrogen molecules. Many different collisional processes must be included in the models to explain the dependence of the various populations upon macroscopic parameters. This work presents results of spectroscopic measurements of the density and translational temperature of hydrogen atoms and of specific rotationally- and vibrationally-excited states of electronic ground-state H2, in a discharge optimized for H− production, as well as conventional measurements of the various charged species within the plasma. The spectroscopic measurements are performed directly by narrowband, single-photon absorption in the vacuum ultraviolet.

Spectrophysics

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Author: Anne Thorne
Publisher: Springer Science & Business Media
ISBN: 9783540651178
Size: 38.76 MB
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Spectrophysics by Anne Thorne


Original Title: Spectrophysics

Spectrophysics covers those applications of spectroscopy that are directed at investigating the interactions or radiating atoms and molecules with their environment, with particular reference to the fields of astrophysics, plasma physics and atmospheric physics. Much of the material is normally found only in specialized texts.

Internal Reflection And Atr Spectroscopy

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Author: Milan Milosevic
Publisher: John Wiley & Sons
ISBN: 0470278323
Size: 18.71 MB
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Internal Reflection And Atr Spectroscopy by Milan Milosevic


Original Title: Internal Reflection And Atr Spectroscopy

Attenuated Total Reflection (ATR) Spectroscopy is now the most frequently used sampling technique for infrared spectroscopy. This book fully explains the theory and practice of this method. Offers introduction and history of ATR before discussing theoretical aspects Includes informative illustrations and theoretical calculations Discusses many advanced aspects of ATR, such as depth profiling or orientation studies, and particular features of reflectance

Applied Spectroscopy

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Author: Jerry Workman, Jr.
Publisher: Academic Press
ISBN: 9780080527499
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Applied Spectroscopy by Jerry Workman, Jr.


Original Title: Applied Spectroscopy

This book delineates practical, tested, general methods for ultraviolet, visible, and infrared spectrometry in clear language for novice users, and serves as a reference resource for advanced spectroscopists. Applied Spectroscopy includes important information and equations which will be referred to regularly. The book emphasizes reflectance and color measurements due to their common usage in todays spectroscopic laboratories, and contains methods for selectinga measurement technique as well as solar and color measurements. Written by experts in the field, this text covers spectrometry of new materials, ceramics, and textiles, and provides an appendix of practical reference data for spectrometry. Book topics include: Practical aspects of spectrometers and spectrometry; Sample preparation; Chemometrics and calibration practices; Reflectance measurements; Standard materials measurements An emphasis is placed on reflectance and color measurements due to their common usage in today's spectroscopic laboratories Methods for selecting a measurement technique are included as well as solar measurements and reference information on sources, detectors, optical fiber and window materials

Vacuum Ultraviolet Spectroscopic Measurement Of Continuum And Line Radiation From An Argon Plasma Generated In A Free Burning Arc

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Author: Dilip N. Ghosh Roy
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Vacuum Ultraviolet Spectroscopic Measurement Of Continuum And Line Radiation From An Argon Plasma Generated In A Free Burning Arc by Dilip N. Ghosh Roy


Original Title: Vacuum Ultraviolet Spectroscopic Measurement Of Continuum And Line Radiation From An Argon Plasma Generated In A Free Burning Arc


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