Spectroscopic analysis of chemical species in carbon plasmas induced by high-power IR CO[subscript 2] laser / J.J. Camacho ... [et al.].

Format:

Book

Contributor:

Camacho, J. J.

Poyato, J. M. L.

Díaz Miranda, L. Elena.

Santos, M.

Series:

Lasers and electro-optics research and technology series

Language:

English

Subjects (All):

Laser plasmas.

Laser-induced breakdown spectroscopy.

Spectrum analysis.

High power lasers.

Physical Description:

1 online resource (95 p.)

Edition:

1st ed.

Place of Publication:

Hauppauge, N.Y. : Nova Science Publishers, Inc., c2011.

Language Note:

English

Summary:

Describes certain fundamentals of laser-induced breakdown spectroscopy (LIBS) and the experimental results obtained from ultraviolet-visible-near infrared (UV-Vis-NIR) spectra induced by laser ablation of a graphite target.

Contents:

Intro

SPECTROSCOPIC ANALYSIS OF CHEMICAL SPECIES IN CARBON PLASMAS INDUCED BY HIGH-POWER IR CO2 LASER

LIBRARY OF CONGRESS CATALOGING-IN-PUBLICATION DATA

CONTENTS

PREFACE

Chapter 1 INTRODUCTION

Chapter 2 FUNDAMENTALS OF LASER INDUCED BREAKDOWN SPECTROSCOPY (LIBS)

2.1. NATURE OF THE PLASMAS

2.2. LOCAL THERMODYNAMIC EQUILIBRIUM (LTE). MODEL FOR THE PLASMA

2.3. LIB PLASMA

2.3.1. Initiation Mechanism: Multiphoton Ionization (MPI) and Electron Impact Ionization (EII)

2.3.2. Electron Attachment, Recombination and Diffusion

2.4. ELEMENTS OF LIBS

2.4.1. Line Radiation

2.4.2. Continuum Radiation

2.4.3. Line Broadening

Determination of Electron Number Density from Stark Broadening of Spectral Lines

Natural Broadening

Doppler Broadening

Pressure Broadening

2.4.4. Determination of Excitation, Vibrational and Rotational Temperatures

2.4.5. Ionization Degree of the Plasmas: Saha Equation

2.5. EFFECTS OF PHYSICAL VARIABLES IN LIBS

2.5.1. Laser Parameters

2.5.2. Focal Properties

2.5.3. Laser Absorption in the Plasma

Chapter 3 EXPERIMENTAL

3.1. PULSED TEA CO2 LASER

3.2. SPECTROGRAPHS AND DETECTORS

3.3. SCHEMATIC DIAGRAM FOR LIBS

3.4. TIMING CONSIDERATIONS

Chapter 4 RESULTS AND DISCUSSION

4.1. IDENTIFICATION OF THE CHEMICAL SPECIES IN THE PULSE LASER ABLATION PLASMA PLUME

4.2. Plasma Excitation, Vibrational and Rotational Temperature Measurements

4.3. IONIZATION DEGREE OF THE PLASMA

4.4. ELECTRON NUMBER DENSITY

4.5. EFFECT OF LASER IRRADIANCE

4.6. EFFECT OF AMBIENT PRESSURE ON THE PLASMA

4.7. SPATIAL CHARACTERIZATION

4.8. TEMPORAL EVOLUTION OF THE PLASMA

Chapter 5 CONCLUSION

ACKNOWLEDGMENTS

REFERENCES

INDEX.

Notes:

Includes index.

Includes bibliographical references and index.

Description based on print version record and CIP data provided by publisher.

ISBN:

1-62808-773-0

OCLC:

852899279