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Laser photoionization and desorption surface analysis techniques

18-19 January 1990, Los Angeles, California
  • 176 Pages
  • 2.80 MB
  • 7086 Downloads
  • English

SPIE , Bellingham, Wash., USA
Lasers -- Congresses, Electron-stimulated desorption -- Congr
StatementNicolas S. Nogar, chair/editor ; sponsored by SPIE--the International Society for Optical Engineering.
GenreCongresses.
SeriesSPIE proceedings series -- v. 1208., Proceedings of SPIE--the International Society for Optical Engineering -- v. 1208.
ContributionsNogar, Nicolas S., Society of Photo-optical Instrumentation Engineers., Symposium on High-Power Lasers and Optical Computing (1990 : Los Angeles, Calif.)
The Physical Object
Paginationvii, 176 p. :
ID Numbers
Open LibraryOL19567329M
ISBN 100819402494
ISBN 139780819402493
LC Control Number90060147
OCLC/WorldCa22188427

Get this from a library. Laser photoionization and desorption surface analysis techniques: JanuaryLos Angeles, California. [Nicolas S Nogar; Society of Photo-optical Instrumentation Engineers.; SPIE Digital Library.;]. Laser Photoionization Spectroscopy discusses the features and the development of photoionization technique.

This book explores the progress in the application of lasers, which improve the characteristics of spectroscopic methods. Organized into 12 chapters, this book starts with an overview of the fundamentals of the method for atoms and molecules. COMPARING TOF-SIMS WITH LASER DESORPTION/ PHOTOIONIZATION FOR SURFACE ANALYSIS Jennifer L.

Trevor, Luke Hanley, Michael J. Pellin,l and Keith R. Lykkel lMaterials Science and Chemistry Divisions, Argonne National Laboratory, Argonne, IL 2University of Illinois at Chicago, Chicago, IL submitted for publication in theAuthor: J.L.

Trevor, L. | Hanley, M.J. Pellin, K.R. Lykke. Purchase Laser Photoionization Spectroscopy - 1st Edition. Print Book & E-Book.

ISBNBook Edition: 1. Photoionization and Photo-Induced Processes in Mass Spectrometry: Fundamentals and Applications starts with a complete overview of the fundamentals of the technique, covering the basics of the gas phase ionization as well as those of laser desorption and ablation, pulse photoionization, and single particle ionization.

Laser desorption photoionization mass spectrometry (LDPI-MS) utilizes two separate light sources for desorption and photoionization of species from a solid surface. This technique has been applied to study a wide variety of molecular analytes in biological systems, but is not yet available in commercial instruments.

Purchase Laser Ablation and Desorption, Volume 30 - 1st Edition. Print Book & E-Book. ISBNThis thesis describes work associated with the creation of a novel analytical instrument, a two-laser ion trap mass spectrometer. This device combines one of the most sensitive and selective direct solid sampling techniques, two-laser solid sampling, with a very versatile mass spectrometer, the ion trap.

This work demonstrates some of the potential advantages associated with coupling these two. Atomic and molecular analysis via direct laser desorption/ionization using near-infrared ultrashort pulses is described.

Download Laser photoionization and desorption surface analysis techniques EPUB

Finally, the postionization of clusters, the role of gaseous collisions, sampling at ambient pressure, atmospheric pressure photoionization, and the addition of UV postionization to MALDI are considered.

DAPPI-HRMS Desorption atmospheric pressure photoionization (DAPPI) [] is a different ambient ionization method that allows the surface analysis of neutral and non-polar compounds, opening up.

Provides comprehensive coverage of laser-induced ionization processes for mass spectrometry analysis Drawing on the expertise of the leading academic and industrial research groups involved in the development of photoionization methods for mass spectrometry, this reference for analytical scientists covers both the theory and current applications of photo-induced ionization processes.

Surface-assisted laser desorption/ionization (SALDI) is a soft laser desorption technique used for mass spectrometry analysis of biomolecules, polymers, and small organic molecules. In its first embodiment Koichi Tanaka used a cobalt/glycerol liquid matrix and subsequent applications included a graphite/glycerol liquid matrix as well as a solid surface of porous silicon.

Lasers with pulse lengths from nanoseconds to femtoseconds and wavelengths from the mid-infrared to extreme ultraviolet (UV) have been used for desorption or ablation in mass spectrometry. Such laser sampling can often benefit from the addition of a second laser for postionization of neutrals.

The advantages offered by laser postionization include the ability to forego matrix application, high. Surface-assisted laser desorption ionization mass spectrometry techniques for application in forensics. Guinan T(1), Kirkbride P(2), Pigou PE(2), Ronci M(1), Kobus H(2), Voelcker NH(1).

Author information: (1)Mawson Institute, University of South Australia, Mawson Lakes, South Australia,Australia.

Desorption atmospheric pressure photoionization and direct analysis in real time coupled with travelling wave ion mobility mass spectrometry Riikka-Marjaana Räsänen1,2, Prabha Dwivedi2,3,4†, Facundo M.

Fernández2,3*and Tiina J. Kauppila1** 1Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Book Search tips Selecting this option will search all publications across the Scitation platform Flat surface study of the Eley–Rideal dynamics of recombinative desorption of hydrogen on a metal surface J.

Chem.

Details Laser photoionization and desorption surface analysis techniques PDF

Phys. in Laser Photoionization and Desorption Surface Analysis Techniques, edited by N. Nogar [SPIE Laser induced molecular desorption which is mediated by optically generated substrate carriers is considered.

State-specific diagnostics are combined with desorption-laser wavelength dependence studies to clarify the excitation and desorption dynamics involved. Chromium detection by laser desorption and resonance ionization mass spectrometry.

Analytical Chemistry64 (5), DOI: /aca Robert W. Shaw, J. Young, and D. Smith. Removal of the samarium isobaric interference from promethium mass analysis.

While elemental analysis of surfaces has progressed dramatically over the past ten years, quantitative molecular surface analysis remains difficult.

This is particularly true in the analysis of complex materials such as polymers and rubbers which contain a wide compliment of additives and pigments to enhance their material characteristics. For mass spectrometric analysis the difficulty is two.

This paper examines the analytical capabilities and applications of Laser Ablation Microprobe Mass Spectrometry (LAMMS). The technique and instrumentation will be described along with the application of LAMMS to investigate dopant lateral diffusion problems in insulating and noninsulating materials.

Laser induced molecular desorption which is mediated by optically generated substrate carriers is considered. State-specific diagnostics are combined with desorption-laser wavelength dependence studies to clarify the excitation and desorption dynamics involved.

Results from NO desorption from both metallic and semiconductor substrates are presented, along with theoretical models of the. Another early desorption technique is that of plasma desorption mass spectrometry (PDMS).

The sample is deposited onto a thin aluminum or aluminized polyester foil (–1 μm in thickness) and placed just in front of a californium emitter which is located in a time-of-flight (TOF) mass spectrometer (Figure 7).Californium is an α-emitter that decays into two highly energetic α-particles.

As a consequence, alternative surface analysis techniques that focus on and laser ablation/desorption photoionization This book chapter focuses only on. Laser Ablation provides a broad picture of the current understanding of laser ablation and its many applications, from the views of key contributors to the field.

Discussed are in detail the electronic processes in laser ablation of semiconductors and insulators, the post-ionization of laser-desorbed biomolecules, Fourier-transform mass spectroscopy, the interaction of laser radiation with.

The dynamics of a direct reaction between a gas phase H atom and an adsorbed H atom, often referred to as an Eley–Rideal mechanism, is explored using a fully three‐dimensional flat surface model for Cu(). The model is based on a flat‐surface approximation for a single electronically adiabatic potential energy surface (PES).

This reduces the inherently six‐dimensional reactive. Direct and rapid analysis of cholesterol was accomplished in the ambient environment using reactive desorption electrospray ionization (DESI) mass spectrometry.

This was achieved by electrospraying reagent solutions in the form of high velocity charged droplets at surfaces such as dried serum samples and animal tissue sections.

Description Laser photoionization and desorption surface analysis techniques FB2

Betaine aldehyde, incorporated into the spray solvent, reacts. mass spectrometry or laser desorption electron impact. Techniques that rely on different ionization mechanisms, e.g., chemical ionization (desorption atmospheric pressure chemical ionization, DAPCI),9 metastables in plasma (direct analysis in real time, DART),10 and photoionization (desorption atmo.

Analysis of the influence of laser power density and laser pulse delay time indicates a reduction of fragmentation in both the sputtering phase and the photoionization phase.

This study demonstrates the importance of soft desorption for efficient laser postionization of large organic molecules and shows the potential for improving the.

The 10 Hz data acquisition rate was determined by the repetition rate of the Nd:YAG laser used to generate eV VUV radiation.

Data was collected continuously while the desorption laser scanned over the sample surface at a speed of mm/s. All of. Redefines laser ionization's place in analytical chemistry along with the discovery of several new techniques and their promising applications including laser-solid interaction which is used in diamond synthesis, high temperature superconductor preparation, desorption of large biomolecules and sampling of solids for chemical analysis.

This completely updated and revised second edition of Surface Analysis: The Principal Techniques, deals with the characterisation and understanding of the outer layers of substrates, how they react, look and function which are all of interest to surface scientists.

Within this comprehensive text, experts in each analysis area introduce the theory and practice of the principal techniques that.preparation, and the analysis of a sample is rapid, requiring only minutes. A complete mass spectrum is obtained for each desorp-tion shot, which permits spatially resolved mapping of a sample surface by scanning the location of the laser desorption spot.5 Detection .Overview of ion spectroscopies for surface compositional analysis / A.W.

Czanderna --Surface structure and reaction studies by ion-solid collisions / Nicholas Winograd and Barbara J. Garrison --Particle-induced desorption ionization techniques for organic mass spectrometry / Kenneth L. Busch --Laser resonant and nonresonant photoionization of.