Download or read book Spectroscopy of Neutrals and Ions by High resolution IR VUV Laser Photoionization and Photoelectron Methods written by Xing, Xi and published by . This book was released on 2007 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frontiers of Molecular Spectroscopy written by Jaan Laane and published by Elsevier. This book was released on 2011-08-11 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of what we know about atoms, molecules, and the nature of matter has been obtained using spectroscopy over the last one hundred years or so. In this book we have collected together twenty chapters by eminent scientists from around the world to describe their work at the cutting edge of molecular spectroscopy. These chapters describe new methodology and applications, instrumental developments, and theory which is taking spectroscopy into new frontiers. The range of topics is broad. Lasers are utilized in much of the research, but their applications range from sub-femtosecond spectroscopy to the study of viruses and also to the investigation of art and archeological artifacts. Three chapters discuss work on biological systems and three others represent laser physics. The recent advances in cavity ringdown spectroscopy (CRDS), surface enhanced Raman spectroscopy (SERS), two-dimensional correlation spectroscopy (2D-COS), and microwave techniques are all covered. Chapters on electronic excited states, molecular dynamics, symmetry applications, and neutron scattering are also included and demonstrate the wide utility of spectroscopic techniques. Provides comprehensive coverage of present spectroscopic investigations Features 20 chapters written by leading researchers in the field Covers the important role of molecular spectroscopy in research concerned with chemistry, physics, and biology
Download or read book Frontiers and Advances in Molecular Spectroscopy written by Jaan Laane and published by Elsevier. This book was released on 2017-11-13 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frontiers and Advances in Molecular Spectroscopy once again brings together the most eminent scientists from around the world to describe their work at the cutting-edge of molecular spectroscopy. Much of what we know about atoms, molecules and the nature of matter has been obtained using spectroscopy over the last one hundred years or so. Going far beyond the topics discussed in Jaan Laane’s earlier book on the subject, these chapters describe new methodologies and applications, instrumental developments and theory, which are taking spectroscopy into still new frontiers. The robust range of topics once again demonstrates the wide utility of spectroscopic techniques. New topics include ultrafast spectroscopy of the transition state, SERS/far-uv spectroscopy, femtosecond coherent anti-Stokes Raman spectroscopy, high-resolution laser induced fluorescence spectroscopy, Raman spectroscopy and biosensors, vibrational optical activity, ultrafast two-dimensional spectroscopy, biology with x-ray lasers, isomerization dynamics and hydrogen bonding, single molecule imaging, spectra of intermediates, matrix isolation spectroscopy and more. Covers spectroscopic investigations on the cutting edge of science Written and edited by leading experts in their respective fields Allows researchers to access a broad range of essential modern spectroscopy content from a single source rather than wading through hundreds of scattered journal articles
Download or read book High resolution Photoelectron and Photoion Spectroscopic Studies of Ammonia Using Two color Infrared vacuum Ultraviolet Laser Systems written by Mi-Kyung Bahng and published by . This book was released on 2005 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Analyzed Threshold Ionization photoion with VUV Laser Pulsed Field Ionization and Guided Ion Beam Method Applied to the Study of State selected Ion molecule Reaction Dynamics written by Hong Xu and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation covers four major chapters. In Chapter 1, a general introduction is given on the research methods of state-selected ion-molecule reaction dynamics including VUV generation, pulse field ionization, guided ion beam method, as well as mass analyzed threshold ionization (MATI). Chapter 2 presents the development of instruments construction for the study of state-selected ion-molecule reaction dynamics. Chapter 3 represents a VUV pulsed field ionization-photoelectron spectroscopic study of pyrazine (C6H4N2). The ionization energy was determined to be 74,906.6 ± 2.0 cm−1 (9.28728 ± 0.00025 eV). The PFI-PE spectrum of pyrazine exhibits well-resolved vibrational bands, which have been well characterized. In Chapter 4 the first rotationally resolved mass-analyzed-threshold (MATI) photoion spectra of N2(X2 [sigma][subscript g], v=0, 1) bands of nitrogen is reported with high resolution using the pulsed field ionization method. The rovibrational spectrum of N2+(X2 [sigma]+[subscript g], v+=0, 1) is analyzed. Absolute rovibrationally selected total cross sections for the charge transfer reaction N2+(X2 [sigma]+[subscript g], v+=0, 1) + Ar are measured.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion and Cluster Ion Spectroscopy and Structure written by J. P. Maier and published by Elsevier Publishing Company. This book was released on 1989 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid and impressive advances have been made in recent years in the spectroscopy and structure of ion and ionic clusters. This new multi-author volume provides an up-to-date and in-depth coverage of the progress made, the present knowledge, and the state-of-the art of the field. The first chapter deals with the developments and application of the Coulomb explosion technique for the determination of the geometric structure of polyatomic cations. This is followed by a review of the structural information obtained by microwave techniques on cations and of their radioastronomical studies. Of the next three chapters, two deal with theoretical approaches to predict spectroscopic data on ions, and the third deals with the experimental measurements using infrared laser methods. The next chapter covers progress in the area of high resolution photodetachment studies on anions using laser-ion beam methods. The techniques and results described in the following chapter are concerned with the investigations of open-shell cations by means of their electronic transitions. The latter chapters focus on the study of ionic clusters and complexes.
Download or read book Photoionization and Photo Induced Processes in Mass Spectrometry written by Ralf Zimmermann and published by John Wiley & Sons. This book was released on 2021-07-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. It places widely used techniques such as MALDI side by side with more specialist approaches such as REMPI and RIMS, and discusses leading edge developments in ultrashort laser pulse desorption, to give readers a complete picture of the state of the technology. 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. Numerous application examples from different analytical fields are described that showcase the power and the wide scope of photo ionization in mass spectrometry. -The first general reference book on photoionization techniques for mass spectrometry -Examines technologies and applications of gas phase resonance-enhanced multiphoton ionization mass spectrometry (REMPI-MS) and gas phase resonance ionization mass spectrometry (RIMS) -Provides complete coverage of popular techniques like MALDI -Discusses the current and potential applications of each technology, focusing on process and environmental analysis Photoionization and Photo-Induced Processes in Mass Spectrometry: Fundamentals and Applications is an excellent book for spectroscopists, analytical chemists, photochemists, physical chemists, and laser specialists.
Download or read book Quantum State Selected Ion Molecule Reaction Dynamics Studies by Vacuum Ultraviolet Laser and Pulsed Field Ionization photoion Method written by Bo Xiong and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum state resolved pulsed field ionization-photoion (PFI-PI) spectra of several small molecules have been obtained, and a few state-selected and kinetic energy selected ion molecule reactions have been studied in detail in this dissertation. Tunable vacuum ultraviolet (VUV) laser is employed, along with a PFI-PI double-quadrupole double-octupole (DQDO) mass spectrometer to conduct these spectroscopic and chemical dynamics studies. Electronic, vibrational, and rotational selected ions are produced by direct photoexcitation with intense, high-resolution VUV laser to high-n Rydberg states, then field ionized by external pulsed electric fields. Pulsed electric field sequences, including their intensity and duration, are adjusted for each unique molecular ion studied to achieve ion beam kinetic energy resolution of as good as 0.05 eV in the lab frame (E[subscript lab]). Kinetic energy dependent integral cross section measurements are measured in the center-of-mass kinetic energy (E[subscript CM]) range of 0.05 – 10.0 eV. Octupole ion guides are used to transmit reactant and product ions from the source to the mass spectrometer with high transmission efficiency. Quadrupole mass spectrometer is used to selectively transmit ions with specific mass to charge ratio. It is demonstrated a wide range of molecular species can be studied in the present VUV-PFI-PI-DQDO apparatus. In this dissertation, N2+, CH4+, O2+, H2+, H2O+, as well as a transition metal ion V+ are investigated spectroscopically and kinetically. Some quantum state resolved photoions are produced for the first time (e.g. rotational selected H2+, electronically and vibrational selected O2+, and spin-orbit state selected V+). Ion-molecule reactions involving these molecular ions are studied and quantum state effects on their reactivity are noticed and discussed. These include the vibrational state and kinetic energy dependence of the product channels and cross sections of reaction N2+(X2[sigma][subscript g], v+=0-2) + C2H2, the rotational enhancement and more complicated vibrational effects of reaction H2O+(X2B1, v1+v2+v3+, N+[subscript Ka+Kc+]) +HD, the distinctive charge transfer cross sections of O2+(a4[pi][subscript u], X2[pi][subscript g], v+)+Ar with reactant ions in two different electronic states while close in total internal energy, and the vibrational and rotational enhancement of proton transfer reaction of H2+(X2[sigma][subscript g]+, v+=1-3, N+=0-3)+Ne. For the CH4/CH4+ system, it is also shown that through studying the unimolecular dissociation dynamics by the PFI-PI method, thermochemistry data, e.g. appearance energy (AE) and bond dissociation energy (D0), can be obtained with unprecedented accuracy.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Study of State Selected Ion Molecule Reactions Using the Vacuum Ultraviolet Pulsed Field Ionization Photoion Technique written by and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the methodology to generate beams of ions in single quantum states for bimolecular ion-molecule reaction dynamics studies using pulsed field ionization (PFI) of atoms or molecules in high-n Rydberg states produced by vacuum ultraviolet (VUV) synchrotron or laser photoexcitation. Employing the pseudocontinuum high-resolution VUV synchrotron radiation at the Advanced Light Source as the photoionization source, PFI photoions (PFI-PIs) in selected rovibrational states have been generated for ion-molecule reaction studies using a fast-ion gate to pass the PFI-PIs at a fixed delay with respect to the detection of the PFI photoelectrons (PFI-PEs). The fast ion gate provided by a novel interleaved comb wire gate lens is the key for achieving the optimal signal-to-noise ratio in state-selected ion-molecule collision studies using the VUV synchrotron based PFI-PE secondary ion coincidence (PFI-PESICO) method. The most recent development of the VUV laser PFI-PI scheme for state-selected ion-molecule collision studies is also described. Absolute integral cross sections for state-selected H+2 ions ranging from v+=0 to 17 in collisions with Ar, Ne, and He at controlled translational energies have been obtained by employing the VUV synchrotron based PFI-PESICO scheme.
Download or read book Field Ionization Mass Spectrometry written by Hans-D. Beckey and published by . This book was released on 1971 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field Ionization Mass Spectrometry focuses on developments in field ionization (FI) mass spectrometry and describes its applications in physical chemistry, with emphasis on mass spectrometric problems. Physico-chemical problems as well as problems of chemical analysis are considered based on issues such as the probability of field ionization; field dissociation and charge distribution; kinetics of ion decomposition in high fields; negative ions; surface diffusion; activation of FI emitters; and elucidation of the structures of organic compounds. This book is comprised of four chapters and beg.
Download or read book Two color Photoionization photoelectron Spectroscopy Using Tunable Vacuum Ultraviolet and Infrared Laser Sources written by Hin-Koon Woo and published by . This book was released on 2004 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Third Generation Synchrotron Radiation in Vacuum Ultra violet VUV Photoionization Spectroscopy and Dynamics written by Ximei Qian and published by . This book was released on 2003 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book State selected and State to state Photoionization photoelectron Spectroscopy Using Two color Infrared and Vacuum Ultraviolet Lasers written by Peng Wang and published by . This book was released on 2005 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photodissociation Studies Using Velocity Ion Imaging Method High level Ab Initio Calculations of Molecular Energetic and Spectroscopic Properties and Benchmarking with Experiments written by Kai-Chung Lau and published by . This book was released on 2004 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of Chemical Physics written by and published by . This book was released on 2003 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
