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High Resolution State Selected Ion Molecule Reaction Studies Using Pulsed Field Ionization Photoelectron Secondary Ion Coincidence Method
Download High Resolution State Selected Ion Molecule Reaction Studies Using Pulsed Field Ionization Photoelectron Secondary Ion Coincidence Method full books in PDF, epub, and Kindle. Read online High Resolution State Selected Ion Molecule Reaction Studies Using Pulsed Field Ionization Photoelectron Secondary Ion Coincidence Method ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis High-Resolution State-Selected Ion-Molecule Reaction Studies Using Pulsed Field Ionization Photoelectron-Secondary Ion Coincidence Method by :
Download or read book High-Resolution State-Selected Ion-Molecule Reaction Studies Using Pulsed Field Ionization Photoelectron-Secondary Ion Coincidence Method written by and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed an octopole-quadrupole photoionization apparatus at the Advanced Light Source for absolute integral cross-section measurements of rovibrational-state-selected ion-molecule reactions. This apparatus consists of a high-resolution photoionization ion source, a wired ion gate lens, a dual radio-frequency (rf) octopole ion guide reaction gas cell, and a quadrupole mass spectrometer for reactant and product ion detection. The unique feature of this apparatus is the implementation of the high-resolution pulsed field ionization- photoelectron (PFI-PE)-photoion coincidence (PFI-PEPICO) technique, which has allowed the rotational-state selection of diatomic ions for ion-molecule reaction studies. The novel application of the wired ion gate lens for the rejection of false coincidence background ions is described. This application, along with the differential-ion-gate scheme, has made possible the measurements of rovibrational-state- selected absolute integral reaction cross sections for ion-molecule collisions using the PFI-PE-secondary ion coincidence (PFI-PESICO) method.
Book Synopsis The Study of State-Selected Ion-Molecule Reactions Using the Vacuum Ultraviolet Pulsed Field Ionization-Photoion Technique by :
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.
Book Synopsis State Selected and State-to-State Ion-Molecule Reaction Dynamics, Volume 82, Part 1 by : Cheuk-Yiu Ng
Download or read book State Selected and State-to-State Ion-Molecule Reaction Dynamics, Volume 82, Part 1 written by Cheuk-Yiu Ng and published by John Wiley & Sons. This book was released on 2009-09-09 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: State-Selected and State-to-State Ion-Molecules Reaction Dynamics details the recent experimental and theoretical accomplishments in the field to date by some of its foremost researchers and theorists. Divided into two parts, each of which separately describe the experimental and theoretical aspects of the field, State-Selected and State-to-State Ion-Molecule Reaction Dynamics is an accessible, well organized look at a highly useful and emerging chemical specialty. Part 1, "Experiment," contains eight in-depth studies, which illustrate the key experimental work being done in the field today: Chapter 1 provide a comprehensive review of the theory and application of inhomogeneous rf fields for the study of the dynamics of low-energy ion-molecules processes Chapter 2 describes the application of multiphoton ionization (MPI) for the preparation of reactant ion states Chapter 3 reviews the application of MPI schemes for state specific cross-section measurements involving transition metal cations Chapter 4 describes the development of the threshold photoelectron secondary ion coincidence (TESICO) method Chapter 5 presents the conceptual and practical aspects of a multicoincidence technique Chapter 6 details the experimental results obtained using the photoionization and differential reactivity methods Chapter 7 reviews the several recent crossed beam studies of charge transfer and collision-induced dissociation systems involving atomic and molecular ions Chapter 8 is a survey of 15 years of high resolution crossed beam scattering of protons with atoms, diatoms, and poly-atomic molecules State-Selected and State-to-State Ion-Molecule Reaction Dynamics, Part 1: Experiment offers professionals a true state-of-the-science look at this fascinating and increasingly influential subject.
Download or read book Hüttenwerk Oberhausen AG. written by and published by . This book was released on 1949 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis State-selected Study of Ion-molecule Reaction Dynamics, Photodissociation Dynamics and Free Radical Studies Using Synchrotron Radiation by : Tao Zhang
Download or read book State-selected Study of Ion-molecule Reaction Dynamics, Photodissociation Dynamics and Free Radical Studies Using Synchrotron Radiation written by Tao Zhang and published by . This book was released on 2003 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulse-field Ionization Studies of Ion-molecule Reaction Dynamics and Photodissociation Dynamics Using the Third Generation Synchrotron Radiation by : Xiaonan Tang
Download or read book Pulse-field Ionization Studies of Ion-molecule Reaction Dynamics and Photodissociation Dynamics Using the Third Generation Synchrotron Radiation written by Xiaonan Tang and published by . This book was released on 2007 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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 by : Hong Xu
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.
Book Synopsis Rovibrationally Selected Ion-molecule Reaction Studies Using the Vacuum Ultraviolet Laser Pulsed Field Ionization-photoion and Guided Ion Beam Methods by : Yuntao Xu
Download or read book Rovibrationally Selected Ion-molecule Reaction Studies Using the Vacuum Ultraviolet Laser Pulsed Field Ionization-photoion and Guided Ion Beam Methods written by Yuntao Xu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have successfully performed rovibrationally selected ion-molecule studies with translational energy in the center-of-mass (E(cm)) from thermal to 10 eV by implementing the Vacuum ultraviolet (VUV) laser-based pulsed field ionization-photoion (PFI-PI) experimental technique with the newly developed double quadrupole-double octopole (DQDO) apparatus in our laboratory. A novel electric pulsing sequence has been developed to prepare ions of interests in single rovibrational states with not only with high intensity but also high translational energy resolution. An unprecedented translational energy resolution as low as 0.05 eV in the laboratory frame ([Delta]E(lab)) is achieved that allows us to investigate the effect rotational, vibrational and translational energy on the chemical reactivity of ion-molecule reactions. Using VUV-PFI-PI technique we show that N2+ ions can be selected in v+ vibrational states from v+ = 0-2 and in a particular N+ rotational levels from N+ = 0-9 at ground electronic state. Similarly, the triatomic H2O+ ions can be prepared in the v1+v2+v3+ = 000, 100 and 020 states and the N+(Ka+Kc+) = 000, 111, and 211 states, respectively, for rovibrationally selected ion-molecule reaction studies. Absolute integral cross sections ([delta]), as well as branching ratios, as a function of both internal ro-vibrational and translational energies of ions, are obtained for the ion-molecule reactions of N2+(X2[Sigma](g)+ ; v+ = 0-2; N+ = 0-9) + Ar/CH4 and H2O+(X2B1 ; v1+v2+v3+= 000; N+(Ka+Kc+)) + D2/CO. Many fascinating phenomena about chemical reaction dynamics are observed for the first time. These include vibrational enhancements in the charge-transfer cross sections of N2+(X2[Sigma]g+; v+; N+) + Ar [arrow right] Ar+ + N2, rotational enhancements in the chemical reactivity of H2O+(X2B1; v1+v2+v3+; N+(Ka+Kc+)) + D2 [arrow right]H2DO+ + D, and distinct activation thresholds in the reaction of H2O+(X2B1; v1+v2+v3+; N+(Ka+Kc+)) + CO [arrow right] CO+ + H2O. This kind of data is unique and it provides a database that serves as benchmarks for theoretical calculations and the modeling of related reaction systems.
Book Synopsis State-Selected Ion-Molecule Reaction Dynamics by : R. J. S. Morrison
Download or read book State-Selected Ion-Molecule Reaction Dynamics written by R. J. S. Morrison and published by . This book was released on 1984 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: By analyzing the photoelectron energies in several systems, it has been demonstrated that multiphoton ionization (MPI) can selectively produce molecular ions predominantly in a single vibrational level by the proper choice of the laser wavelength employed. Thus MPI provides a powerful new technique for producing high densities of internally state-selected reagent ion for chemical reaction dynamics studies. This approach is being taken for studying the ion-molecule reactions of NH3(+) (v) which has been prepared with v = 0-9 vibrational quanta in the nu sub 2 umbrella-bending mode.
Book Synopsis Reactivity of Highly Excited Diatomic Ions in Hypersonic Nonequilibrium Flow Conditions by :
Download or read book Reactivity of Highly Excited Diatomic Ions in Hypersonic Nonequilibrium Flow Conditions written by and published by . This book was released on 2002 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this funding cycle, we have constructed and successfully integrated a state-of-the-art guided-ion beam mass spectrometer into the high-resolution photoion-photoelectron apparatus (Endstation 2) of the Chemical Dynamics Beamline at the Advanced Light Source (ALS) for the study of ion-molecule reaction dynamics. Preliminary tests on the performance of this guided-ion beam mass spectrometer have been made, indicating that the ion-molecule reactio photoionization apparatus is performing well. We have also obtained preliminary results on the collision-induced dissociation (CID) and charge transfer (CT) cross sections for the reactions of O2 + (v + = 0-3) + Ar. We have also completed the analysis of the rotationally resolved pulsed field ionization (PFI)-photoelectron (PFI-PE) spectra for the formation of O2+(X2II3/2, 1/2g; v + =0-38), O2+(a4II5/2,3/2,1/2,-1/2u), O2+(A2113/2,1/2u, v+ =0-12), NO+(X'E+, v+ =0-32), and NO+(A'E-, v+ =0-17). The information thus obtained about these states will be needed for ion internal state-selections of O2 + and NO +. A synchrotron-based PFI-photoion (PFI-PI) detection scheme was demonstrated for rovibronic-state selection of 112+. This method is equivalent to the PFI-PE-photoion coincidence (PFI-PEPICO) method and is potentially useful for internal state-selection of reactant ions. In order for this PFI-PI scheme to be applicable to state-selections of heavier ions, such as O2 +, N2 +, and NO +, it is necessary to increase the dark gap of the synchrotron ring period to = 1 us. This can be accomplished by using a slotted chopper wheel to chop the synchrotron beam. Using an electron impact ionization source, we have also examined the CID and CT channels of the O2+(X2113/1,1/2g;v+) + Ar (Ne) reactions.
Book Synopsis Applications of Third Generation Synchrotron Radiation in Vacuum Ultra-violet (VUV) Photoionization Spectroscopy and Dynamics by : Ximei Qian
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:
Book Synopsis Molecular Beams in Physics and Chemistry by : Bretislav Friedrich
Download or read book Molecular Beams in Physics and Chemistry written by Bretislav Friedrich and published by Springer Nature. This book was released on 2021-06-19 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Open Access book gives a comprehensive account of both the history and current achievements of molecular beam research. In 1919, Otto Stern launched the revolutionary molecular beam technique. This technique made it possible to send atoms and molecules with well-defined momentum through vacuum and to measure with high accuracy the deflections they underwent when acted upon by transversal forces. These measurements revealed unforeseen quantum properties of nuclei, atoms, and molecules that became the basis for our current understanding of quantum matter. This volume shows that many key areas of modern physics and chemistry owe their beginnings to the seminal molecular beam work of Otto Stern and his school. Written by internationally recognized experts, the contributions in this volume will help experienced researchers and incoming graduate students alike to keep abreast of current developments in molecular beam research as well as to appreciate the history and evolution of this powerful method and the knowledge it reveals.
Book Synopsis Ion-Molecule Reactions by : J. L. Franklin
Download or read book Ion-Molecule Reactions written by J. L. Franklin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of Volume 2.- 8. Flowing Afterglow Studies.- 1. Introduction.- 2. Studies Bearing on Intermediate Complex Formation in Thermal Energy Collisions.- 2.1. Temperature Dependence of Slow Ion-Molecule Reactions.- 2.2. Three-Body Reaction Rate Constants.- 2.3. Rotational Excitation in Ion-Neutral Reactions.- 2.4. Miscellaneous Considerations of Intermediate Complex Processes.- 3. Studies Bearing on Negative-Ion Resonance Formation.- 4. Studies Bearing on Energetics.- 5. Conclusions.- References.- 9. Ion Cyclotron Resonance Spectrometry.- 1. Introduction.- 1.1. General Characteristics.- 2. Theoretica.
Book Synopsis State-selected and State-to-state Photoionization-photoelectron Spectroscopy Using Two-color Infrared and Vacuum Ultraviolet Lasers by : Peng Wang
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:
Book Synopsis Annual Review of Physical Chemistry by : Print & Online
Download or read book Annual Review of Physical Chemistry written by Print & Online and published by Annual Reviews. This book was released on 2002-06 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 19 papers in this year's collection report on recent research involving the use of physics to explore chemical structures and reactions, particularly those of proteins and polymers. The authors address such diverse areas as gas-phase spectroscopic studies, surface interfacial phenomena, liquid-phase ultrafast laser coherent dynamics, reversible polymerization, and protein folding. The topics include the molecular theory of hydrophobic effects, quantum mechanical methods for enzyme kinetics, the electronic properties of single-walled carbon nanotubes, time-resolved photoelectron angular distributions, and the molecular Hamiltonian. Annotation copyrighted by Book News, Inc., Portland, OR.
Book Synopsis Directory of Graduate Research by : American Chemical Society. Committee on Professional Training
Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 2005 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Book Synopsis Chemical Detection Technologies by : Andrew W. Szumlas
Download or read book Chemical Detection Technologies written by Andrew W. Szumlas and published by . This book was released on 2005 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
