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Tuesday, August 4, 2020 | History

4 edition of Electron impact ionization found in the catalog.

Electron impact ionization

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Published by Springer-Verlag in Wien, New York .
Written in English

    Subjects:
  • Electron impact ionization.

  • Edition Notes

    Includes bibliographies and index.

    Statementedited by T.D. Märk and G.H. Dunn.
    ContributionsMärk, T. D. 1944-, Dunn, G. H. 1932-
    Classifications
    LC ClassificationsQC702.7.E38 E44 1985
    The Physical Object
    Paginationxi, 383 p. :
    Number of Pages383
    ID Numbers
    Open LibraryOL2860795M
    ISBN 100387817786
    LC Control Number84023595

      Electron Ionization. Electron ionization (EI, formerly known as electron impact ionization [1] and electron bombardment ionization [2]) is an ionization method in which energetic electrons interact with solid or gas phase atoms or molecules to produce ions. [3] EI was one of the first ionization techniques developed for mass spectrometry. [4] However, this method is still a popular ionization Our results for positron and electron-impact on Ne, Ar, Kr and Xe, are compared with a detailed compilation of experimental data of multiple and of total ionization cross ://

    Go To: Top, Mass spectrum (electron ionization), References Data from NIST Standard Reference Database NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound ?ID=C&Mask=   In the present investigation, the plane-wave Born approximation was employed to calculate the total ionization cross sections by electron impact of methanol, ethanol and 1-propanol from the threshold of ionization to 10 MeV. This method requires continuum generalized oscillator strengths (CGOSs). The two different semi-phenomenological expressions of CGOS, given by Mayol and Salvat

    Field- and Chemical-Ionization Mass Spectroscopy Last updated; Save as PDF Page ID ; Contributors; As we mentioned in connection with our discussion of mass spectroscopy in Section , one problem with the practical application of mass spectra to structure analysis involving the production of ions by electron impact is that the \(\ce{M^+}\) peak may be very ://:_Basic_Principles_of.   Electron Impact Phenomena and the Properties of Gaseous Ions, Revised Edition deals with data pertaining to electron impact and to molecular gaseous ionic phenomena. This book discusses electron impact phenomena in gases at low pressure that


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Electron impact ionization Download PDF EPUB FB2

It is perhaps surprising that a process which was one of the first to be studied on an atomic scale, and a process which first received attention over seven decades ago, continues to be the object of diverse and intense research efforts.

Such is the case with the (seemingly) conceptually simple and familiar mechanism of electron impact ionization of atoms, molecules, and :// Such is the case with the (seemingly) conceptually simple and familiar mechanism of electron­ impact ionization of atoms, molecules, and ions.

Not only has the multi-body nature of the collision given ground to theoretical effort only grudgingly, but Electron impact ionization book the variety and subtlety of processes contributing to ionization have helped insure that Electron Impact Ionization: Electron impact ionization (ei) is by far the most commonly used ionization method.

The effluent from the GC enters a partially enclosed ion source. Electrons “boiled” from a hot wire or ribbon (filament) are accelerated typically by 70 V (and thus have 70 eV of energy) before entering the ion source through a Genre/Form: Aufsatzsammlung: Additional Physical Format: Online version: Electron impact ionization.

Wien ; New York: Springer-Verlag, © (OCoLC)   Source: PAC,63, (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology).(Recommendations )) on Electron impact inner-shell ionization cross-section (EIICS) calculations of neutral atoms with atomic numbers Z = 6–92 for K-shell, Z = 18–92 for L-shell, and Z = 79–92 for M-shell have been reviewed.

In this work, the evaluations of the EIICS are discussed using our recently propounded easy-to-use models that are found adequately electron ionization (in mass spectrometry) Source: PAC,63, (Recommendations for nomenclature and symbolism for mass spectroscopy (including an Search within book.

Front Matter. Pages i-ix. PDF. Recent Absolute (e,2e) Measurements on Atomic Hydrogen and Helium at Low and Intermediate Energies Triple Differential Cross Sections for Electron Impact Ionization of Argon between 50 eV and eV. Triple Differential Cross Sections for Electron Impact Ionization of Argon between 50 eV    Electron Ionization Figure Schematic representation of an electron ionization source.

There are three indicators of direct current that can be monitored during operation of the ion source as illustrated conceptually in Figure These indicators are: 1. The electrical heating current through the filament, which results in   However, the electron-impact ionization cross sections (Q ion), which are the necessary basic data for the investigation of plasma discharges in these gases, are still unavailable.

This work is devoted to the calculation of Q ion for the above new SF 6 replacements with incident electron energy of up to eV.

We propose a method of combining Electron-impact ionization (α-process), where an electron collides with a neutral particle to create a second free electron and positive ion, is the dominant gaseous ionization mechanism. However, it is reasonable to anticipate that positive ions accelerated by the electric field would also collide with neutral molecules to form a second ion adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A For electron-impact, ionization frommore» In the case of proton-impact electron loss, cross sections (the sum of ionization and single-electron charge transfer) are given.

Well-established analytical formulae used to fit cross sections, published by Wutte et al. and Schweinzer et al. for collisions with lithium atoms, were adapted to :// Comparisons of the electronimpact ionization potential data with photoelectron spectroscopic measurements show that it is possible to measure adiabatic ionization potentials by electron impact in favourable cases and indicates a reason for the consistently high values found by other :// Get this from a library.

Electron impact ionization. [T D Märk; G H Dunn;] -- It is perhaps surprising that a process which was one of the first to be studied on an atomic scale, and a process which first received attention over seven decades ago, continues to be the object of In book: Fundamentals of Plasma Chemistry, Chapter: Electron-Impact Ionization of Si-Organic Compounds, Publisher: Academic Press New York, Editors: M.

Inokuti, K. Becker, pp Cite this   Finally, the electron impact ionization cross sections of C 6 F 12 O were calculated by these methods, and the results are given in this paper.

The calculations in this paper provide a basis for in-depth calculation of parameters, such as ionization coefficient and   Abstract. A study is made of low-energy electron-impact single ionization of ground-state helium. The time-dependent close-coupling method is used to calculate total integral, single differential, double differential, and triple differential ionization cross sections for impact electron energies ranging from 32 to 45 :// Electron Impact Ionization of Hydrogenic Ions in Asymmetric Geometries.

Pages *immediately available upon purchase as print book shipments may be delayed due to the COVID crisis. ebook access is temporary and does not include ownership of the ebook.

Only valid for books with an ebook  › Physics › Atomic, Molecular, Optical & Plasma Physics. Electron-impact single and double ionization of chlorine dioxide, OClO, have been investigated using time-of-flight mass spectrometry and ion–ion coincidence techniques. Relative partial single ionization cross sections of OClO have been determined for incident electron energies from.

Electron-impact ionization cross-sections for single ionization from the ground state of atomic sodium, magnesium, aluminum, and silicon. Formula (1) and the data of Table 1 have been used 0 t with respect to experiments, I tend to place more confidence in the values of Fig.

2 than in the experimental values of sodium in Ref. › 百度文库 › 互联网. The electron impact ionization of guanine in the gas phase leads to the formation of a large number of positive ions. Figure 2 shows an ion mass spectrum of guanine upon electron impact ionization with electrons having a kinetic energy of 60 eV in a mass range of m/z = 1– ://The Binary-Encounter-Bethe (BEB) model for electron-impact total ionization cross sections of neutral molecules has been modified for molecular positive ions.

The total ionization cross sections for H 2 +, N 2 +, CD +, and CO + from the modified BEB formula are compared to available experimental ://