Last edited by Zushura
Friday, May 1, 2020 | History

2 edition of Single and double ionization of argon by electron impacts found in the catalog.

Single and double ionization of argon by electron impacts

Henry Askew Barton

Single and double ionization of argon by electron impacts

  • 113 Want to read
  • 27 Currently reading

Published in [Corning, N.Y .
Written in English

    Subjects:
  • Ionization of gases.,
  • Argon.

  • Edition Notes

    Statementby Henry A. Barton.
    Classifications
    LC ClassificationsQC702 .B4 1925
    The Physical Object
    Pagination1 p. 1., p. [469]-483.
    Number of Pages483
    ID Numbers
    Open LibraryOL6686472M
    LC Control Number26002822
    OCLC/WorldCa15045691

    ISBN: X OCLC Number: Description: pages: illustrations (some color) ; 24 cm. Contents: Identification of double ionization mechanisms, results bearing on electron correlation measurements / M.A. Coplan [and others] --Electron excitation & ionization of Ca at low energy / A. Murray --Role of the ground state in (e,3e) processes on helium / L.U. Ancarani. At first sight, this is surprising since electron repulsion would push the electrons in opposite directions. The great importance of such final state electron repulsion becomes evident in single-photon double ionization, which has been studied in great detail using synchrotron radiation. (See [29] for a recent review and [30] for a comparison. The ionization and excitation cross sections for xenon from threshold to eV from the above references are plotted in Fig. D-1 and tabulated in Table D Ionization and excitation cross sections for other gases such as argon and krypton are available from the following references: [5] M. Hayashi, Bibliography of Electron and Photon Cross File Size: 31KB.


Share this book
You might also like
Skye expedition.

Skye expedition.

The ancient culture of the Fremont River in Utah

The ancient culture of the Fremont River in Utah

Para

Para

Indian philosophy

Indian philosophy

Visual communication through signage

Visual communication through signage

Honoring Mary with the Holy Father

Honoring Mary with the Holy Father

Glimpses on tribal development

Glimpses on tribal development

Materials and processes

Materials and processes

middle English alliterative tradition of the allegorical Chanson dAventure

middle English alliterative tradition of the allegorical Chanson dAventure

Rules for coeducational activities and sports

Rules for coeducational activities and sports

general anti-avoidance rule for direct taxes

general anti-avoidance rule for direct taxes

Socio-religious reforms in Orissa in the 19th century

Socio-religious reforms in Orissa in the 19th century

Timber buildings.

Timber buildings.

Undercover lives

Undercover lives

Single and double ionization of argon by electron impacts by Henry Askew Barton Download PDF EPUB FB2

Electron impact single and double ionization of argon. Electron impact single and double ionization cross-sections for argon have been calculated in the binary encounter approximation (BEA) in the energy regions ranging from respective near thresholds to eV. (4) A more closely bound electron with an ionizing potential of 34 volts may undergo transitions without disturbing the electron whose transitions produce the arc spectrum.

The magnetic deflection method, described in the preceding paper by H. Smyth, has been applied to a study of the ionization of argon, and the minimum potentials for the production of singly and doubly charged ions have been. Abstract. Electron impact single and double ionization cross-sections for argon have been calculated in the binary encounter approximation (BEA) in the energy regions ranging from respective near thresholds to eV.

The accurate expression for σ δE (cross-section for energy transfer δE) including exchange and interference as given by Vriens Cited by: adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A.

Absolute cross sections for electron impact single and multiple ionization of argon ions leading to the formation of Arq+ (q = 2–8) are reported. The animated crossed beam method is applied in the energy range extending from the respective thresholds up to keV. The.

In order to examine the validity of the power law for multiple ionization by electron impact, the probability curves of single and double ionization of Ca are studied in succession to the previous study on Na, K and by: 6. Double-to-single-ionization ratios for electron emission as a function of the angle are measured for, and eV positron and electron impact on argon.

Both the sign of the projectile charge and the impact energy are shown to influence the angular dependences. This paper presents a theoretical study of the single and multiple electron ionization of Argon in several ionization stages at impact energy close to the threshold.

It is intended as a part of a broader study aimed to produce ionization cross sections over a larger energy range, suitable for the computation of rate coefficients (Katsonis et al. Using a different concept, Deutsch et al. [14,15,30] have recently extended the DM formalism [11], which was originally derived for the single ionization of an atom by electron impact, to atomic multiple by: 3.

double ionization is very small, only of the order of 10 -2or less of the corresponding single ionization cross section. The first (e,3e) experiment has been performed 12 years ago by Lahmam-Bennani and co-workers [14] on argon using conventional electron spectroscopy techniques.

The following development of devices, which where able to detect. 1. Phys Rev Lett. Oct 9;63(15) Electron-impact double ionization of argon studied by double and triple coincidence techniques: The first (e,3e) by: electron-impact ionization of helium.

For single ionization, leaving He+ in the 1s ground state, we can compare to pre-vious nonperturbative methods, which freeze one of the K shell electrons [10–12], and to absolute experimental mea-surements [13–15].

For single ionization, leaving He+ in the 2l excited states, we can compare to hybrid. 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 also the variety and subtlety of processes contributing to ionization have helped insure that progress has come only with commensurate work: no pain - no gain.

Measurements of the single and the ratio of double to single ionization cross sections for positron impact on neon, krypton and xenon are presented from near threshold to eV. By multiplying the values of each target by the appropriate, new data for the corresponding double ionization cross sections have also been by: The total cross sections for single ionization of helium and single and double ionization of argon by antiproton impact have been measured in the kinetic energy range from 3 to 25 keV using a new.

Mutiple Ionization of Rare Gases by Electron Impact M. Krauss, R. Reese, and V. Dibeler (Aug ) Electron impact studies of multiple ionization processes in helium, neon, argon, and xenon appear to support theoretical conclusions that the threshold probability for n-foldFile Size: 3MB.

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 30 to eV using time-of-flight mass spectrometry.

Single ionization of atoms by light particle impact has been a topic subjected to wide interest from both the experimental and theoretical side.

The first fully differential cross-sections (FDCS) were measured in [1] and considered the He target and very asymmetric : Sebastian Otranto, Sebastian Otranto, Ronald E. Olson. Single and multiple ionization yields, as a function of projectile energy loss and for forward scattering angles, have been measured for eV positron and eV electron impact on argon.

Energy losses extend between zero and approximately 60% of the initial kinetic energy. For positron impact, the percentage of double ionization is found to increase rapidly for the first 80 eV of energy Author: R.

DuBois, Kh. Khayyat, C. Lloyd, C. Doudna. electron–atom/molecule scattering. Bluhme et al [11] have measured the total ioniza-tion cross-sections of positron impact with Ar and Kr.

Mori and Sueoka [12] measured ionization and excitation cross-sections for helium, neon and argon targets. The single ionization cross-sections of Ar in positron impact were measured by Knudsen et al [13].

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Synopsis Angular dependences for electron emission resulting from single and double ionization of argon are presented for, and eV positron and electron impact.

From these data, double to single ionization ratios are determined as a function of the emission direction. Differential data for single and double ionization of argon by positron and electron impact are presented and compared. For single ionization, coincidences between scattered projectiles, ejected electrons and recoil ions are measured as functions of the projectile scattering angle and energy loss.

Differences associated with the sign of the projectile charge are indicated with regard to the Cited by: 1. Upon a controlled perturbation one measures then the spectrum of a single particle (electron, photon, etc.) emitted from the probe.

The analysis of this single particle spectrum yields a wealth of important information on the properties of the system, such as optical and magnetic behaviour. @article{osti_, title = {Near-threshold electron-impact doubly differential cross sections for the ionization of argon and krypton}, author = {Yates, Brent R and Khakoo, Murtadha A}, abstractNote = {We present normalized doubly differential cross sections (DDCS's) for the near-threshold, electron-impact single ionization of argon and krypton, similar to those taken earlier for Ne and.

In the region of the knee in the double ionization rate, the two-electron process is mediated by electron–electron correlation, whereas at high laser powers, double ionization proceeds by sequential emission of the two electrons. As there may be a random number of optical halfcycles between the emission of the two electrons in this case.

Double ionization is a process of formation of doubly charged ions when laser radiation is exerted on neutral atoms or molecules. Double ionization is usually less probable than single-electron ionization. Two types of double ionization are distinguished: sequential and non-sequential.

Differential data for single and double ionization of argon by positron and electron impact are presented and compared. For single ionization, coincidences between scattered projectiles, ejected electrons and recoil ions are measured as functions of the projectile scattering angle and energy loss.

Electron impact double ionization of helium has been observed in an [e,()e] experiment at an incident electron energy of eV. eV scattered and 10 eV ejected electrons are observed in coincidence without detection of the second ejected electron (1. analyze effective one-electron effects in linearly polar-ized fields, e.g., single ionization, charge resonant enhanced ionization or sequential double ionization, in which the highly nonlinear electron-laser interaction directed along the polarization direction is the main source of the dynamics.

However, it. The origin of differences, of up to 4 eV, between appearance potentials for double ionization by photon and electron impact is discussed.

The ratio of the double- to single-ionization potentials of PAHs was found to be ± for photon impact, significantly lower than for electron-impact and charge-stripping by: The electron beam and spectrometer properties are calibrated using single ionization of atomic argon, which is the major constituent of the target gas jet.

Here a binding energy resolution for the argon 3 p orbital of about 2 eV is by: Atoms and molecules exposed to laser fields that are comparable in intensity to the nuclear fields have extremely high probabilities for double ionization 4,5; this has been attributed to electron.

Introduction. Total cross sections for the ionization and excitation of atoms and molecules by electron impact is one of the essential sets of data needed in a wide range of applications, such as modeling plasmas for plasma processing of semiconductors, designing mercury-free fluorescent lamps, assessing the efficiency of ion gauges, normalizing mass spectrometer output, diagnosing plasmas in.

kinematics differ for positron and electron impact. By performing highly differential measurements of the scattered particle and the ionized electron, the kinematics for single ionization are studied in great detail.

In addition, information about the electron emission and interaction mechanisms is obtained for double ionization.

Argon has a Author: Jared M. Gavin. THE JOURNAL OF CHEMICAL PHYSICS() QED effects in 1s and 2s single and double ionization potentials of the noble gases J. Niskanen,1,a) K. Jank¨ al¨ a,¨ 2,b) M. Huttula,2 and A. Fohlisch¨ 1,3 1Helmholtz Zentrum Berlin fur Materialien und Energie, Institute for Methods and Instrumentation¨ for Synchrotron Radiation Research, Albert-Einstein-St.

15, D Berlin, Germany. [19]. Only one electron was measured for single- and double-ionization events. Using momentum conservation as a criterion, the false electron-ion coincidences for the single ionization of argon resulting from simultaneous ionization of two different atoms in.

"Singly, doubly, and triply differential measurements of single and multiple ionization of Ar by 1 keV positron and electron impact have been measured for projectile energy losses from 0 to eV, scattering angles of 0° to ±5°, and electron emission angles from 45° to °. For single ionization, both projectiles show similar overall energy loss distributions but differ with respect to Author: Jared M.

Gavin. We show that a single photon can ionize the two helium atoms of the helium dimer in a distance up to 10 {\deg}A. The energy sharing among the electrons, the. less than 65% in the total ionization cross section. For in-stance, the cross section for double ionization of helium by electron impact @1# stays below % of the cross section for single ionization from the threshold to 1 keV in incident energy.

Numerous theoretical and experimental results on electron-impact ionization of helium have been. to measure the ‘‘ionization time’’, i.e., the time zero of the electron trajectory.

We found that the ionization time of the first electron in double ionization of argon is in good agreement with the model predictions, whereas the ionization of the second electron occurs.

Fully differential cross sections for the single ionization of helium by ion impact D Fischer, R Moshammer, M Schulz, A Voitkiv, J Ullrich Journal of Physics B: Atomic, Molecular and Optical Physics 36 (17),Ionization or ionisation, is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical resulting electrically charged atom or molecule is called an tion can result from the loss of an electron after collisions with subatomic particles, collisions with other atoms, molecules.Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more.

20 results in SearchWorks catalog Skip to search Skip to .