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2 edition of Surface ionization [by] E.Ya. Zandberg and N.I. Ionov. found in the catalog.

Surface ionization [by] E.Ya. Zandberg and N.I. Ionov.

Г‰leonora IAkovlevna Zandberg

Surface ionization [by] E.Ya. Zandberg and N.I. Ionov.

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Published by Israel Program for Scientific Translations in Jerusalem .
Written in English

    Subjects:
  • Ionization

  • Edition Notes

    ContributionsIonov, Nikolaǐ Il"ich,
    Classifications
    LC ClassificationsQC702 Z3413
    The Physical Object
    Pagination355p.
    Number of Pages355
    ID Numbers
    Open LibraryOL18476242M

    On-line computer methods used in conjunction with the measurement of ionization appearance potentials, Adv. Mass Spectrom., , 5, [ all data ] Zandberg and Rasulev, Ionization produced by high‐energy (6–18 MeV) electrons beneath cylindrical surfaces has been measured and compared to ionization at corresponding locations under a flat surface. Results are reported as ionization ratios over a range of depths, off‐axis distances, radii of . The ionization energy is the energy required to remove an electron from its orbital around an atom to a point where it is no longer associated with that atom. The ionization energy of an element increases as one moves across a period in the periodic table because the electrons are held tighter by the higher effective nuclear charge. title = "Surface ionization sources and applications", abstract = "A series of new instruments have been developed for the study of ion emission from hot inorganic deposits, these being; a tube ion source, an ion source imaging instrument, and an ion/ neutral mass spectrometer.

    The /If term is, in general, only important with high-4 cathodes where /I approaches one. Zandberg and Ionov () give a comprehensive review of surface ionization theory and experiment. Auer () and Eichenbaum and Hernqvist () have calculated the potential distribution in a collision-less diode when both electrons and ions are being emitted.


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Surface ionization [by] E.Ya. Zandberg and N.I. Ionov. by Г‰leonora IAkovlevna Zandberg Download PDF EPUB FB2

Zandberg, Eleonora I︠A︡kovlevna. Surface ionization. Jerusalem, Israel Program for Scientific Translations; [available from the U.S. Dept. of Commerce, National Technical Information Service] (OCoLC) Document Type: Book: All Authors / Contributors: Eleonora I︠A︡kovlevna Zandberg; Nikolaĭ Il'ich Ionov.

Reset your password. If you have a user account, you will need to reset your password the next time you login. You will only need to do this once. The surface ionization comparison technique was used to measure the first ionization potentials of the lanthanide elements.

Values obtained were La, ± eV; Ce, ± ; Pr, ± Cited by: É. Zandberg's 64 research works with citations and reads, including: 3. Tungsten. THE formation of negative ions by the surface ionization of gases on hot metallic filaments has been used as a means of determining electron affinities.

In Cited by: Abstract. The surface ionization of triethylamine molecules (M) in accelerating fields of strength F from 210 4 to 410 6 V/cm has been studied under stationary conditions with the aid of mass spectrometry.

The predominant formation of (M-H) + fragment ions has been discovered. The logarithm of the relative intensity of the ion currents at T = const varies linearly with the value of √F.

A surface ionization source was designed and developed to produce useful ion beams of elements with ionization potentials up to about 6 eV by using iridium (work function eV) as the ionizing surface.

Sources were operated successfully producing stable ion beams of aluminum, gallium, indium, and thallium with current densities up to 10 μA/cm l atoms are shielded from the.

Zandberg and U. Rasulev, “Some common features in the mass spectra for the surface ionization of nitrogen-containing organic compounds on tungsten oxide, “Teor. Ékp. Khim., 8, No.

5, – (). Google Scholar. Keywords." Hyperthermal surface ionization; Surface ionization I. Introduction Surface ionization (SI) [1] is the earliest ion- ization method that found extensive use in the ionization and detection of atomic and molecular beams, especially of alkali metal and other atoms having low ionization potential (Iv) [2].

ZANDBERG and N. IONOV Usp. Fiz. N (April, ) INTRODUCTION I N the phenomenon of surface ionization (SI) posi-tive or negative ions are formed on the surface of a body from which atoms or molecules are evaporat-ing.

Positive surface ionization (PSI), which means the production of positive ions, was discovered in. A schematic view of the surface ionization detector and sample in the plane of rotation.

where i+ is the current density from the surface, io is the neutral flux density in current units, e is the unit charge, ~ is the work function of the surface, I is the ionization potential of desorbing atoms, k is the Boltzmann constant, and T is the. Surface Ionization by Zandberg, E.Y.; Etc.

at - ISBN - ISBN - I.P.S.T. - - Hardcover Surface ionization [by] E.Ya. Zandberg and N.I. Ionov. book Book. Create a Want. If you know the book but cannot find it on AbeBooks, we can automatically search. Rasulev and E. Zandberg, Prog. Surf. Sci. 28 N. Ionov; View. Surface ionization of organic compounds in a weak external electric field involving the formation of many-atomic.

The surface ionization of the rare earth elements Gd, Ho, Dy, Pr and Er has been studied for very low electric field (surface and the ionization potentials (I.P.) of these elements have been measured.

The values of ionization potentials are: Gd± eV, Ho± eV, Dy± eV, Pr± eV and Er±0. By N I Ionov and E Ya Zandberg Topics: Nuclear Physics Publisher: Israel Program for Scientific Translations. adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A.

To clarify the thermionic property of solids, the mean work function effective for positive ion from polycrystalline surfaces (ϕ +) is theoretically studied together with that for electron emission (ϕ e).The theoretical values of ϕ + and ϕ e thus evaluated typically with W are in good agreement respectively with those experimental ones accepted today.

Surface ionization and its applications. [Nikolaĭ Ilʹich Ionov] Book: All Authors / Contributors: Nikolaĭ Ilʹich Ionov. Find more information about vii, pages illustrations 22 cm: Series Title: Progress in surface science, v.

1, pt. Responsibility: by N.I. Ionov. Reviews. User. Physics–Uspekhi. Fg Semiconductor surfaces. During and following fracture of a number of materials, the emission of photons, electrons, ± ions, and neutral species are observed; these emissions are collectively known as this work, we present measurements of the neutral particle emission following fracture of two single crystal fcc alkali halides: NaCl and LiF.

Ion-attachment ionization is similar to chemical ionization in which a cation is attached to the analyte molecule in a reactive collision: + + + + + Where M is the analyte molecule, X + is the cation and A is a non-reacting collision partner. In a radioactive ion source, a small piece of radioactive material, for instance 63 Ni or Am, is used to ionize a gas.

We report the first ionization potentials (IP1) of the heavy actinides, fermium (Fm, atomic number Z = ), mendelevium (Md, Z = ), nobelium (No, Z = ), and lawrencium (Lr, Z = ), determined using a method based on a surface ionization process coupled to an online mass separation technique in an atom-at-a-time regime.

The measured IP1 values agree well with those predicted by state. Lawrencium, with atomic numberhas an isotope with a half-life of 27 seconds; even so, its first ionization potential has now been measured on an atom-at-a-time scale and agrees well with. A, Surface Ionization When atoms or molecules are allowed to come into the proximity of the surface of a metal, a certain fraction of these atoms will give up or take an electron from the surface before being re-evaporated and thus become ions.

This process of ionization of. A surface ionization (SI) source was designed and constructed for ion mobility spectrometry (IMS). Compared with a conventional 63Ni source, the surface ionization source is as simple and reliable, has an extended dynamic response range, is more selective in response, and does not have regulatory problems associated with radioactive ionization sources.

Consequently, when an alkali-containing particle impacts on a hot metal surface it is possible for the alkali atoms to ionize and leave the surface as positive ions. This phenomenon is known as surface ionization and occurs when the ionization potential of the atoms is lower than the work function of the surface (Zandberg and Ionov, ).

Surface Ionization Source: Ideal Accelerator Ion Source Basic Principle: Metals with low ionization potential (e.g. alkali) can get ionized when they come in contact with a hot surface: For example Tungsten coated with aluminosilicate compound of a metal: Li 2 O*Al 2 O 3 *2SiO 2, Slide 25 Li Ion source at LBNL for the high density physics.

The closest prior art device is a surface ionization detector for analyzing amine gas mixtures (cf. Zandberg, A. Kamenev, V. Paleev, U. Rasulev: "Visokochuvstvitelny detector aminov i ikh proizvodnikh", Zhurnal Analyticheskoy khimii,Vol No.

6, pp ), which comprises a case with a cylindrical collector. We have computed surface local ionization energies [Ī S (r)] and electrostatic potential minima (V min) for the conjugate bases of a series of cyclic hydrocarbons, using an ab initio self‐consistent field–molecular orbital approach.

Our Ī S (r) and V min results are discussed in relation to the acidities of the parent hydrocarbons. A good correlation exists between experimentally. The mechanism of field emission of positive ions is considered as depending upon the supply of molecules and their ionization probability in a field up to million volts/cm.

Experimental current-field characteristics match the theoretical curves. The velocity distribution, measured in a retarding potential tube, shows that the ions originate some 5 to A above the surface, depending upon.

ESI Source and FT-ICR Mass Spectrometry. All experiments were performed on a Bruker APEX III T FT-ICR mass spectrometer equipped with an external Apollo ESI source (Supplementary Figure S1).The 14 experimental ESI source parameters that can be tuned are: sample flow rate, nebulizer gas (N 2) pressure, end plate voltage, capillary voltage, drying gas (N 2) flow rate, drying gas temperature.

metal surface. • On a solid source filament volatilization and ionization occur on the same surface • This surface is a complex mix of the filament, the element of interest and the matrix in which it was loaded.

• The work function of a typical solid source filament can be highly variable. Surface‐activated chemical ionization‐electrospray ionization mass spectrometry combined with two‐dimensional serial chromatography is a powerful tool for drug stability studies.

Matteo Conti. Corresponding Author. Central Laboratory, Department of Haematology, Oncology, and Laboratory Medicine, Sant'Orsola‐Malpighi Hospital, Bologna. Ionov, N.I. Progress in Surface Science. S G Davison, Pergamon Press: Oxford, UK, ; Volume 1.

[Google Scholar] Zandberg, E.Y. Surface-Ionization Detection of Particles. Tech. Phys.65, 1– [Google Scholar] The Environmental Management office of the City of Gothenburg ([email protected]). Air quality monitoring data from the Femman.

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 and.

Another similar ionization technique is to spray a surface with the ESI spray and have the spray extract ions from the surface into the mass spectrometer. This technique is called desorption electrospray ionization (DESI) and produces spectra similar to electrospray, but is analyzing the sample on a surface.

Comprised of 17 chapters, the book covers topic relevant to ionization potentials, such as properties, concepts, and applications, in order to understand and fully comprehend all aspects of ionization potential. The opening chapter is a review of ionization potentials and a. Chemical ionization (CI) is a soft ionization technique used in mass spectrometry.

This was first introduced by Burnaby Munson and Frank H. Field in This technique is a branch of gaseous ion-molecule chemistry. Reagent gas molecules are ionized by electron ionization, which subsequently react with analyte molecules in the gas phase in order to achieve ionization.

Ionization Energies of s- and p-Block Elements. Ionization energies of the elements in the third row of the periodic table exhibit the same pattern as those of \(Li\) and \(Be\) (Table \(\PageIndex{2}\)): successive ionization energies increase steadily as electrons are removed from the valence orbitals (3s or 3p, in this case), followed by an especially large increase in ionization energy.

Quantity Value Units Method Reference Comment; Δ r H°: ± kJ/mol: D-EA: Wren, Vogelhuber, et al., gas phase; B Δ r H°: ± kJ/mol: G. A mechanism for the formation of the ionic products observed in negative surface ionization thermal electron attachment to SF6 is presented. CONCLUSIONS: Negative surface ionization on a hot filament with mass spectrometry is a relatively simple and effective method for determining electron affinities similar to the electron capture detector.x surface and x charge exchange.

Several excellent books on ion sources exist, but, for the most part, Bern hard Wolf s book Handbook of Ion Sources [1] has been used as the main source of information for this chapter.

Overall, this chapter will give a very basic overview of each source type and the processes that make them work. Read "/jcat" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.