2 edition of Electron and ion emission from solids [by] R.O. Jenkins [and] W.G. Trodden. found in the catalog.
Electron and ion emission from solids [by] R.O. Jenkins [and] W.G. Trodden.
Ronald Osmond Jenkins
|Contributions||Trodden, W. G,|
|LC Classifications||QC721 J33|
|The Physical Object|
|Number of Pages||84|
Ion-Electron Method (Half Reaction Method) Jette and LaMev developed the method for balancing redox-reactions by ion electron method in It involves the following steps (i) Write down the redox reaction in ionic form. (ii) Split the redox reaction into two half reactions, one for oxidation and other for reduction. The theory of cold field emission of electrons is discussed in many textbooks and monographs, including the monograph by Robert Gomer, Field Emission and Field Ionization (Cambridge, Mass., Harvard University Press, ), chapter 1, pp. , and the monograph by R. O. Jenkins and W. G. Trodden, Electron and Ion Emission From Solids (New York. Proton Emission. Proton emission is one process that unstable atoms can use to become more stable. During proton emission, a proton is ejected from an atom's nucleus.. Since an atom loses a proton during proton emission, it changes from one element to another. -the energy of a free electron is arbitrarily assigned a value of zero-This corresponds to setting n equal to infinity E∞=0. As the electron gets closer to the nucleus (n decreases), En becomes a larger in absolute value, but also more negative-The most negative value, then, is reached when n=1, which corresponds to the most stable energy state.
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Get this from a library. Electron and ion emission from solids. [R O Jenkins; W G Trodden]. Additional Physical Format: Online version: Jenkins, R.O. (Ronald Osmond). Electron and ion emission from solids. New York: Dover Publications, © Proton-induced secondary electron emission from elemental solids over the energy domain 1 keV– MeV.
and Jenkins and Trodden. Extensive reviews on SEE from solids can be found in Refs. W.G. TroddenElectron and Ion Emission from Solids. Dover, New York (), p.
Cited by: 1. JENKINS's 13 research works with 56 citations and reads, including: Evaporation of thorium from carburized thoriated tungsten cathodes. Certain solids emit electrons from their surfaces when subjected to heat (thermionic emission), electromagnetic radiation (photoemission) and/or an electric field (field emission).
Much of electronics, including vacuum tubes, cathode-ray tubes in their various manifestations, and electron microscopes, depend on the emission of electrons from metals and the manipulation. Measurements made on sputtered thin‐film gold‐metaloxide cermets indicate that the secondary electron emission yield is quite similar to that of the dielectric.
For Au–Ta 2 O 5 films, the first crossover potential is ≃ 30 V, and the maximum yield of is achieved at V. These values are essentially independent of the Au/Ta 2 O 5 ratio.
Results are also presented. The transition from laminar to turbulent behavior of the electron sheath in a cross‐field gap is examined for the regime B≳B H, where B is the external magnetic field and B H is the Hull cutoff value.
An analytic expression is presented for the critical emitted current beyond which laminar solutions cease to exist. A one‐dimensional particle code is used to corroborate the analytic. material for which th~ sec6ndary electron ratio was a sensi tive function of the particle energy, thus offering a means of measurement of the primary particle energy.
Also, the data might assist theo~ists by supplementing the limited amount of data now available onsecondary electron emission due to positive ion bombardment. Secondary emission takes place when a material is bombarded by electrons, ions or photons.
In our case we are only interested in the effect of bombard- ment by electrons. The secondary electron emission yield S is defined as: Hilips Jounulof Re4enreh Vol. SO No. 19% Field electron emission, also known as field emission (FE) and electron field emission, is emission of electrons induced by an electrostatic most common context is field emission from a solid surface into a r, field emission can take place from solid or liquid surfaces, into a vacuum, a fluid (e.g.
air), or any non-conducting or weakly conducting. The theory of cold field emission of electrons from metals is discussed in many textbooks and monographs, including the monograph by R. Jenkins and W. Trodden, "Electron and Ion Emission From Solids" (Dover Publications, Inc., New York, N.Y., ), Chapter 4.
NOTATIONS AND NOMENCLATURE. Jenkins R O and Trodden W G Electron and Ion Emission from Solids (London: Routledge and Kegan Paul) p Export references: BibTeX RIS.
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Chow et al.  have analyzed secondary electron emission from a cylindrical grain on account of the incidence of a high energy beam of (primary) Electron and ion emission from solids [by] R.O.
Jenkins [and] W.G. Trodden. book, propagating in a direction parallel to the axis of the restriction puts a severe limitation on the application of this model to complex plasma kinetics. The phenomenon of secondary electron emission from the surface. Secondary-electron-emission processes under electron bombardment play an important role in the performance of a variety of electron devices.
While in some devices, the anode and the grid require materials that suppress the secondary-electron-generation process, the crossed-field amplifier (CFA) is an example where the cathode requires an efficient secondary-electron-emission. Jenkins R O and Trodden W G Electron and Ion Emission from Solids (London: Routledge and Kegan Paul) p Google Scholar.
Export references: BibTeX RIS. Back to top. //10/2/ Related content. bright jobs. IOP Teacher Training Scholarships: Institute of Physics. w14x R.O. Jenkins, W.G. Trodden, Electron and Ion Emission, Dover, New York,p.
W.G. Trodden, Electron and Ion Emission, Dover, New York,p. We describe a. The chemisorption of toluene, m-xylene, mesitylene, n-butylbenzene, t-butylbenzene, aniline, nitrobenzene and cyanobenzene were studied on the () and () crystal faces of platinum at low pressures (10 −9 to 10 −7 torr) and at temperatures of 20 to °C by low energy electron diffraction and work function change measurements.
After. Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher Physics and Applications of Secondary Electron Emission (McGraw-Hill, New York, ).
Jenkins and W. Trodden, Electron and Ion Emission (Dover, New York, In this paper the results are presented of investigations into the effect of technological parameters of r.f. sputtering, such as the pressure in the. Ion cyclotron resonance spectroscopy is used to investigate endothermic reactions of UF − temperatures below those required for electron emission, UF − 6 is formed by negative surface ionization on a directly heated rhenium filament.
The reactant ion is accelerated to a known energy and traverses the source region of the ICR cell in the direction. The theory of cold cathode field emission of electrons from metals has been discussed in many textbooks and research papers, including those by R.
Jenkins (R. Jenk ins) and WJ Troden (W. Trodden, Chapter 4, Electron and Ion Emission From Solids (Dover Publishing, New York, NY, ). R O Jenkins; W G Trodden; W.G.
Trodden, Electron and Ion Emission, Dover, New York,p. polycrystalline diamond film resistors has been initiated using modified thick film. 17) Solid matter is mostly empty space. The reason solids don't fall through one another is because A) atoms are constantly vibrating, even at absolute zero.
B) of nuclear forces. C) of gravitational forces. D) of electrical forces. E) none of these. In einem dicht gepackten Metallkristall sind die zwischenatomaren Wechselwirkungen so stark, daß die Metallatome ihre Valenzelektronen verlieren und zu Ionen mit einem Elektronenrumpf aus abgeschlossenen Schalen werden Valenzelektronen werden können sich an jedem beliebigen Ort r im Gitter, also sowohl zwischen wie in den.
Electron and ion emission from solids By R. Jenkins and W. Trodden, pp. x+ London: Routledge & Paul, 7s. The thermal properties of solids By H. Goldsmid. vii+ London: Routledge & Paul, 7s. Inclusion in this list does not imply that the book may not subsequently be reviewed Administering Research.
The secondary-electron emission (SEE) coefficient, δ, was measured for thermally grown SiO 2 films on a Si wafer. As the thickness of SiO 2 film becomes greater than 40∼50 nm, the SEE curve changes to the double-humped shape having a low δ value from the typical ‘universal curve’ shown at ordinary SEE measurements.
We conclude, from a. Stray electrons were produced in the Ames Laboratory linear accelerator by the ion beam striking the target and various other parts of the accelerator. This experiment was done to determine if the stray electrons from parts of the accelerator other than the target could be reduced by using construction materials other than brass.
Measurements of the number of electrons produced. emission of electrons; this will vary depending on the composition and condition of the filament, but will usually be on the order of 3 to 4 amperes. The total-emission current, which provides an index of the total number of electrons emitted by the filament.
The trap or target current, which is the portion of the emitted electron current. HyperTransport System Architecture by MindShare, Inc. Staff; Don Anderson; Jay Trodden and a great selection of related books, art and collectibles available now at To enhance the efficiency of the Multistage depressed collector (MDC) of traveling wave tube amplifiers (TWTs), TiN film was deposited by arc ion plating.
The thickness and roughness of the film were respectively measured by scanning electron microscopy (SEM) and atomic force microscopy (AFM).
In order to study the effects of the preparation parameters and the process. Field emission from photo-excited nonequilibrium electron distributions were clearly observed, while no enhanced field emission due to optical electric fields appeared up to values of V/nm.
In einem dicht gepackten Metallkristall sind die zwischenatomaren Wechselwirkungen so stark, daß die Metallatome ihre Valenzelektronen verlieren und zu Ionen mit einem Elektronenrumpf aus abgeschlossenen Schalen werden Valenzelektronen werden können sich an jedem beliebigen Ort г im Gitter, also sowohl zwischen wie in den.
I will also consider the mitigating role of electric field emission of electrons on the disruption process of a negatively charged grain as its size falls below a critical size.
Jenkins R O and Trodden W G Electron and Ion Emission from Solids Dover Pub Sekanina Z and Farrell J A Solid Particles in the Solar System ed J.
Full text of "Bibliography and index on vacuum and low pressure measurement: January to December " See other formats. For a typical solid, the interatomic spacing is about × 10−10 m.
Assume each atom is in a cube with that dimension, and releases one valence electron, giving an electron density Ne/V ≈ 6 × m−3. Putting in the numbers, we ﬁnd • EF ≈ 9×10−19 J = 6 eV; • TF ≈ 70, K. The theory of cold field emission of electrons from metals is discussed in many textbooks and monographs, including the monograph by R.
Jenkins and W. Trodden, "Electron and Ion Emission From Solids" (Dover Publications, Inc., New York, N.Y., ), Chapter 4. Notations and Nomenclature. The use of the transmission SEE as opposed to reflection SEE for electron multiplication has been proposed by Lubszynski , McGee  and Sternglass  in the principal reason for this has been the short dynode lifetime due to the higher average currents which a particle-counter must be able to handle in the last few stages.
Expressions for the direct current and melting rate of wire electrodes in the submerged arc welding process are derived via the principles of irreversible thermodynamics. The melting rate of the consumable wire electrode under quasi steady state conditions consists of eight contributions: 1) Peltier heating effect, 2) Arc heating effect, 3) Contact resistance effect, 4) Radiation heat.
trodden The evaporation of barium from cathodes impregnated with barium-calcium-aluminate, 3BaO. Al2O3½CaO has been observed during the life of cathodes made with various thicknesses of two. Secondary electron emission materials are reviewed with the aim of providing guidelines for the future development of novel transmission dynodes.
Materials with reflection secondary electron yield higher than three and transmission secondary electron yield higher than one are tabulated for easy reference. Generations of transmission dynodes are listed in the order of the invention. Richardson's Law • The emitted current density J (A/m 2) is related to temperature T by the equation: W is work function A Richardson's constant A m-2 K-2 Tungsten = eV LaB 6 = eV • High temperature heating give higher J but shorten the source life through evaporation/ oxidation.
• Operation at compromising temperature: “Saturation Condition”.Dissociation of hydrogen molecules on metal filaments in H - ion sources. Plasma Sources Science and Technology3 (4) Resonant Electron Capture in Violent Proton-Hydrogen Atom Collisions. R.O. Jenkins, W.G. Trodden. Physical processes in small titanium ion .4 1 Hydrogen-Like Ion: An Atom (Ion) With One Electron nucleus (Z = 1 for neutral atoms).Since p →−ih¯∇ (see Appendix B.8), the quantum mechanical Hamiltonian for this single-particle nonrelativistic case takes the simple form H 2= − ¯h 2 2me Ze 4πεor, () where me is the mass of the electron, e is the elementary charge (which we take to be positive in this book), ¯h is .