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Tuesday, July 21, 2020 | History

2 edition of Quantal investigations of certain excitation and ionization processes. found in the catalog.

Quantal investigations of certain excitation and ionization processes.

Uno OМ€pik

# Quantal investigations of certain excitation and ionization processes.

## by Uno OМ€pik

Published .
Written in English

Edition Notes

Thesis (Ph. D.)--The Queen"s University of Belfast, 1954.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL19421418M

A Qualitative and Quantitative Post-Mortem Analysis: Studying Free-Radical Initiation Processes via Soft Ionization Mass Spectrometry Dominik Voll,1 Thomas Junkers,2 Christopher Barner-Kowollik1 1Preparative Macromolecular Chemistry, Institut fu¨r Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, Karlsruhe, GermanyCited by: This process causes primary and secondary ionization events. The alpha particle loses an average of 34 eV per ionization event and therefore a 34 meV alpha particle could cause up to , ionizations creating , ion pairs before coming to rest in a few centimeters of air.

Purchase Advances in Gas Phase Ion Chemistry, Volume 3 - 1st Edition. Print Book & E-Book. ISBN , Photosensitization is a process of transferring the energy of absorbed light. After absorption, the energy is transferred to the (chosen) reactants. This is part of the work of photochemistry in general. In particular this process is commonly employed where reactions require light sources of certain wavelengths that are not readily available.

The excitation or ionization of atomic electrons by plasma electron impacts are represented as photo-processes under the action of flux of equivalent photons introduced by E. Fermi. The total electron impact single ionization cross-sections of ions W k + with respective rates have been calculated and compared with the available experimental and.   In order to clarify the mechanism and the influence of the initial charge state and target atomic parameters for the formation of L-shell multiple ionization state of Arq+ ions produced by the Cited by: 2.

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### Quantal investigations of certain excitation and ionization processes by Uno OМ€pik Download PDF EPUB FB2

This book invites the reader to learn more about the excitation and ionization of atoms and molecules by leading to the discovery of new processes and the excitement of surprising results.

Hans Kleinpoppen is Editor of Polarized Electron/Polarized Photon Physics (Springer, ) and Selected Topics on Electron Physics (Springer, ).Author: Afzal Chaudhry, Hans Kleinpoppen. This book invites the reader to learn more about the excitation and ionization of atoms and molecules by leading to the discovery of new processes and the excitement of surprising results.

Hans Kleinpoppen is Editor of Polarized Electron/Polarized Photon Physics (Springer, ) and Selected Topics on Electron Physics (Springer, ). Part of the Physics of Atoms and Molecules book series (PAMO) In this article we survey some new theoretical results on (e, 2e) excitation — ionization and excitation — autoionization of ground state helium.

A fuller account may be found in references [1–3].Cited by: 6. A detailed investigation of excitation of He (1s 2) 1 S to He (1snp) 1 P degree(s) (n equals 2 - 5) states and ionization-excitation of He (1s 2) 1 S to He (2p) 2 P degree(s) and He (3p) 2 P degree(s) states in e-+ He and H + + He collision systems is presented for a wide range of projectile velocities ( a.u.

Cited by: 2. Ionization and excitation of atoms and molecules 5. Passing of charged particles through matter 6. Interaction of gamma quanta with matter 7. Interaction of neutrons with matter 8. Elementary processes of the transformation of radiation energy in matter 9. Electron attachment Diffusion and drift of charges Recombination of charges The spectra of multiple excitation/ionization of the CO in the gas phase in the region of the 2σ-shell ionization threshold are studied theoretically.

The processes of additional excitation/ionization from 1 π - 4 σ - and 5 σ -shells are by: 5. EXCITATION AND IONIZATION BY ELECTRON IMPACT energies it overestimates by a factor of about 5 while at high energies the ratio Q/Qci increases as log W. I n a q u a n t u m t r e a t m e n t one finds that rarely approaches unity, even for small impact p a r a m e t e r s ; this explains w h y the classical theory overestimates the low-energy cross,A 0 log.o (W / I) 10 by: A theory is presented for the rates of excitation, deexcitation, and ionization arising from the impact of two heavy particles at thermal energies.

The rates for the forward and backward transitions are shown to satisfy the principle of detailed by: Ionization and excitation of some atomic targets and metal oxides by electron impact.

is used to derive total inelastic cross-sections resulting from ionization as well as excitation processes. Excitation and Ionisation. Excitation. Excitation is the result of energy being given to an electron moving it to a higher energy level.

It will still orbit the nucleus, unless the electron energy level is greater than the ionisation energy level of the atom. The book is meant as an introduction into the field and provides some basic theoretical understanding of the atomic processes occurring when a projectile hits another atom.

It also furnishes the tools for a mathematical description, however, without going deeper into the technical details, which can be found in the literature given.

In just over a decade, a number of non-perturbative close-coupling methods have been developed that are capable of very accurate calculations of elect Cited by: 4. The characteristic excitation/emission maximum at the time of maximum sheath voltage at each electrode is found to be based on two mechanisms: (i) a direct channel, i.e.

excitation/emission caused by electrons generated by Penning ionization inside the sheaths and (ii) an indirect channel, i.e. secondary electrons emitted from the electrode due Cited by: 6. In this Chapter, excitation, ionization and electron capture processes arising in ion-atom collisions are considered.

Special attention is paid to the processes involving negative hydrogen atoms. View. The excitation and ionization of the hydrogen atom in strong laser fields Article (PDF Available) in Central European Journal of Physics 8(2) April with Reads How we measure.

Similar processes, with even higher i in the range 16–20, may also come into play in the close neighborhood of the main HOMO peaks.

In both cases, the juxtaposition of one-electron direct ionization and higher-order (excitation + ionization) processes leads to the observed shift of Cited by: Hence, eV is the first excitation energy of the hydrogen atom. Similarly, the II, the III excitation energy of hydrogen atom are E 3 – E 1, E 4 – E 1 etc.

Ionization Energy. Exciting an electron in an atom from its ground state (i.e. n = 1 state) to the infinite state (i.e.

n $$\alpha$$ state) is called ionization. Excitation and Ionization Energies of Neon Theory The essence of this experiment is the demonstration of energy quantization of atoms, Ne in this case.

This is achieved via inelastic e− scattering oﬀ Ne atoms. As such it is closely related to the original Franck-Hertz experiment (), which showed that an electronFile Size: KB. In any plasma the most dominant collision process that can occur is due to electron impact on atomic species causing excitation and ionization processes.

8 — Excitation & Ionization [Revision: ] • Excitation – At absolute zero, all atoms of a given element are stationary, and electrons in each atom are in ground energy level.

As temperature raised above zero, atoms undergo thermal motions (mv2/2 ≈ 3kT/2) – Collisions between moving atoms impart energy to electrons, exctiting them File Size: 75KB. where k eV (0–1) is the rate of the resonant vibrational excitation process and v max is the number of vibrational quanta contained in the vibrational asymmetric ladder mode of CO a first approximation, we can imagine to pump vibrational energy only into the asymmetric mode of CO 2, thus k eV (0–1) can be taken as the rate of the process where () and () are the ground and the.Book Description.

During the last ten to fifteen years, researchers have made considerable progress in the study of inorganic scintillators. New scintillation materials have been investigated, novel scintillation mechanisms have been discovered, and additional scintillator applications have appeared.Aastal kolis perekond elama Põhja-Iirimaale, aastal lõpetas ta Belfasti ülikooli bakalaureusekraadiga matemaatikuna ja aastal füüsikuna, aastal kaitses ta samas tööga "Quantal investigations of certain excitation and ionization processes" doktorikraadi (PhD).