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	Electron excitation - Wikipedia, the free encyclopedia
		Electron excitation is the movement of an electron to a higher energy state.
		Within a semiconductor crystal lattice, thermal excitation is a process where lattice vibrations provide enough energy to move electrons to a higher energy band.
		When an excited electron falls back to a lower energy state again, it is called electron relaxation This can be done by radiation of a photon or giving the energy to a third spectator particle as well.
	en.wikipedia.org /wiki/Electron_excitation (143 words)

	[No title]
		The corresponding 100-eV excitation cross sections for the X and A states deduced from the total N$_2$$^+$ 100-eV electron impact ionization cross section which is known from other measurements are 86.9+or-7.010/sup -18/ cm/sup 2/ and 87.9+or-7.010/sup -18/ cm/sup 2/, respectively.
		Measurements at various gas pressures, electron energies, and electron currents indicated that there was not a simple relation between the observed relative populations of the vibrational levels and the excitation rate of ground state molecules to these levels.
		Relative excitation functions are presented for N$_2$ first negative bands with v' values from 0 through 9 for 0 to 50 eV, for the (0,0) and (1,0) N$_2$$^+$ first negative bands for 0 to 450 eV, and for the (3,0) and (4,1) N$_2$$^+$ Meinel bands for 0 to 450 eV.
	nova.stanford.edu /~vlf/bibliography/nitrogen.bib (2886 words)

	Overview
		Since the direct excitation cross section is usually desired, one must determine the total cascade contribution and subtract this from the apparent cross section.
		An excitation function is a plot of cross section versus the incident electron energy.
		Excitation functions for the direct cross section generally fall into a number of catergories, depending upon what the final (excited) state is. For example, in electron impact excitation of ground state helium there are three families of excitation functions:
	raptor.physics.wisc.edu /overview/overview.htm (527 words)

	OhioLINK ETD: Modoran, Georgia
		Electron plasma formation plays a crucial role and is the focus of this work.
		There are two proposed interactions that contribute to electron plasma formation: photoionization and avalanche ionization, but the individual contribution of each of these ionization processes is controversial.
		We also present measurements that separate the two excitation processes and identify the role played by each in the ionization of media.
	rave.ohiolink.edu /etdc/view?acc_num=osu1133273960 (318 words)

	TiNi as a nano-actuator: experimental verification of excitation by electron-beam heating (Site not responding. Last check: 2007-10-01)
		A scanning electron beam is positioned to produce local heating, and to observe the resulting motion.
		A scanning electron microscope e-beam may be used to provide the energy, and beam steering can bring a spot of energy a fraction of a micron in diameter to bear on a sample.
		This was to enable the electron beam to bring the temperature through a relatively small temperature change to effect the phase transformation.
	www.innovation-on-demand.com /tini.htm (1496 words)

	Electron Impact Excitation (Site not responding. Last check: 2007-10-01)
		Electron impact excitation of simple atoms is being studied by observing both the scattered electron after excitation of the atom to a particular state and the photon emitted in the decay of the same atom, using coincidence techniques.
		Measurement of the angular and polarisation correlations between the scattered electrons and the emitted photons gives fundamental information such as the shape of the excited state charge cloud and the expectation value of the angular momentum transferred in the collision.
		Such studies provide the most stringent possible test of theoretical models of electron excitation and the programme is carried out in close collaboration with parallel theoretical studies.
	www.phys.ncl.ac.uk /research/atomic/ac1.html (342 words)

	Research - Natural Sciences - University of Newcastle
		The scattering of 40 eV electrons from magnesium: a polarization correlation study for the 3 singlet P state and differential cross sections for elastic scattering and excitation of the 3 singlet P and 3 triplet P states.
		Excitation of the (2p2)1D and (2s2p)1P autoionizing states of helium by 200 eV electron impact.
		Excitation of the D states of helium by electron impact.
	www.ncl.ac.uk /nsci/research/publications?staff=1984 (377 words)

	Electron-Ion Interactions (Site not responding. Last check: 2007-10-01)
		In the EBIT traps, the ions are constantly bombarded by electrons.
		In radiative recombination, an electron is captured into a vacant orbital of the ion, emitting a photon whose energy is equal to the sum of the electron’s initial kinetic energy and the binding energy of the state to which it is captured.
		We quickly ramp the electron beam energy over the range of energies to be studied.
	www-phys.llnl.gov /N_Div/EBIT/e_ion.html (376 words)

	Electron Impact Excitation of Inert Gases
		The last decade has witnessed enormous advances in technology which has permitted both experimentalists and theoreticians to perform measurements and calculations that were previously thought to be impossible.
		In fact, theoretical calculations have been so successful for excitation of these atoms that, if these is a disagreement between experiment and theory, the experiment would be questioned.
		An overview of the current status of theoretical calculations for electron excitation of the inert gases will be given in this talk.
	flux.aps.org /meetings/YR01/GEC01/abs/S10002.html (127 words)

	Session KW2 - Electron Collisions with Metal Vapors.
		In the experiment with Mn atoms electron exchange is observed directly, whereas in the electron-photon-coincidence experiment propensity rules for angular momentum orientation effects are studied.
		The slow electrons are described with a fluid model, in combination with the argon ions and Poisson's equation for a self-consistent electric field.
		Their further behavior, the ionization and excitation of the atoms, and the behavior of the various excited copper atom and ion levels, is described with a collisional-radiative model.
	flux.aps.org /meetings/YR01/GEC01/abs/S160.html (1158 words)

	Grazing-angle ion-induced electron excitation at metal surfaces
		Using grazing-angle, ion-induced electron emission spectroscopy at clean and oxygen-covered metal surfaces (Al, Cu, Fe, Ni(110) and Pd(110)), the authors have studied the angle-resolved energy distribution (ARED) of emitted electrons which directly reveals details of the initial electron excitation mechanisms.
		The authors find that secondary electron cascades are strongly suppressed and that the ion-induced electron excitation occurs predominantly at the topmost surface layer.
		The major excitation mechanisms for electron emission are single electron excitation via decay of surface and bulk plasmons (for 150 keV H
	stacks.iop.org /0953-8984/5/A249 (225 words)

	ICPEAC
		"Electron-photon correlations in electron-impact excitations of alkaline-earth atoms"
		Electron excitation of the D states of Mg: Calculation of the Stokes Parameters"
		Electron transfer to individual magnetic substates of multicharged ions"
	campus.umr.edu /physics/symposium/1correlation.html (250 words)

	Electron Excitation Cross Sections For The S // Transitions (ResearchIndex) (Site not responding. Last check: 2007-10-01)
		Abstract: Experimental and theoretical excitation cross sections are reported for the transitions 4 S 0 2P" and 4 4 P in The transition wavelengths (energies) are (1 eV), 4069 (3.05 eV), and 1256 (9.87 eV), respectively.
		The fraction of the // beam was assessed and minimized.
		The contribution of scattered electrons was reduced by the use of lowered magnetic field, use of a modulated radiofrequency voltage on the analyzing...
	citeseer.ist.psu.edu /380166.html (241 words)

	Electron impact excitation of the D states of Mg,
		Electron impact excitation of the D states of Mg,
		excitation of the $n$\,$^1D$ states of magnesium ($n=3$),
		results are presented for electron impact energies of 20
	www.ias.ac.in /pramana/v63/p977/abs.htm (83 words)

	[No title]
		Tayal and B. McLaughlin, Electron excitation cross sections for the $2s^22p^3~^4S^o$~$\rightarrow$~$2s^22p^3~^2D^o$ (Forbidden) and $2s^22p^3~^4S^o$~$\rightarrow$~$2s2p^4~^4P^e$ (Resonance) transitions in OII, The Astrophysical Journal (1995) 440, 421.
		B. McLaughlin and K. Bell, Electron collisional excitation of the fine structure levels of OII, Contributed papers of the ICPEAC XIX, Whistler, British Columbia, Canada, July (1995), 548, edited by J. Mitchell, J. McConkey and C. Brion.
		A. Hibbert, K. Higgins, A. Kingston and B.M. McLaughlin, Electron excitation of O$^+$ and photoionization of oxygen, Contributed papers of the ICPEAC XV, Brighton, UK, July (1987) 211, Edited by J. Geddes, H. Gilbody, A.
	cfa-www.harvard.edu /~bmcl/pubs.html (1385 words)

	Experiments: Hollow Cathode Metastable Source
		Atoms can be excited (by lasers, electron collisions, etc.) to energy levels above their ground states.
		The study of electron-metastable atom collisions is complicated by the difficulty of producing targets of metastable atoms in the lab.
		In this experiment, a low-energy electron beam crosses the atomic beam at a right angle.
	raptor.physics.wisc.edu /expts/hc.htm (476 words)

	NIST: Electron-Impact Cross Section Database
		This is a database primarily of total ionization cross sections of molecules by electron impact.
		The cross sections were calculated using the Binary-Encounter-Bethe (BEB) model, which combines the Mott cross section with the high-incident energy behavior of the Bethe cross section.
		Electron-impact excitation cross sections are also included for some selected atoms.
	physics.nist.gov /PhysRefData/Ionization/Xsection.html (156 words)

	Untitled Document
		Collisions by Electron with Diatomic Molecules," Fourth IntI.
		Excitation of H2 by Electron Impact" Sixth IntI.
		L.W. Carlson and N.F. Lane, "Atomic Excitations in He+ and H+ Reflection from a Metal Surface," I. Phys.
	www.ruf.rice.edu /~neal/publist.html (1766 words)

	Lake Forest College > Academics > Faculty > Scott Schappe
		"Electron-impact excitation of the CO molecule," paper M5 35, DAMOP Meeting of the American Physical Society, London, Ontario, Canada, Bull.
		"Electron Excitation Cross Sections into the Metastable Levels and Densities of Metastables of Argon and Krypton Atoms," paper D'12-59, Meeting of the American Physical Society, Crystal City, VA, Bull.
		"Electron Excitation of the 1s5 Metastable Level of Ar," paper K-23, Gaseous Electronics Conference, Champaign-Urbana, IL, Bull.
	www.lakeforest.edu /academics/faculty/schappe (696 words)

	Untitled Document
		CACULATION OF CORRELATION PARAMETERS FOR THE EXCITA-TION OF THE Mg AND Ba ATOMS BY ELECTRONS
		ELECTRON ATTACHMENT TO CF3Cl AND CH3Cl ON THE SURFACE AND IN THE BULK OF SOLID Kr Chem.
		ELECTRON ATTACHMENT TO CF3Cl AND CH3Cl ON THE SURFACE AND IN THE BULK OF SOLID KR International Conference on Photonic, Electronic, and Atomic Collisions, Santa Fe, NM, July 18-24, 2001.
	www.unl.edu /ifabrikant/publications.htm (3602 words)

	Electron-impact excitation-autoionization of helium in the S-wave limit
		Printing Tips: Select 'print as image' in the Acrobat print dialog if you have trouble printing.
		Excitation of the autoionizing states of helium by electron impact isshown in calculations in the s-wave limit to leave a clear signature in the singly differential cross section for the (e,2e) process.
		It is suggested that such behavior should be seen generally in (e,2e) experiments on atoms that measure the single differential cross section.
	repositories.cdlib.org /lbnl/LBNL-56549 (127 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		Energy Citations Database (ECD) Document #5960046 - Electron capture by and electron excitation of two-electron fluorine ions incident on helium
		Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
		Electron capture by and electron excitation of two-electron fluorine ions incident on helium
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=5960046 (154 words)

	Infrared Auroral Emissions Driven by Resonant Electron Impact Excitation of NO Molecules
		The main process leading to the production of these excited molecules was thought to be chemiluminescence, whereby excited nitrogen atoms interact with oxygen molecules to form vibrationally excited nitric oxide (NO*) and atomic oxygen.
		Here we show evidence that a different production mechanism for NO, due to low energy electron* impact excitation of NO molecules, is responsible for more than 30% of the NO auroral emission near 5 μm.
		Petrovic, M. Jelisavcic, R. Panajotovic, and S. Buckman (2004), Infrared Auroral Emissions Driven by Resonant Electron Impact Excitation of NO Molecules, Geophys.
	www.agu.org /pubs/crossref/2004/2003GL019151.shtml (278 words)

	[No title]
		Ò (ó1¨3State of computational theory for electron dynamics¨ïSimple calculations (single configuration targets) for elastic and electronic excitation on polyatomics can have important impact Even the simplest calculations on large polyatomics (e.g.
		Internal conversion of energy after excitation, triplet excitation, THIS is what you need 100 TFLOPs for, and this is the quant chem + electron dyn.
		Direct evaluation of summed or average dynamical quantities e.g.
	www.lbl.gov /ICSD/mccurdy/EPIC_notes_1/EPIC.vers5.ppt (229 words)

	High power flowing gas laser with profiled electron beam excitation (US3962656)
		High power flowing gas laser with profiled electron beam excitation (US3962656)
		A high power, cw, high pressure, electrically excited flowing gas laser is disclosed wherein a laser excitation transverse to the direction of gas flow is initiated by an electron beam perpendicular to the gas flow direction.
		This profiling, which may be achieved by tapered width apertures in either an electron beam window support member or in an electron gun grid, provides an appropriate heat input to the laser gas to minimize gas density variations in the excitation region and thereby optimize the beam quality of the generated laser beam.
	www.delphion.com /details?pn10=US03962656 (259 words)

	[No title]
		Additional analysis of the integral cross sections using a Fano plot (figure 5) has provided a check of this conclusion.
		The Fano plot obtained from the excitation functions of Leep and Gallagher (1976) is consistent with our experiment, as well as with our MCGS results at higher energies.
		Crowe and Dr D Fursa for sending us their e/Mg data in numerical form.
	www.math.yorku.ca /Who/Faculty/Stauffer/Mg_ii_d.doc (1112 words)

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