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AbstractAbstract
[en] Variation trends across the AnO2 series of An5f-electron covalent bonding and An5f→O3s, O2p→An5f charge transfer energies, are studied using DV-Xα relativistic spin-polarised computation of electronic structures applied to 11 'AnO8' clusters, from ThO8 to FmO8. It is found that the binding energies of 5f orbitals, therefore the An5f-O2p hybridisation, are increasing though the 5f orbitals are localising across the An series. In our calculations, the 3s and 3p ionic-like orbitals of O2- ions are included for the first time as LCAO-MO bases. Then, the conduction band is a mixing of O3s and An6d and its lower edge corresponds to an O3s-dominated state. Moreover, the calculated charge transfer (CT) energies of An5f→O3s and O2p→An5f transitions show the so-called tetrad effect when CT energies, respectively increasing and decreasing across the AnO2 series. It is pointed out that the tetrad effect here comes mainly from the special spin-polarised pattern of 5f levels and the increasing general trend of 5f binding energies. (orig.)
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10 refs.
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Journal Article
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Bauer, Ernst G.
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)2001
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)2001
AbstractAbstract
No abstract available
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Source
LBNL/ALS--13417; AC03-76SF00098; Journal Publication Date: March 2001
Record Type
Journal Article
Journal
Journal of Electron Spectroscopy and Related Phenomena; ISSN 0368-2048;
; CODEN JESRAW; v. 114-116; [10 p.]

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Mermet, Jean-Michel, E-mail: jeanmichel.mermet@wanadoo.fr2010
AbstractAbstract
[en] Calibration is required to obtain analyte concentrations in atomic spectrometry. To take full benefit of it, the adequacy of the coefficient of determination r2 is discussed, and its use is compared with the uncertainty due to the prediction bands of the regression. Also discussed from a tutorial point of view are the influence of the weighting procedure and of different weighting factors, and the comparison between linear and quadratic regression to cope with curvatures. They are illustrated with examples based on the use of ICP-AES with nebulization and laser ablation, and of LIBS. Use of a calibration graph over several orders of magnitude may be problematic as well as the use of a quadratic regression to cope with possible curvatures. Instrument softwares that allow reprocessing of the calibration by selecting standards around the expected analyte concentration are convenient for optimizing the calibration procedure.
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S0584-8547(10)00139-4; Available from http://dx.doi.org/10.1016/j.sab.2010.05.007; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
Spectrochimica Acta. Part B, Atomic Spectroscopy; ISSN 0584-8547;
; CODEN SAASBH; v. 65(7); p. 509-523

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Direct extraction of exchange splittings from magnetic x-ray dichroism in photoelectron spectroscopy
Tobin, James G.; Goodman, Keith W.; Schumann, Frank O.; Willis, Roy F.; Kortright, Jeffrey B.; Denlinger, Jonathan D.; Rotenberg, Eli; Warwick, Anthony; Smith, Neville V.
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)1998
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)1998
AbstractAbstract
No abstract available
Source
LBNL/ALS--846; AC03-76SF00098; Journal Publication Date: January 12 1998
Record Type
Journal Article
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Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Len, P.M.; Thevuthasan, S.; Kaduwela, A.P.; Van Hove, M.A.; Fadley, C.S.
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)1997
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)1997
AbstractAbstract
No abstract available
Primary Subject
Source
LBNL/ALS--1059; AC03-76SF00098; Journal Publication Date: April 1997
Record Type
Journal Article
Journal
Journal of Electron Spectroscopy and Related Phenomena; ISSN 0368-2048;
; CODEN JESRAW; v. 85(1-2); [10 p.]

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AbstractAbstract
[en] A background correction method based on wavelet transform was devised and applied to inductively coupled plasma atomic emission spectrometry (ICP-AES). The proposed approach separated background from analyte signal according to their different frequencies. Compared with the analyte signal, the background has a low frequency. By removal of the components attributed to the signal, the background over the spectral window of the analyte line can be fitted through wavelet reconstruction. The results showed that the wavelet transform technique could handle all kinds of background and low signal-to-background ratio spectra, and required no prior knowledge about the sample composition, no selection of suitable background correction points, and no mathematical assumption of the background distribution. This technique performed as well as the conventional three-point background correction method for linear backgrounds, and provided better results than the latter for curved backgrounds. The proposed procedure was illustrated, by processing real spectra, to be an effective and practical tool for background correction in ICP-AES
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Source
S0003267003003957; Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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INIS VolumeINIS Volume
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Len, Patrick; Thevuthasan, Suntharampillai; Fadley, Charles S.; Van Hove, Michel A.; Denlinger, Jonathan D.; Tonner, Brian P.; Rotenberg, Eli; Kevan, Stephen D.; Gog, T.; Materlik, G.
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)1994
Ernest Orlando Lawrence Berkeley National Lab., Advanced Light Source, Berkeley, CA (United States). Funding organisation: US Department of Energy (United States)1994
AbstractAbstract
No abstract available
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Secondary Subject
Source
LBNL/ALS--535; AC03-76SF00098; Journal Publication Date: May 6 1994
Record Type
Journal Article
Journal
Journal of Electron Spectroscopy and Related Phenomena; ISSN 0368-2048;
; CODEN JESRAW; v. 68; [10 p.]

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INIS VolumeINIS Volume
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AbstractAbstract
[en] Analytical expressions and numerical results describing ionization of atoms by intense linearly polarized ultrashort laser pulses are obtained in the frame of the Keldysh approach. Photoelectron spectra and total ionization probabilities are presented for several analytical models of a single-cycle laser pulse. In particular, strong left-right asymmetry of the spectra is shown for the case of odd pulses.
Primary Subject
Source
S0375-9601(09)01354-1; Available from http://dx.doi.org/10.1016/j.physleta.2009.10.058; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Cubric, D.; Kholine, N.; Konishi, I., E-mail: dane.cubric@srlab.co.uk2011
AbstractAbstract
[en] A new class of charged particle energy analyzers, spheroid energy analyzers (SEA) that are characterized with very high energy resolution and transmission, is presented. A prototype analyzer was built that has achieved a relative energy resolution of 0.05% at a transmission of 21% out of a 2π steradian. A very high order of focusing of these analyzers is presented via simulation that indicates the existence of 13th order focusing in one of our models. This promises further improvements in energy resolution in future practical analyzer embodiments. A novel geometrical framework is presented, which describes SEA analyzers in general terms within which well known types of analyzers CMA and CHA appear to be only particular examples.
Primary Subject
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CPO-8: 8. international conference on charged particle optics; Singapore (Singapore); 12-16 Jul 2010; S0168-9002(10)02926-8; Available from http://dx.doi.org/10.1016/j.nima.2010.12.146; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Literature Type
Conference
Journal
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; ISSN 0168-9002;
; CODEN NIMAER; v. 645(1); p. 234-240

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Parilis, E.S.
International conference on the physics of electronic and atomic collisions. 10th. Volume 11977
International conference on the physics of electronic and atomic collisions. 10th. Volume 11977
AbstractAbstract
No abstract available
Primary Subject
Source
CEA, 75 - Paris (France); p. 186-187; ISBN 2-7272-0020-X;
; 1977; p. 186-187; North-Holland; Amsterdam, Netherlands; 10. international conference on the physics of electronic and atomic collisions; Paris, France; 21 - 27 Jul 1977; Published in summary form only.

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Book
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