NEXAFS and MS-AES spectroscopy of the C 1s and Cl 2p - excitation and ionization of chlorobenzene: production of dicationic species

Physical Chemistry Chemical Physics ◽

10.1039/d1cp03121j ◽

2021 ◽

Author(s):

Lucia Helena Coutinho ◽

Fabio de Almeida Ribeiro ◽

Bruno Nunes Cabral Tenorio ◽

Sonia Coriani ◽

Antonio C. F. Santos ◽

...

Keyword(s):

Synchrotron Radiation ◽

Core Excitation ◽

Double Charge

We report on the single- and double-charge photofragment formation by synchrotron radiation, following C 1s core excitation and ionization and Cl 2p inner excitation and ionization of chlorobenzene, C6H5Cl. From...

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Core-Excitation Effects in Pion Double Charge Exchange

Physical Review Letters ◽

10.1103/physrevlett.52.894 ◽

1984 ◽

Vol 52 (11) ◽

pp. 894-897 ◽

Cited By ~ 22

Author(s):

Kamal K. Seth ◽

M. Kaletka ◽

S. Iversen ◽

A. Saha ◽

D. Barlow ◽

...

Keyword(s):

Charge Exchange ◽

Core Excitation ◽

Double Charge Exchange ◽

Double Charge

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Resonant Valence-Band Satellites at the Ni-3p Edge of Ni3Al, Ni3Ga and Ni3In

International Journal of Modern Physics B ◽

10.1142/s0217979298001605 ◽

1998 ◽

Vol 12 (26) ◽

pp. 2757-2767 ◽

Cited By ~ 3

Author(s):

Li-Shing Hsu ◽

K.-L. Tsang ◽

S.-C. Chung

Keyword(s):

Synchrotron Radiation ◽

Intermetallic Compounds ◽

Valence Band ◽

Configuration Interaction ◽

The Self ◽

Excitation Threshold ◽

Coulomb Interactions ◽

Core Excitation ◽

Energy Correction ◽

Self Energy

Valence-band photoemission sspectra of Ni 3 Al , Ni 3 Ga and Ni 3 In were measured with synchrotron radiation at photon energies around the Ni-3p core excitation threshold. The valence-band satellites are resonantly enhanced. The number of holes per Ni atom in the Ni-d band for Ni 3 Al , Ni 3 Ga and Ni 3 In is estimated to be 0.37, 0.30 and 0.34, respectively. The self-energy correction due to the configuration interaction is 0.72, 0.71 and 0.72 eV, respectively, for Ni 3 Al , Ni 3 Ga and Ni 3 In . The Fano parameters and the effective Coulomb interactions between two 3D holes for these intermetallic compounds are determined.

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A quantitative approach to inner shell losses

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010010977x ◽

1978 ◽

Vol 36 (1) ◽

pp. 526-527 ◽

Cited By ~ 2

Author(s):

R.D. Leapman ◽

P. Rez ◽

D.F. Mayers

Keyword(s):

Energy Transfer ◽

Cross Section ◽

Cross Sections ◽

Accurate Determination ◽

Background Intensity ◽

Core Excitation ◽

Quantitative Basis ◽

Cross Section Differential ◽

Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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Direct Observation of Monolayer Zones in Al-wt 4% Cu

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100178823 ◽

1990 ◽

Vol 48 (1) ◽

pp. 14-15

Author(s):

B. Jouffrey ◽

D. Dorignac ◽

A. Bourret

Keyword(s):

Solid Solution ◽

Synchrotron Radiation ◽

Direct Observation ◽

Supersaturated Solid Solution ◽

Original Model ◽

X Ray ◽

Image Position

Since the early works on GP zones and the model independently proposed by Preston and Guinier on the first steps of precipitation in supersaturated solid solution of aluminium containing a few percent of copper, many works have been performed to understand the structure of different stages in the sequence of precipitation.The scheme which is generally admitted can be drawn from a work by Phillips.In their original model Guinier and Preston analysed a GP zone as composed of a single (100) copperrich plane surrounded by aluminum atomic planes with a slightly shorter distance from the original plane than in the solid solution.From X-ray measurements it has also been shown that GP1 zones were not only copper monolayer zones. They could be up to a few atomic planes thick. Different models were proposed by Guinier, Gerold, Toman. Using synchrotron radiation, proposals have been recently made.

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