scholarly journals The inner shell ionization of the atom by electrons

2008 ◽  
Vol 6 (1) ◽  
pp. 1-9
Author(s):  
A.R. Tancic ◽  
M. Nikolic ◽  
Z. Rakocevic
Keyword(s):  
Auger Electron ◽  
Rare Gas ◽  
Line Profiles ◽  
Auger Decay ◽  
Electron Spectra ◽  
Auger Spectra ◽  
Inner Shell Ionization ◽  
Resonant Processes ◽  
Shell Ionization ◽  
Auger Electron Spectra

In this paper, the resonant processes of inner-shell ionization of some atoms, followed by the Auger decay of the created vacancy was considered. The analytical expression for the line profiles in the Auger-electron spectra was analyzed. The line shift in the Auger spectra of the rare gas atom inner-shells was also considered.

Ion Desorption by Inner-shell Excitation and Photodegradation of Poly(vinylidene fluoride)

2005 ◽  
Vol 887 ◽  
Author(s):  
Koji Okudaira ◽  
Eiichi Kobayashi ◽  
Satoshi Kera ◽  
Kazuhiko Mase ◽  
Nobuo Ueno
Keyword(s):  
Auger Electron ◽  
Vinylidene Fluoride ◽  
Auger Spectrum ◽  
Final State ◽  
Electron Spectra ◽  
Ion Desorption ◽  
Poly Vinylidene Fluoride ◽  
Auger Spectra ◽  
The Spectator ◽  
Auger Electron Spectra

ABSTRACTAuger electron spectra (AES) and Auger electron photo-ion coincidence (AEPICO) spectra of poly(vinlylidene fluoride) (PVDF) were observed to study the mechanism of effective fluorine ion (F+) desorption by irradiation of photons corresponding to the transition from F 1s to s(C-F). In the AES at photon energy (hυ) = 690.3 eV (from F1s to |σ|(C-F)), the spectator-Auger shift is about 3 eV. At hn = 690.3 eV the contribution of spectator Auger electron to the observed Auger spectrum is large. In the F+ AEPICO spectra at hυ = 690.3 eV an intense peak appears. The peak positions of the F+ AEPICO spectra are in agreement with those of the Auger spectra. These results indicate that the mechanism for effective F+ ion desorption induced by the transition from F1s to σ(C-F) occurs through the spectator-Auger processes. The efficiency of ion desorption depends on the electronic structure of the spectator-Auger final state.

scholarly journals Feshbach-Fano Approach for Calculation of Auger Decay Rates Using Equation-of-Motion Coupled-Cluster Wave Functions: Numerical Examples and Benchmarks

2020 ◽  
Author(s):  
Wojciech Skomorowski ◽  
Anna Krylov
Keyword(s):  
Auger Electron ◽  
Equation Of Motion ◽  
Decay Rates ◽  
Coupled Cluster ◽  
Numerical Illustration ◽  
Auger Decay ◽  
Benchmark Tests ◽  
Analytical Approximations ◽  
Auger Spectra ◽  
Auger Electron Spectra

<p>This manuscript is concerned with numerical illustration of the theoretical framework for computing Auger decay rates based on the Feshbach-Fano approach and the equation-of-motion coupled-cluster ansatz, augmented with core-valence separation scheme. We consider two analytical approximations to the continuum orbital describing the Auger electron: a plane wave and a Coulomb wave with an effective charge. Theoretical Auger electron spectra are presented for benchmark systems (Ne, H<sub>2</sub>O, CH<sub>4</sub> and CO<sub>2</sub>) and compared with available experimental spectra. Results of the presented benchmark tests show that the proposed computational scheme provides reliable <i>ab initio</i> preditions of the Auger spectra. The reliability, cost-efficiency, and robust computational setup of this methodology offer advantages in applications to a large variety of systems. </p>

scholarly journals Feshbach-Fano Approach for Calculation of Auger Decay Rates Using Equation-of-Motion Coupled-Cluster Wave Functions: Numerical Examples and Benchmarks

2020 ◽  
Author(s):  
Wojciech Skomorowski ◽  
Anna Krylov
Keyword(s):  
Auger Electron ◽  
Equation Of Motion ◽  
Decay Rates ◽  
Coupled Cluster ◽  
Numerical Illustration ◽  
Auger Decay ◽  
Benchmark Tests ◽  
Analytical Approximations ◽  
Auger Spectra ◽  
Auger Electron Spectra

<p>This manuscript is concerned with numerical illustration of the theoretical framework for computing Auger decay rates based on the Feshbach-Fano approach and the equation-of-motion coupled-cluster ansatz, augmented with core-valence separation scheme. We consider two analytical approximations to the continuum orbital describing the Auger electron: a plane wave and a Coulomb wave with an effective charge. Theoretical Auger electron spectra are presented for benchmark systems (Ne, H<sub>2</sub>O, CH<sub>4</sub> and CO<sub>2</sub>) and compared with available experimental spectra. Results of the presented benchmark tests show that the proposed computational scheme provides reliable <i>ab initio</i> preditions of the Auger spectra. The reliability, cost-efficiency, and robust computational setup of this methodology offer advantages in applications to a large variety of systems. </p>

RESONANT AUGER SPECTRA OF Kr NEAR THE L3 THRESHOLD

2002 ◽  
Vol 09 (01) ◽  
pp. 85-88 ◽  
Author(s):  
T. IBUKI ◽  
K. OKADA ◽  
K. KAMIMORI ◽  
J. SASAKI ◽  
H. YOSHIDA ◽  
...  
Keyword(s):  
Photon Energy ◽  
Energy Region ◽  
Auger Electron ◽  
Electron Spectra ◽  
Auger Spectra ◽  
Resonant Transitions ◽  
First Time ◽  
Auger Electron Spectra

Auger electron spectra were studied by scanning the photon energy near the L 3 threshold of krypton. Two resonant transitions were observed in the photon energy region 1673–1678 eV for the first time. They were identified to be the resonant 3d -2 5s and 3d -2 4d states originating in the 2p 3/2-1 5s and 2p 3/2-1 4d excitations, respectively.

The gas phase L2,3VV Auger electron spectra of chlorine in XCl (X=H, D, Li, Na, K) molecules

2000 ◽  
Vol 113 (2) ◽  
pp. 662-675 ◽  
Author(s):  
Mika Kivilompolo ◽  
Antti Kivimäki ◽  
Helena Aksela ◽  
Marko Huttula ◽  
Seppo Aksela ◽  
...  
Keyword(s):  
Gas Phase ◽  
Auger Electron ◽  
Electron Spectra ◽  
Auger Electron Spectra
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