Absolute differential cross sections for electron excitation of silver at small scattering angles

We present results of our experimental and theoretical investigations of the electron excitation of the ground 4d105s state of silver. Differential cross sections (DCSs) for the excitation of the first combined resonant 4d105p state (two fine-structure levels with total angular momentum J=1/2 and 3/...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2012-05, Vol.279, p.53-57
Main Authors: Tošić, S.D., Pejčev, V., Šević, D., McEachran, R.P., Stauffer, A.D., Marinković, B.P.
Format: Article
Language:English
Subjects:
Angular momentum
Cross sections
Cross sections (physics)
Differential cross sections
Distortion
Excitation
Generalized oscillator strengths
Oscillator strengths
Scattering
Silver
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Summary:We present results of our experimental and theoretical investigations of the electron excitation of the ground 4d105s state of silver. Differential cross sections (DCSs) for the excitation of the first combined resonant 4d105p state (two fine-structure levels with total angular momentum J=1/2 and 3/2 which cannot be distinguished in the present experiment) were measured at electron-impact energies (E0) of 10, 20, 40, 60, 80 and 100eV and for a range of scattering angles (θ) from 3° up to 15°. Absolute DCSs were obtained by the normalization of relative differential cross sections to the optical oscillator strengths. The relativistic distorted wave (RDW) method was used to calculate DCSs and generalized oscillator strengths for each level separately and the combined results are compared with the measurements.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2011.10.066