TY - JOUR

T1 - Spectral distribution of oscillator strength for core-to-valence transitions probed by using X-ray absorption and total electron yield modes

AU - Брыкалова, Ксения Олеговна

AU - Павлычев, Андрей Алексеевич

N1 - Funding Information: Acknowledgement: We are thankful to G-RISC projects No. P-2010a-7, P-2011a-3 and P-2013b-8 and acknowledge RFBR grant No. 15-02-06368.

PY - 2018/5/24

Y1 - 2018/5/24

N2 - Changes in spectral distribution of oscillator strength for core-to-valence transitions probed by X-ray absorption and total electron yield (TEY) modes are studied in more detail. The quantitative analysis of their redistribution in TEY due to the saturation effect is performed by applying the model M $\tilde M$-function method suggested by Flesch et al. J. Chem. Phys. 138 (2013) 144302. The model M $\tilde M$-function method is generalized to account for the saturation-induced distortion of the line shape of the transitions embedded into the core ionization continua and located below them. It is shown that TEY measurements produce essential changes not only in the relative intensity of the transitions but also shift upward the transition energy, broaden the Lorentzian and Gaussian widths and enhance the line asymmetry. The Gaussian width of the TEY signal undergoes the most substantial broadening though the Lorentzian width increases significantly too. The saturation-induced distortion of the line shapes is not negligible even if the well-known escape-to-penetration condition is valid.

AB - Changes in spectral distribution of oscillator strength for core-to-valence transitions probed by X-ray absorption and total electron yield (TEY) modes are studied in more detail. The quantitative analysis of their redistribution in TEY due to the saturation effect is performed by applying the model M $\tilde M$-function method suggested by Flesch et al. J. Chem. Phys. 138 (2013) 144302. The model M $\tilde M$-function method is generalized to account for the saturation-induced distortion of the line shape of the transitions embedded into the core ionization continua and located below them. It is shown that TEY measurements produce essential changes not only in the relative intensity of the transitions but also shift upward the transition energy, broaden the Lorentzian and Gaussian widths and enhance the line asymmetry. The Gaussian width of the TEY signal undergoes the most substantial broadening though the Lorentzian width increases significantly too. The saturation-induced distortion of the line shapes is not negligible even if the well-known escape-to-penetration condition is valid.

KW - X-ray absorption

KW - gas-to-solid effects

KW - saturation effect

KW - total electron yield

KW - BENZENE

KW - SPECTROSCOPY

KW - NITROGEN

KW - SURFACE

KW - FREE ARGON CLUSTERS

UR - http://www.scopus.com/inward/record.url?scp=85047854836&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/spectral-distribution-oscillator-strength-coretovalence-transitions-probed-using-xray-absorption-tot

U2 - 10.1515/zpch-2017-1057

DO - 10.1515/zpch-2017-1057

M3 - Article

VL - 232

SP - 907

EP - 917

JO - Zeitschrift fur Physikalische Chemie

JF - Zeitschrift fur Physikalische Chemie

SN - 0942-9352

IS - 5-6

M1 - 1057

ER -