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Title: Resonant spectra of quadrupolar anions

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1326124
Grant/Contract Number:
SC0013365; FG02-10ER41700
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 94; Journal Issue: 3; Related Information: CHORUS Timestamp: 2016-09-22 18:11:05; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Fossez, K., Mao, Xingze, Nazarewicz, W., Michel, N., Garrett, W. R., and Płoszajczak, M. Resonant spectra of quadrupolar anions. United States: N. p., 2016. Web. doi:10.1103/PhysRevA.94.032511.
Fossez, K., Mao, Xingze, Nazarewicz, W., Michel, N., Garrett, W. R., & Płoszajczak, M. Resonant spectra of quadrupolar anions. United States. doi:10.1103/PhysRevA.94.032511.
Fossez, K., Mao, Xingze, Nazarewicz, W., Michel, N., Garrett, W. R., and Płoszajczak, M. Thu . "Resonant spectra of quadrupolar anions". United States. doi:10.1103/PhysRevA.94.032511.
@article{osti_1326124,
title = {Resonant spectra of quadrupolar anions},
author = {Fossez, K. and Mao, Xingze and Nazarewicz, W. and Michel, N. and Garrett, W. R. and Płoszajczak, M.},
abstractNote = {},
doi = {10.1103/PhysRevA.94.032511},
journal = {Physical Review A},
number = 3,
volume = 94,
place = {United States},
year = {Thu Sep 22 00:00:00 EDT 2016},
month = {Thu Sep 22 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevA.94.032511

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  • The results of an investigation of the RRS spectra of the anions of Zn complexes of alkylated porphyrins are presented. The anions were generated by bringing the pigment dissolved in tetrahydrofuran into contact with metallic sodium. The RRS spectra were obtained on a Spex-Ramalog-4 spectrometer with excitation by lines of krypton and argon lasers in the 406-460-nm region. The data presented attest to the identical nature of the observed effects for all the compounds, despite the differences in the alkyl substituents.
  • The weak 2{ital p}{sup 5}4{ital f}{sup {ital n}+1} quadrupolar excitation is separated from the intense 2{ital p}{sup 5}5{ital d}{sup 1} white line at the gadolinium {ital L}{sub III} absorption edge in Gd{sub 3}Ga{sub 5}O{sub 12} by resonant inelastic x-ray scattering. This separation is obtained monitoring the intensity of the 3{ital d}{sup 9}4{ital f}{sup {ital n}+1}5{ital d}{sup 0} and 3{ital d}{sup 9}4{ital f}{sup {ital n}}5{ital d}{sup 1} multiplet families, which are resonantly enhanced at the 2{ital p}{sup 5}4{ital f}{sup {ital n}+1} and 2{ital p}{sup 5}5{ital d}{sup 1} intermediate excitation energies, respectively. The dipolar and quadrupolar excitations are detected in spite ofmore » the Gd 2{ital p} lifetime broadening, thanks to the large Coulomb energy difference between the 3{ital d}{sup 9}4{ital f}{sup {ital n}+1}5{ital d}{sup 0} and 3{ital d}{sup 9}4{ital f}{sup {ital n}}5{ital d}{sup 1} multiplet families.« less
  • Quadrupolar transitions can play an important role in X-ray absorption spectroscopy, especially when it is used for magnetic measurements, like in X-ray Magnetic Circular Dichroism or Resonant Magnetic Scattering. We show here that resonantly excited Ti KL2,3L2,3 Auger spectra of TiO2 (110) carry a clear signature of quadrupolar transitions from the 1s to localized eg and t2g d-like states. The quadrupolar nature of the observed additional spectator lines are clearly demonstrated by their angular dependence, and their intensity is used to locate and quantify the quadrupolar transitions in the absorption spectrum.
  • Quadrupolar ordering in a 5f electron system has been observed directly for the first time, using x-ray scattering techniques. In UPd{sub 3} at low temperatures satellite peaks appear at (1,0,l) (orthorhombic notation) with l odd and even. Both sets of peaks show a resonant enhancement of the scattering at the M{sub IV} edge of U. At resonance, the dominant scattering of the l odd peaks occurs in the unrotated polarization channel, whereas for l even a significant rotated component is found. These results are discussed in terms of possible structures of the antiferroquadrupolar phases.