Evidence for a quadrupolar excitation channel at the {ital L}{sub III} edge of gadolinium by resonant inelastic x-ray scattering
- European Synchrotron Radiation Facility, F-38043 Grenoble Cedex (France)
- National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Department of Physics, University of Helsinki, Siltavuorenpenger 20D, SF-00170 Helsinki (Finland)
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 of 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.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 69306
- Journal Information:
- Physical Review Letters, Vol. 74, Issue 24; Other Information: PBD: 12 Jun 1995
- Country of Publication:
- United States
- Language:
- English
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