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Marc SIMON
Laboratoire de Chimie Physique-Matière et RayonnementUniversité Pierre et Marie Curie, Paris, FRANCE
Gas phase/solid state Haxpesproject at SOLEIL
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Marc Simon, Loïc Journel, Renaud Guillemin, Bertrand Pilette, Thierry Marin and Stéphane Carniato
Abhay Shukla
Svante Svensson, Olle Björneholm, Gunnar Öhrwall and Maria Novella Piancastelli
Dennis Lindle and Wayne Stolte
Jean-Pascal Rueff, James Ablett, Dominique Chandesris and Patrick Lefèvre
Faris Gel'mukhanov
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OutlineIntroduction
RIXS and ultrafast nuclear motion (femtosecond Regime)
Scientific case in Atomic and Molecular PhysicsUltrafast nuclear motion (attosecond regime)Recoil effect (vibrational and rotational)Clusters
Design and schedule of the projectThe GALAXIES beamlineElectron analyser
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Resonant Inelastic X-Ray Scattering on Atoms and Molecules in the tender X-Ray region (2000eV-12 keV)
Resonant Raman regime, J.-Cl. Dousse (Fribourg, Switzerland); Phys. Rev. Lett. (2006)
RIXS on HCl: Subfemtosecond nuclear motion, M. Simon et al., Phys. Rev. A (2006)
Dispers./nondispers. at threshold, M. Zitnik (Ljubljana, Slovenia), Phys. Rev. A (2007)
Polarisation measurements, D. Lindle (ALS, USA), Rev. Sci. Instrum. (2007)
Linear dichroism in RIXS, R. Guillemin et al., Phys. Rev. Lett. (2008)
K shell Double Photoionization J.-Cl. Dousse et al., Phys. Rev. Lett. (2009)
Argon hypersatellites, M. Kavcic et al., Phys. Rev. Lett. (2009)
ħωincident
ħω’emitted
Ground stateFinal state
Excited state
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Absorption spectrum of gas-phase HCl around the Cl 1sthreshold.
Potential Energy CurvesDFT
Ultrafast nuclear motion of K shell excited HCl molecule
KV
KL
***
*
****
**
natural width τ
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Lifetime
1.05 femtosec
Elastic peak broadened by nuclear motion
M. Simon, L. Journel, R. Guillemin, W. C. Stolte, I. Minkov, F. Gel’mukhanov, P. Salek, H. Ågren,S. Carniato, R. Taïeb, A. C. Hudson, and D. W. Lindle, Phys. Rev. A 73 (2006) 020706
Chemical bond elongation: 10 picometerswithin 1 femtosecond
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Molecular features in RIXSComparison with atomic RIXS
General conclusion: RIXS in molecules driven by the topology of PES of the initial, intermediate, and final states.
Nuclear dynamics of the core-excited state.
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2.4
2.0
1.6
1.2L
arge
ur (e
V)
2826282528242823282228212820Energie d' excitation (eV)
Kα exp. théorie
2625
2624
2623
2622
2621
2620
Posi
tion
du p
ic (e
V)
2826282528242823282228212820
exp. theorie
Kα
Resonant Kα emission of the HCl molecule
2 spin-orbit component: 2p3/2 and 2p1/2
Width and dispersion dependon the energy detuning Ω.
Inte
nsité
[uni
t. ar
b.]
2628262626242622262026182616Energie des photons diffusés [eV]
Ω = 0
Ω = - 0.56eV
Ω = - 1.56eV
Ω = - 2.56eV
HCl KL emission Théorie Experience
M. Simon et al. Phys. Rev. A 73, 020706 (2006)
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HAXPES: Gas phase and Solid state
A common UHV chamber and analyser equipped with a removable gas cell and a 5 axis manipulator.
Preparation chamber and sample transfert.
Unique HAXPES available for Gas Phase.
RIXS diffractometer will be used by Gas phase andSolid state on the GALAXIES beamline
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Inte
nsity
(arb
. uni
ts)
2824282228202818 Kinetic energy (eV)
Experimental Broadenning ΔE = 100 meV ΔE = 600 meV
Vibrational progression allowing detailednuclear motion
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Recoil effect
T. D. Thomas et al., J. Chem. Phys. (2008)
Recoil excitation of vibrationalstructure in the carbon 1s
photoelectron spectrum of CF4
Localized character ofcore orbitals
Franck-Condon approximation not valid at high energy
Mean apparent ionization energy to producethe v=0 B state of N2
+ as a function ofphotoelectron kinetic energy. Solid circles, left-hand axis: From photoelectron spectroscopy.
T. D. Thomas et al., Phys. Rev. A 79 (2009)
Recoil induced rotationalexcitation of the B state in N2
+
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G. Ohrwall, M. Tchaplyguine, M. Lundwall, R. Feifel, H. Bergersen, T. Rander, A. Lindblad, J. Schulz, S. Peredkov, S. Barth, S. Marburger, U. Hergenhahn, S. Svensson, and O. Björneholm, Phys. Rev. Lett. (2004)
10 100 1000 100000.1
1
10
100
0.1
1
10
100
2
Total yieldin transitionmetals and rare earths
"classic" range for photoelectron spectroscopy
HIKE - range
extrapolated:Electron escape depths - experimental:
Inel
astic
mea
n fr
ee p
ath
(nm
)
Electron kinetic energy (eV)
HAXPES
Atom
Surface
Bulk
Neon clusters <N> = 900
Structure determination of clusters
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- Phase 2’ beamline (mid 2010)
- U20 undulator, energy Range : 2.2-12 keV
- Two modes of Focalization: > High-Flux: 80×35 µm² (H×V) FWHM> Micro-Focus: 5×5 µm² (H×V) FWHM
- Scientific case: RIXS / HAXPESStrongly correlated materials (3d metal), heavy Fermions
compounds (4f / 5f elements)> Local electronic / chemical properties: complex materials> In-situ study: high pressure, chemistry
Diluted phases
- Ultimate resolution: Difractometer / Electron analyser-200 meV at 8 keV of photon energy-35 meV at 12 keV of electron kinetic energy
Galaxies beamline
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Resolution\focus Classical focus75×35 µm² (H×V) FWHM
Microfocus14×9 µm² FWHM
without channel-cutsE/ΔE = 12000 à 6000
6×1013 ph/s 2×1013 ph/s
Si311 (n = 1)E/ΔE = 55000
6×1012 ph/s 2×1012 ph/s
Si220 (n = 2)E/ΔE = 150000
2×1012 ph/s 5×1011 ph/s
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Electron analyser
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HAXPES Workshop
SOLEIL 18-19th of January 2010
Svante SVENSSON: ChairmanJean-Pascal RUEFF and Marc SIMON: Co-chairs