Simple systems under high pressure

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Simple systems under high pressure

• Federico Gorelli

INFM Researcher (Tenure Track) CRS Soft
LENS associate (Eur. Lab. for Non Linear
Spectroscopy)
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Pressure effects on molecular systems
P
P
Molecular crystal
Gas phase P0
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Pressure induced transformations
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Experimental facilities at LENS
High Pressure facility Diamond Anvil Cell
(DAC), resistive heaters and cryostats Raman and
Brillouin scattering setting up 0.5m triple
monochromator (Acton THR-555) double 2m
monochromator (Sopra) Krypton and Argon ion
lasers Infrared absorption High
resolution and sensitivity Fourier transform
Michelson interferometer Bruker IFS 120 X
ray diffraction Setting up a new laboratory
Mo tubefocusing opticsCCD detector
High Pressure Group at LENS Roberto Bini
(Associate Prof.) Federico Gorelli
(Researcher) Mario Santoro (Researcher) Matteo
Ceppatelli (Post Doc) Lucia Ciabini (Post
Doc) Valentina Giordano (PhD) Margherita Citroni
(PhD) Luca Fontana (PhD)
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Recent activity

• Setting up a new X ray diffractometer for powders
  under high pressure (inside the DAC Diamond Anvil
  Cell) (Valentina Giordano and Samuele Ciattini)
• Experimental study of the high pressure and
  temperature crystalline phases of CO2 with
  vibrational spectroscopy (IR and Raman)
  (Valentina Giordano and Roberto Bini) Phys. Rev.
  Lett. accepted (2004)
• Amorphyzation of benzene at high pressure and
  temperature studied with IR absorption and X ray
  diffraction techniques (ESRF) (Mario Santoro,
  Roberto Bini and Lucia Ciabini) work in progress
• Raman scattering study of the phase diagram (P, T
  and composition) of lead zirconate titanate solid
  solution (PZT ceramic) (Julian Haines and Jerome
  Rouquette) Phys. Rev. B 70, 014108 (2004)
• Study of the phase diagram of Nitrogen with Raman
  scattering measurements (Leonardo Tassini and
  Lorenzo Ulivi) submitted to J. Phys. Chem. (2004)
• IR absorption study on sulfur (B. Eckert, H.
  Jodl) and on metallization of SnO, SiO and GeO
  (E. Sterer, A. Pesah) local contact for the
  guests of the High Pressure Facility at LENS

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Future research

• Soft matter under pressure
• Study of glass transitions with pressure and
  temperature
• Study of the dynamics of non equilibrium systems
  at high pressure
• Collaborations with G. Ruocco, R. di Leonardo, S.
  Capaccioli, R. Eramo and with the Disordered
  Systems Group at LENS (R. Torre)