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The three-axis group operates seven three-axis spectrometers, instruments in which the monochromator, sample and analyser can each be aligned independently.

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M. Jimenez

Staff scientist
Instrument responsible IN8
Scientific project leader of IMPS


jimenez(at)ill.eu

Research field and other responsibilities:

My scientific interests are centered on the study of the dynamics of liquids (liquid metals, aqueous solutions, organic liquids......) on microscopic time and length scales. I am interested on the single particle dynamics and on the cooperative motions, known as collective excitations, on such systems. For those investigations I use mainly inelastic neutron scattering techniques (Three-Axis Spectroscopy and Time-of-Flight Spectroscopy). However I also perform complementary dynamical studies by means of other experimental techniques as Brillouin scattering and dielectric spectroscopy that allow to cover a wide time and spatial scale.

Since 2002 I am running in collaboration with the Spanish partners an instrumentation project, IMPS, a multiplexed secondary spectrometer for IN8. The commissioning of IMPS on IN8 will take place on December 2006.

Selection of Publications:

IMPS: A multianalyser detector system for the thermal three-axis spectrometer IN8, M. Jiménez-Ruiz, A. Hiess, R. Currat, J. Kulda and F.J. Bermejo, Physica B 385-386, 1086 (2006).


High-frequency collective excitations in molten and glassy Te studied by inelastic neutron scattering,
M.D. Ruiz-Martin, M. Jiménez-Ruiz, F.J. Bermejo and R. Fernéndez-Perea, Phys. Rev. B 73, 094201 (2006).


Brillouin scattering study of methanol-water solutions under pressure, M. Jiménez-Ruiz, R.J. Jiménez-Riobóo, V. Tissen, M.A. Ramos and H. Schober, Phys. Stat. Sol. 1, 3178 (2004).


Hydrogen-Bond Network Breakage as a first step to Isopropanol crystallization,
A. Sanz, M. Jiménez-Ruiz, A. Nogales, D. Martín y Marero and T.A. Ezquerra, Phys. Rev. Lett. 93, 015503 (2004).


Glassy dynamics of a kinetically constrained model: a direct comparison with experiment,
M. Jiménez-Ruiz, A. Criado, F.J. Bermejo, G.J. Cuello, F.R. Trouw, R. Fernández-Perea, H. Löwen, C. Cabrillo and H.E. Fischer, J. Phys.: Condens. Matter 14, 1509 (2002).