Research Facilities

The Chemical Physics research facilities are a foundation for the Estonian Magnetic Laboratory

Nuclear Magnetic Resonance (NMR) Spectrometers

AVANCE-III-800MHz (connected with 18.8T magnet/ 54mm heat opening diameter), 4 probeheads for solution NMR: BBO (D/H/BB), TXI (D/H/C/N), DUL (D/H/C) and Cryoprobe (D/H/C/N/P) and an automatic sample changer for multiple measurements . A probehead for solid state NMR: DVT BL3.2 (H/X/Y) (Bruker, for 3.2mm rotors) and a MAS-NMR H/X probe head for 1.8mm rotors, made in NICPB.

AVANCE-II-600MHz (14.1T/51 mm) is the most employed probehead in solid state NMR. Additionally, we have at use a  MAS-NMR H/X probehead for 4×17 mm rotors ja 4x25mm rotors (currently at an experimental stage), cryoMAS probehead for 1.0mm rotors (operates in temperature ranges of 10K until 300K), a probehead for static samples and single crystal studies between 4.2K and 300K.

AMX 500 (11.7T/51mm) probehead for solution state studies (D/H/C)AVANCE-II 360MHz (8.5T/89mm and 4.7T/89mm); a solid state probehead, made in NICPB, encompassing cryoMAS (10K – 300K) probehead for 1.8×15 mm rotors, high temperature (300-1200K) probehead for static samples and MAS probehead for 10mm rotors.

Terahertz Spectroscopy and Low Temperature Physics facilities

THz spectrometer SPS-200 (3 – 200 cm-1 with 0.3K bolometer) that can be used with two different magnets:

  1. 0 …  +/- 17 T magnet,  that enables the probe temperature to reach the temperature range 2-300K and measurements encompass reflection and transmission (Faraday and Voigt configuration),
  2. 0 … +/- 12T magnet that enables to measure THz transmission in the temperature range of  150 mK kuni 5K.

Bruker Fourier’ spectrometer Vertex 80v, equipped with two sample cryostats (‘cold finger’  5-400K, ‘exchange gas’ 2-300K) and allows for zero magnetic field measurements in the range of 10-50 000 cm-1 and transmission, reflections and ATR spectra.

Toptica Terascan 85O Continuous wave Teraherts Spectroscopy Platform with 2 DL DFB Lasers and GaAs Antennas for the temperature range of 5-400K.

Quantum Design PPMS: 14T magnet and temperature regime of 1.8-400K. Encompasses VSM magnetometer with an oven (kuni 1000K) and enables He-probe heat capacity measurements (down to 300mK), electric and thermal energy transport measurements. Equipped with Magnetic Force Microscopy (MFM).

Brown’s glove box for preparing probes at inert conditions.

Helium station

He liquefier CTi-1410 (1979) with piston detander working with two piston compressors, 20 kW each. Productivity: 20 l liquid He per hour using pure gas and 15 lph using impure recovered gas, which is prepurified during the same procedure.

Cryo Unit provides the maintenance and repairing of cryo and vacuum apparatus and devices as well.

The NICPB Helium station is the only one in the Baltic States and equips the University of Tartu and Tallinn University of Technology with liquid helium.

Optics

Mode-locked femtosecond Titanum Sapphire (Ti:S) laser Mira 900, pumped with 10 W frequency-doubled neodymium-doped vanadate (Nd:YVO4) laser Verdi V-10, both from Coherent, Inc. The laser system generates 100 fs pulses at 76 MHz repetition rate and may be tuned in the spectral range 705 – 975 nm. The Ti:S laser output average power is 0.5 – 1.5 W depending on the wavelength. This laser system is ideally suited for two-photon absorption spectroscopy of organic and biological chromophores.

Quantum Chemistry High Performance Computing Facility (QCHPCF)

HP 32-core server, equipped with two SL250 Intel E5-2660 SMP nodes, two NVIDIA Tesla K20X GPU-s. Total number of CUDA cores 5376.

 

 

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