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Reactor hall, thermal beam H12 Monochromators PG 002: 2.20 ... 3.60 Å PG 004: 1.10 ... 1.80 Å Cu 220: 0.85 ... 1.50 Å Cu 111: 1.25 ... 2.24 Å take-off angle 2θM 39 ° ... 65° resolution δ> E i / E i 3

iron(II)-imidazole complexeGeometry of the [Fe(Im)6]2+ cation in the Fe(Im)6(NO3)2 salt as determined by X-ray diffraction. iron(II)-imidazole complexeSimplified diagram of the electronic splitting of

A general view of the instrument The photo shows the location of IN4C in the reactor hall. The instrument itself is hidden below a heavy concret shielding.

Besides test experiments the main task of IN3 is checking new instrument ideas for three axis spectroscopy.

IN4C - High-flux time-of-flight spectrometer IN4C is a high-flux time-of-flight spectrometer used for the study of excitations in condensed matter. It works in the thermal neutron energy range (10-100

Guide hall n° 1, thermal guide H24 beam cross section 30 x 75 mm 2 Monochromator crystal d -spacing in Å k i in Å -1 flux in 10 6 n cm -2 s -1 PG (002) 3.355 1.3 - 3.3 2.662 9.3 Cu (111) 2.087 2.0 - 5

(gif - 186 Ki) The GRID technique in shortThe animation shows typical simulated trajectories of recoiling atoms and the corresponding Doppler broadened gamma-ray lineshape. Two different orientations

Instrument layout

Reactor hall, through-tube H6-H7 Neutron Flux: 5 x 10 14 n cm -2 s -1 Available Crystals: Flat Si (220) Ge (111) Ge (220) Bent Si (220) Ge (220) Eff. Solid Angle: Flat: ~ 10-11 sr Bent: ~ 10-7 sr Best