Recherche

Å -1 0.09-1.3 Å -1 0.09-0.8 Å -1 3.8% 3% 2.7% 0.03 83.6 meV 2 m 4 m 6 m ± 80 ± 70 ± 60 1° - 15° 1° -15° 1° - 9° 0.1-1.7 Å -1 0.1-1.7 Å -1 0.1-1.0 Å -1 4.5% 3.2% 3.1% 0.04 ** Please ask the instrument ... (Å -1 ) 20.9 meV 2 m 4 m 6 m ± 18 ± 14 ± 12 1° - 15° 1° - 15° 1° - 9° 0.05-0.8 Å -1 0.05-0.8 Å -1 0.05-0.5 Å -1 3% 2.9% 2.4% 0.02 49.9 meV 2 m 4 ...

company), France Dry cryogen-free Ultra-quiet technology cold stages at 50K, 4K, 1K, 100 mK and 10 mK 10 mK stage holds the detector 1 K stage holds cold shielding & cold-front end electronics Vibrations must ... leading to a neutrino flux at the Ricochet detectors 8.8 m from the reactor core of about 1.2×10 12 cm −2 s −1 . The reactor is operated ...

cryostat 1.5 K to 300 K Cryofurnace 1.5 K to 550 K Cryomagnet 1.5 K to 300 K, up to 10 T Furnace 300 K to 1200 K Paris-Edinburgh cell 5 K to 300 K, up to 20 GPa Clamp cell 1.5 K to 300 K, up to 1 GPa Instrument ... Characteristics Guide hall 1, thermal guide H242 Monochromators Variable horizontal and vertical focussing HOPG (002) 2.36 < λ < 2.5, ...

δλ/λ = 20%) ~1 x 10 8 n cm -2 s -1 Detector Cylindrical drum with internal neutron-sensitive image plates and read/erase system Neutron image plate Gd 2 O 3 doped BaF(Br.I):Eu 2+ Radius 160 mm Length 400 ... Guide hall n°1, cold guide H141 Data Collection Method Quasi-Laue Neutron velocity selector Choice of mean neutron λ 3.5 to 4.5 Collimation ...

Graphite(006) 67.5-171 meV Cu(220) 52-130 meV Cu(331) 123-150 meV Choppers Fermi chopper max 20000 rpm 1.5 degrees slit package Background choppers max 10000 rpm 6 slits of width 105 mm Phase space coverage

. 6 ns (7 Å) 0.6 ps ...0.6 ns (3.2 Å) Momentum transfer range 0.05 ... 1.1 Å -1 (10 Å) 0.07 ... 1.6 Å -1 (7 Å) 0.15 ... 3.6 Å -1 (3.2 Å) Instrument description Neutron spin-echo spectroscopy measures the

30 (Ei= 8 meV) With standard focusing conditions the momentum resolution δ|Q| is about δ|Q| ≈ 0.02 Å-1. If needed, δ|Q| can be considerably enhanced by beam collimation with compromises in neutron flux.

polarized) 6×10 5 n s -1 cm -2 6×10 6 n s -1 cm -2 (expected value) flux (polarized) 3.2×10 5 orientation horizontal scattering plane Sample environment magnetic field up to 1.1T (optional 7T cryomagnet) ... detector distance to sample (variable) 1.1 - 6 m background (beam closed) 5 cts per minute 2 dim. position sensitive 3 He detector distance to ...

[220] skew symmetric interferometer at 1.84 Å with beam area 1x1 cm 2 flux in front of interferometer 16000 n cm -2 s -1 flux in O-bean and H-beam 7000 n cm -2 s -1 contrast in O-beam 90% wavelength spread ... reflection with tail suppression peak intensity 10000 n cm -2 s -1 angular resolution 0.01 sec arc momentum resolution 1.5 · 10 -5 Å -1 ...

10 14 n cm -2 s -1 horizontal aperture 2β ≤ 2.3° vertical aperture 2α ≤ 0.57° solid angle W ≤ 3.2 10 -5 sr total length of main path 23 m length of exit slit 72 cm mass dispersion for 1 % mass difference ... radius of deflection 0.6 m length of parabola to be focussed 40 cm distance magnet- focus 1.05 m size of image < 1 x 6 cm 2 Ionization chamber ...