Search

low temperatures on a four-circle neutron diffractometer ", Allibon J.R., Filhol A., Lehmann M.S., Mason S.A. and Simms P., J. Appl. Crys. 14 , 326-328 (1981). " Cooling to 10 K on a four-circle diffractometer ... ter by means of a double-stage cryorefrigerator ", Filhol A., Reynal J.M., Savariault J.M., Simms P., Thomas M. (1980) J. Appl. Cryst. ...

determined using a low-background neutron counter (5). For all spin-dependent searches, the whole setup was surrounded by coils (6a) producing a homogeneous guide field. Furthermore, a detector with a spin-analyzing ... we can exclude a broad range of parameters.” The measurements determine a new limit for the coupling strength, which is lower than ...

refills are easily managed with a process controller ( Eurotherm model 3504 ). Intuitive interface The unit displays permanently the liquid helium level with a bar graph and a number that are visible quite ... manually a refill. The message "Refilling..." is displayed when filling. When the low level is reached, an alarm is displayed in red and a ...

m. He was a scientist of personality and influence and played a major role in the birth and successful development of research in Grenoble. With other French and German scientists, he made a major contribution ... diffraction of x-rays, synchrotron light, electrons and neutrons. Max von Laue was a strong objecter to National Socialism and played a ...

paid a monthly shift allowance. Similarly, for certain specific working conditions you are entitled to a heavy work allowance. Long-service bonus Your commitment to the Institute is rewarded with a long-service ... or ending your career at the ILL, it is important that you find a personal sense of meaning and purpose while working at the heart of a ...

states in a gravitational field A.Filhol, F.Gorgé, V.Nesvizhevky, 19/04/2018 CYCLOPS low temperature A. Filhol, 27/04/2018 Reflectometry principle 1 A. Filhol - 14/05/2018 Reflectometry principle 2 A. Filhol ... 14/05/2018 TOF principle A. Filhol - 18/01/2016 SANS principle A. Filhol - 20/11/2016 Dispersion curves (html - 1.09 Ki) A.Filhol - ...

guide H16 is turned into a pulsed monochromatic beam by a set of 6 choppers. the monochromatic neutron bursts are inelastically scattered by the sample, either a liquid, a powder or a single crystal. the scattered ... spectrometer work? IN5 is a typical direct geometry neutron Time-of-flight (ToF) spectrometer. This high precision instrument is ...

one of its five take-off ports, each offering a different instrument resolution. It then reaches the sample (usually a cylinder of powder in a furnace or in a cryostat) which diffracts it in many directions ... by the large microstrip multidetector. The counts are accumulated during a certain time to give a powder diffraction pattern with a ...

Calibration A very simple detector efficiency calibration consists simply in measuring a vanadium or a plexiglass sample to obtain a nearly flat background. A Two-Theta scan has to be performed to obtain a the ... not monitor-controlled. You may perform a simple acquisition, a scan or a coupled scan (moving one or two motors between the steps of a ...

measurable Q z to approximately 0.20 to 0.25 A -1 for samples with 5-A rms roughness. Typical counting times using 80x50 mm crystals, 7% wavelength resolution and a 20-A frame overlap mirror are 45 min in D 2 ... measurements over the whole Q-range (0.005-0.4 A -1 ) in a D2O subphase can be measured in as little as 2 min. These counting times apply ...