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Experiments and instruments

A series of short movies showing how neutron experiments are prepared or performed. Some of these movies have an historical interest since they captured important moments in the life of the ILL.

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Films and animations

D10

A neutron 4-circle diffractometer equiped with a dilution cryostat with helium circulation

The neutron diffractometer D10 is a four circle diffractometer with optional energy analysis as on three axis spectrometers.
It also includes a unique four circle dilution cryostat capable of cooling a crytal sample to 65 mK. This functions independently of gravity, and allows the crystal within to be fully orientable in the beam with a range of complex rotationsThe techniques used is similar to that now used on cryostats carried on high-altitude balloons and satellites.

The video below was recorder in 2001. It first shows the installation of a sample in the dilution cryostat of D10 and then the movements of the diffractometer and the cold stage of the cryostat.


Ref.: G.J. McIntyre, B. Ouladdiaf, C.M.E. Zeyen, F. Thomas, A. Benoît, S. Pujol (2001) Proceedings ILL Millennium, 6-7 April, Grenoble, France.

Download Video : WebMMP4

Movie by Alain Filhol.

©2001-2007 Institut Laue-Langevin, Grenoble, France.

Movie files (768x576 pixels, duration: 74"): .mp4 (18.1 Mb), .webm (13.6 Mb).
Movie files (640x480 pixels, duration: 74"): .mp4 (6.8 Mb), .webm (9.3 Mb).

The setting used for the neutron radiography.

How it works

The second movie is a neutron radiograph film recorded at the ILL in 2005 on NEUTROGRAPH. It shows the progressive dilution of helium-3 into helium-4 inside a capillary which is at the heart of ultra-low temperature space cryostats. These observations in situ is possible only using neutrons where there is a marked isotopic effect for helium (helium-4 is transparent, helium-3 is opaque to neutrons).


Ref.: M. Enderle, S. Pujol, A. Hillenbach (Institut Laue-Langevin), A. Benoit (CRTBT CNRS) (2005) private communication.

Download Video : WebMMP4

Movie files (96x320 pixels, duration 6.7"): .mp4 (0.3 Mb), .webm (0.3 Mb).

©2005-2007 Institut Laue-Langevin, Grenoble, France.
English checked by: Ronen Ghosh, April 2007.
Update: A.Filhol, 13 Oct 2008, 8 Sept 2009, 18 April 2012.

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