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DCS Scientific Opportunities

A broad range of scientific problems can be tackled using the NCNR Disk Chopper Spectrometer. Quick survey experiments, on materials whose microscopic properties are poorly known or completely unknown, may be performed under low resolution conditions but with good intensity. More focused measurements may then be undertaken selecting an instrumental setup appropriate to the problem at hand.

Phenomena that can be investigated include translational and rotational diffusion processes, which provide information about time scales, length scales and geometrical constraints; the ability to access a wide range of wavevector transfers, with good energy resolution, is key to the success of such investigations. Low energy vibrational excitations and densities of states can also be studied, as well as tunneling phenomena.

Materials that can be studied include molecular and porous systems, layered materials, catalysts, glasses, polymers, metal-hydrogen systems, and biological and magnetic systems.

For some examples of applications consult the following reference:
J.R.D. Copley and T.J. Udovic, J. Res. NIST 98, 71 (1993).

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Last modified 15-March-2004 by website owner: NCNR (attn: Bill Kamitakahara)