Inelastic neutron scattering investigation of Greenland ices 

Physica B 276-278, p. 282-283, 2000 

Y. Wang, J.C. Li and A.I. Kolesnikov
Department of Physics, UMIST, P.O. Box 88, Manchester M60 1QD, UK
S. Parker
ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK
S.J. Johnsen
Geofysisk Afdeling, Niels Bohr Instituttet for Astronomi, Fysik og Geofysik, Københavns Universitet

A series of inelastic incoherent neutron scattering scattering measurements were made on TOSCA at ISIS for the Greenland ice core at depths of 200-5500 m which represent the ages of the samples from 1 to 1000 K years. The measurements show that there is no clear difference among the spectra for the Greenland ices at different depths and the normal ice Ih within the statistics and instrumental resolution errors. This result contradicts to a recent report of similar measurements for Antarctic ice core (Fukazawa et al., Chem. Phys. Lett. 294 (1998) 554), where the authors reported the proton ordering in this ice, with the structure similar to ice XI (an ordered form of ice Ih).