Inelastic neutron scattering and raman light scattering from hydrogen-filled clathrates hydrates
نویسندگان
چکیده
منابع مشابه
Neutron and nuclear inelastic scattering study of the Einstein oscillators in Ba-, Sr-, and Eu-filled germanium clathrates
Raphaël P. Hermann,1,* Werner Schweika,2 Olaf Leupold,3,† Rudolf Rüffer,3 George S. Nolas,4 Fernande Grandjean,1 and Gary J. Long5 1Department of Physics, B5, University of Liège, B-4000 Sart-Tilman, Belgium 2Institut für Festkörperforschung, Forschungzentrum Jülich GmbH, D-52425 Jülich, Germany 3European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France 4Department of Physics, U...
متن کاملTheoretical Analysis of Inelastic Neutron Scattering in Solid Hydrogen
The inelastic-neutron-scattering cross section of ( J=1) solid hydrogen is studied and the experimental data of Stein and co-workers analyzed. The rms displacement ⟨u2⟩1/2 is deduced from the data via different methods and mutually consistent values of order 0.65 Å are obtained. The enhancement of the cross section at the libron energy due to libron-phonon interactions is found to be the same, ...
متن کاملRaman scattering from vibrational modes in Si46 clathrates
Room-temperature Raman-scattering spectra are reported for the type-II superconductors MxBaySi46 ~M 5Na,K! that were recently shown to exhibit Tc’s ;3.5 K. These spectra are compared to those of Na8Si46 and K7Si46 clathrates that exhibit normal metallic behavior down to 2 K. In the Si46 system, fifteen of the eighteen Si related first-order Raman frequencies predicted by group theory have been ...
متن کاملInelastic neutron scattering of hydrogen trapped in solid argon
2014 Molecular hydrogen was isolated in an argon matrix. Its inelastic neutron scattering functions at momentum transfers of 1 to 7 Å-1 were compared with those of solid hydrogen. Both samples show free rotation without line shift. At high momentum transfer (7 Å-1), the spectrum of pure hydrogen is affected by recoil, whereas no recoil effects could be seen in matrix isolated H,. Revue Phys. Ap...
متن کاملDeep Inelastic Scattering from Light Nuclei
For the past 20 years the nuclear EMC effect — the nuclear medium modification of the nucleon structure functions — has posed a serious challenge to models of the nucleus which involve quark degrees of freedom. Although the basic features of the EMC effect can be understood within a conventional nuclear physics framework, a quantitative description over the entire range of Bjorken-x appears bey...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2008
ISSN: 1742-6596
DOI: 10.1088/1742-6596/121/4/042018