TY - JOUR
T1 - Spectral momentum densities in matter determined by electron scattering
AU - Weigold, Erich
AU - Kheifets, Anatoli S.
AU - Sashin, Vladimir A.
AU - Vos, Maarten
PY - 2004/3
Y1 - 2004/3
N2 - In electron momentum spectroscopy (EMS), an incoming energetic electron (50 keV in this work) ionizes the target and the scattered and ejected electrons are detected in coincidence (at energies near 25 keV). From the energy and momentum of the detected particles, the energy ω and momentum q transferred to the target can be inferred. The observed intensity distribution I(ω, q) is proportional to the spectral momentum density of the target and hence provides a direct challenge to many-body theoretical descriptions of condensed matter. This is illustrated by comparing some many-body calculations with EMS measurements on graphite and polycrystalline aluminium.
AB - In electron momentum spectroscopy (EMS), an incoming energetic electron (50 keV in this work) ionizes the target and the scattered and ejected electrons are detected in coincidence (at energies near 25 keV). From the energy and momentum of the detected particles, the energy ω and momentum q transferred to the target can be inferred. The observed intensity distribution I(ω, q) is proportional to the spectral momentum density of the target and hence provides a direct challenge to many-body theoretical descriptions of condensed matter. This is illustrated by comparing some many-body calculations with EMS measurements on graphite and polycrystalline aluminium.
UR - http://www.scopus.com/inward/record.url?scp=19944399097&partnerID=8YFLogxK
U2 - 10.1107/S0108767303029349
DO - 10.1107/S0108767303029349
M3 - Article
SN - 0108-7673
VL - 60
SP - 104
EP - 110
JO - Acta Crystallographica Section A: Foundations of Crystallography
JF - Acta Crystallographica Section A: Foundations of Crystallography
IS - 2
ER -