Mean square displacement evaluation by elastic neutron scattering self-distribution function.
In the present work an operational recipe for the mean square displacement (MSD) determination, highlighting the connection between elastic incoherent neutron scattering (EINS) intensity profiles and the associated self-distribution function, is presented. The determination of the thermal behavior of the total MSD and of its partial contributions is tested on EINS data collected by the backscattering spectrometer IN13 (ILL, Grenoble) on a model system such as PolyEthylene Glycol with a mean molecular weight of 400 Dalton (PEG 400).
Magazù
Salvatore
S
Dipartimento di Fisica and CNISM, Università di Messina, PO Box 55, I-98166 Messina, Italy. smagazu@unime.it
Maisano
Giacomo
G
Migliardo
Federica
F
Benedetto
Antonio
A