Title :
High temperature electron localization in dense He gas
Author :
Borghesani, A.F. ; De Riva, A.M. ; Santini, M.
Author_Institution :
Dipt. di Fisica, Padova Univ., Italy
Abstract :
We report measurements of the mobility of excess electrons in high density Helium gas. We investigated extended ranges of temperature [(26⩽T⩽77) K] and density [(0.05⩽N⩽12.0) atoms·nm -3] to ascertain the effect of temperature on the formation and dynamics of localized electron states. The main result of the experiment is that the transition from delocalized to localized states shifts to larger densities as the temperature is increased. This behavior can be understood in terms of a simple model of electron self-trapping in a spherically symmetric square well
Keywords :
electron mobility; helium; localised states; 26 to 77 K; He; delocalized states; dense He gas; electron self-trapping; excess electrons mobility; high temperature electron localization; localized states; spherically symmetric square well; Charge carrier processes; Electron mobility; Gases; Helium; Kinetic theory; Physics; Scattering; Temperature distribution; Thermodynamics;
Conference_Titel :
Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on
Conference_Location :
Nara
Print_ISBN :
0-7803-4759-5
DOI :
10.1109/ICDL.1999.798857
