Dissociation and recombination of positive holes in mineralsThe formation mechanisms are described of positive holes - electronic defects in the O2 sublattice - with attention given to detecting the positive surface charge of minerals with these holes. Charge distribution analysis (CDA) is presented which measures dielectric polarization in an inhomogeneous field. CDA can be applied to the detection of the peroxide/superoxide functionality caused by positive holes on the surface. It is demonstrated with obsidian that the measurements provide data on O(-) mobility as a function of surface-charge carrier density and on O(-) generation as a function of temperature.
Document ID
19920037486
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Freund, Friedemann (NASA Ames Research Center Moffett Field; SETI Institute, Mountain View; San Jose State University, CA, United States)
Batllo, Francois (NASA Ames Research Center Moffett Field, CA, United States)
Freund, Minoru M. (NASA Ames Research Center Moffett Field, CA, United States)