Open-Nano Pores in Natural Minerals Studied by Positron Lifetime Spectroscopy
Positron lifetime spectroscopy was conducted for natural minerals to investigate open-nano pores. Positronium (Ps) formation occurs with ortho-positronium (o-Ps) intensities ranging from a few % to 20 % and size distributions of nano pores are evaluated from o-Ps lifetimes. The results will be discussed with respect to formation processes of nano pores influenced by earth's environment.
S. J. Wang, Z. Q. Chen, B. Wang and Y. C. Jean
K. Yoshizawa et al., "Open-Nano Pores in Natural Minerals Studied by Positron Lifetime Spectroscopy", Materials Science Forum, Vol. 607, pp. 189-191, 2009