Abstract
The polymerization and depolymerization of liquid sulfur refers, respectively, to the processes of chain growth and chain scission promoted by changing thermodynamic conditions. These structural transitions cause major optical and electrical consequences, including: (1) color change from yellow to orange to red, (2) peaked high angle and low angle scattering and minimum in transmission of He–Ne laser light at the structural changes, (3) a decrease in the current induced by a pulsed ruby laser above the polymerization temperature Tp compared with below Tp, (4) two changes in the sign of the temperature coefficient of resistance in the vicinity of Tp and the depolymerization temperature Td, and (5) superlinear current–voltage characteristics above Td. The data are interpreted as being suggestive of the structure of a liquid being better described by a nonuniformity rather than random network model.
© 1976 Optical Society of America
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