INHOMOGENEOUS PRECIPITATION PATTERNS IN A CHEMICAL WAVE .7.

Authors
HAUSER MJB SIMOYI RH
Citation
Mjb. Hauser et Rh. Simoyi, INHOMOGENEOUS PRECIPITATION PATTERNS IN A CHEMICAL WAVE .7., Physics letters. A, 191(1-2), 1994, pp. 31-38
Citations number
30
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
191
Issue
1-2
Year of publication
1994
Pages
31 - 38
Database
ISI
SICI code
0375-9601(1994)191:1-2<31:IPPIAC>2.0.ZU;2-T
Abstract
Inhomogeneous BaSO4-precipitation patterns are observed in the travell ing wave generated in the bistable chlorite-thiourea-barium chloride r eaction system. At the wave-front SO42- is formed and detected as BaSO 4 which precipitates inhomogeneously in the region behind the front. T hese inhomogeneous patterns can be attributed to the formation of dens e crystals in the upper solution layer which induce complex three-dime nsional convective, and reaction-diffusive motions. The wave propagate s with rapid variations in velocity. The inhomogeneous precipitation p atterns are annihilated upon a sharp deceleration of the wave.