MEASUREMENT OF THE VELOCITY OF CHEMICAL WAVES BY MAGNETIC-RESONANCE-IMAGING

被引：26

作者：

TZALMONA, A

ARMSTRONG, RL

MENZINGER, M

CROSS, A

LEMAIRE, C

机构：

[1] UNIV NEW BRUNSWICK,DEPT PHYS,FREDERICTON E3B 5A3,NB,CANADA

[2] UNIV TORONTO,DEPT CHEM,TORONTO M5S 1A1,ONTARIO,CANADA

[3] UNIV TORONTO,DEPT RADIOL,TORONTO M5S 1A1,ONTARIO,CANADA

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 188卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(92)80848-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new method is established for the measurement of the velocity of chemical waves propagating along a tube and associated with the Belousov-Zhabotinsky (BZ) reaction. By stacking consecutive projections of magnetic resonance images, displacement-time graphs are generated as the output of the imager. The slope at any point on such a graph is the velocity of the associated wave travelling along the tube. For solutions containing agarose, the wave velocity is constant, but in solutions without agarose. abrupt changes of the velocity are observed. Preliminary studies indicate that convective instabilities are responsible for these changes.

引用

页码：457 / 461

页数：5

共 16 条

[1] ONSET OF CONVECTION FOR AUTOCATALYTIC REACTION FRONTS - LATERALLY UNBOUNDED SYSTEM [J].