Details
| Original language | English |
|---|---|
| Pages (from-to) | 4317-4322 |
| Number of pages | 6 |
| Journal | Journal of Chemical Physics |
| Volume | 105 |
| Issue number | 10 |
| Publication status | Published - 8 Sept 1996 |
Abstract
Target patterns, rotating spiral waves and solitary pulses have been found in the NO+H2 reaction under nonoscillatory conditions, i.e., when the system was an excitable medium. Using photoelectron emission microscopy (PEEM) as spatially resolving method the parameter dependence of the front velocities, the width of the pulses and the rotational period of the spiral waves were studied for fixed pNO= 1.8 × 10-6 mbar in a T- range 520-620 K. The front velocities were strongly anisotropic with the degree of anisotropy depending on the pH2 T parameters. Under reaction conditions close to the high pH2 boundary for pattern formation, gas-phase coupling becomes efficient, thus, oscillations in the N2 production rate can be observed.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Chemical Physics, Vol. 105, No. 10, 08.09.1996, p. 4317-4322.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Pulse propagation and oscillatory behavior in the NO+H2 reaction on a Rh(110) surface
AU - Mertens, F.
AU - Imbihl, R.
PY - 1996/9/8
Y1 - 1996/9/8
N2 - Target patterns, rotating spiral waves and solitary pulses have been found in the NO+H2 reaction under nonoscillatory conditions, i.e., when the system was an excitable medium. Using photoelectron emission microscopy (PEEM) as spatially resolving method the parameter dependence of the front velocities, the width of the pulses and the rotational period of the spiral waves were studied for fixed pNO= 1.8 × 10-6 mbar in a T- range 520-620 K. The front velocities were strongly anisotropic with the degree of anisotropy depending on the pH2 T parameters. Under reaction conditions close to the high pH2 boundary for pattern formation, gas-phase coupling becomes efficient, thus, oscillations in the N2 production rate can be observed.
AB - Target patterns, rotating spiral waves and solitary pulses have been found in the NO+H2 reaction under nonoscillatory conditions, i.e., when the system was an excitable medium. Using photoelectron emission microscopy (PEEM) as spatially resolving method the parameter dependence of the front velocities, the width of the pulses and the rotational period of the spiral waves were studied for fixed pNO= 1.8 × 10-6 mbar in a T- range 520-620 K. The front velocities were strongly anisotropic with the degree of anisotropy depending on the pH2 T parameters. Under reaction conditions close to the high pH2 boundary for pattern formation, gas-phase coupling becomes efficient, thus, oscillations in the N2 production rate can be observed.
UR - http://www.scopus.com/inward/record.url?scp=6744268786&partnerID=8YFLogxK
U2 - 10.1063/1.472248
DO - 10.1063/1.472248
M3 - Article
AN - SCOPUS:6744268786
VL - 105
SP - 4317
EP - 4322
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 10
ER -