Journal article
Fractal dissociation dynamics of diatomic ions in a DC field
Physica A, v 221(1), pp 297-313
1995
Abstract
Following our previous work, we carry out a more detailed study of dissociation dynamics of diatomic ions field-evaporated from a metallic tip of field-ion microscopy. We have found that the partial fractal behavior of the dissociation probability near threshold field strength and the multiple peaks in the time-of-flight spectrum can be attributed to different combinations of vibrational and rotational cycles before ions dissociate. But more clear revelation of the origin of the fractal behavior comes from investigating the uniform-field limit, where we show that two types of chaos exist, one is associated with the rotational saddle orbit and the other associated with the moving potential barrier of a DC field-distorted anharmonic oscillator. The homoclinic tangles associated with these saddles give rise to the sensitive dependence of dynamics on initial conditions.
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Details
- Title
- Fractal dissociation dynamics of diatomic ions in a DC field
- Creators
- C.M. Wei - Institute of Physics, Academia SinicaJ.M. Yuan - Drexel UniversityT.T. Tsong - Institute of Physics, Academia Sinica
- Publication Details
- Physica A, v 221(1), pp 297-313
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:A1995TG78500031
- Scopus ID
- 2-s2.0-33744565948
- Other Identifier
- 991019182769504721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Multidisciplinary