Nonhyperbolic escape and changes in phase-space stability structures in laser-induced multiphoton dissociation of a diatomic molecule

Constantoudis, V; Nicolaides, CA

dc.contributor.author	Constantoudis, V	en
dc.contributor.author	Nicolaides, CA	en
dc.date.accessioned	2014-03-01T01:16:47Z
dc.date.available	2014-03-01T01:16:47Z
dc.date.issued	2001	en
dc.identifier.issn	1063-651X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14225
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035510376&partnerID=40&md5=e5bc35f275a1d1cf180df86e5d835cbd	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035510376&partnerID=40&md5=e5bc35f275a1d1cf180df86e5d835cbd	en
dc.subject.classification	Physics, Fluids & Plasmas	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	Atoms	en
dc.subject.other	Convergence of numerical methods	en
dc.subject.other	Fractals	en
dc.subject.other	Hamiltonians	en
dc.subject.other	Integral equations	en
dc.subject.other	Laser beam effects	en
dc.subject.other	Molecular structure	en
dc.subject.other	Phase space methods	en
dc.subject.other	Quantum theory	en
dc.subject.other	Diatomic molecule	en
dc.subject.other	Kolmogorov-Arnold-Moser tori	en
dc.subject.other	Phase space stability	en
dc.subject.other	Resonance stability	en
dc.subject.other	Photodissociation	en
dc.title	Nonhyperbolic escape and changes in phase-space stability structures in laser-induced multiphoton dissociation of a diatomic molecule	en
heal.type	journalArticle	en
heal.identifier.secondary	056211	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The dependence of photodissociation of a diatomic molecule (vibrating according to the Morse potential) on the frequency of the laser field that induces it, is studied in the context of classical nonlinear dynamics. First., it is observed that as the laser frequency increases towards the harmonic frequency of the potential, a transition from stabilization due to Kolmogorov-Arnold-Moser tori to stabilization caused by the resonance stability island occurs. Then. considering the photodissociation as a nonhyperbolic half-scattering process, we investigate the influence of these changes in the phase space stability structures on dissociation dynamics via the examination of the fractal set of singularities appearing in the time-delay function of the initial state. It is found that the effective fractal dimension of this set (a finite-scale approximation of the exact dimension which is always equal to 1) and the percentage of its singularities provide a link between these changes and the dissociation rate.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics	en
dc.identifier.isi	ISI:000172407100062	en
dc.identifier.volume	64	en
dc.identifier.issue	5 II	en
dc.identifier.spage	056211/1	en
dc.identifier.epage	056211/6	en