Quantum-mechanical versus semiclassical calculations of dc-field-induced tunneling rates for helium for field strengths in the range 0.067-1.0 a.u.

Themelis, SI; Mercouris, T; Nicolaides, CA

dc.contributor.author	Themelis, SI	en
dc.contributor.author	Mercouris, T	en
dc.contributor.author	Nicolaides, CA	en
dc.date.accessioned	2014-03-01T01:50:08Z
dc.date.available	2014-03-01T01:50:08Z
dc.date.issued	2000	en
dc.identifier.issn	1050-2947	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26004
dc.subject.classification	Optics	en
dc.subject.classification	Physics, Atomic, Molecular & Chemical	en
dc.subject.other	DOUBLY-EXCITED-STATES	en
dc.subject.other	NEGATIVE-IONS	en
dc.subject.other	IONIZATION	en
dc.subject.other	COMPUTATION	en
dc.subject.other	HYDROGEN	en
dc.subject.other	ATOMS	en
dc.title	Quantum-mechanical versus semiclassical calculations of dc-field-induced tunneling rates for helium for field strengths in the range 0.067-1.0 a.u.	en
heal.type	journalArticle	en
heal.identifier.secondary	024101	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	The dc-field-induced tunneling rates for He were computed semiclassically and quantum mechanically, the latter case being the result of the application of our previously published nonperturbative theory which accounts for electronic structure, electron correlation, and field-induced effects. As the field strength increases beyond 0.15 a.u., the deviation between the two calculations is enhanced, a phenomenon which is intrinsic to the WKB approximation and is observed explicitly, via the known expressions, in the hydrogen atom.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	PHYSICAL REVIEW A	en
dc.identifier.isi	ISI:000085336900116	en
dc.identifier.volume	6102	en
dc.identifier.issue	2	en