Weakly bound resonances: electronic structure and partial decay widths of a new He- triply excited P-2(o) resonance

Piangos, NA; Nicolaides, CA

dc.contributor.author	Piangos, NA	en
dc.contributor.author	Nicolaides, CA	en
dc.date.accessioned	2014-03-01T01:51:25Z
dc.date.available	2014-03-01T01:51:25Z
dc.date.issued	2001	en
dc.identifier.issn	0953-4075	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26278
dc.subject.classification	Optics	en
dc.subject.classification	Physics, Atomic, Molecular & Chemical	en
dc.subject.other	STATES	en
dc.subject.other	HELIUM	en
dc.subject.other	COMPUTATION	en
dc.subject.other	SPECTRUM	en
dc.subject.other	ENERGIES	en
dc.title	Weakly bound resonances: electronic structure and partial decay widths of a new He- triply excited P-2(o) resonance	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	A novel type of He- triply excited resonance is predicted and calculated accurately. It has P-2(o) symmetry, lies above the well known 2s(2)2p P-2(o) state and is considered as resulting from strong electron correlations in the intrashell state and from weak binding due to long-range interactions of an s electron with a '2s2p' type core. Its energy is less than 5 meV below that of the He 2s2p P-3(o) resonance, and its width is about 9.5 meV. This fact is explained from an analysis of the wavefunction, together with the fact that the distribution of the partial decay widths peaks at the He 1s5s S-1 epsilonp (2)p(o) channel, due to orbital nonorthonormality. The existence of this resonance is in harmony with the 1986 observations of van der Burgt et al (van der Burgt P J M, van Eck J and Heideman H G M 1986 J. Phys. B: At. Mol Phys. 19 2015).	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS	en
dc.identifier.isi	ISI:000172118300002	en
dc.identifier.volume	34	en
dc.identifier.issue	19	en
dc.identifier.spage	L633	en
dc.identifier.epage	L643	en