Weakly bound resonances: Electronic structure and partial decay widths of a new He- triply excited2Po resonance

Piangos, NA; Nicolaides, CA

dc.contributor.author	Piangos, NA	en
dc.contributor.author	Nicolaides, CA	en
dc.date.accessioned	2014-03-01T01:17:19Z
dc.date.available	2014-03-01T01:17:19Z
dc.date.issued	2001	en
dc.identifier.issn	09534075	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14454
dc.subject.other	Electron energy levels	en
dc.subject.other	Electronic structure	en
dc.subject.other	Helium	en
dc.subject.other	Negative ions	en
dc.subject.other	Wave equations	en
dc.subject.other	Wavefunctions	en
dc.subject.other	Electron resonance	en
dc.title	Weakly bound resonances: Electronic structure and partial decay widths of a new He- triply excited2Po resonance	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0953-4075/34/19/102	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0953-4075/34/19/102	en
heal.publicationDate	2001	en
heal.abstract	A novel type of He- triply excited resonance is predicted and calculated accurately. It has2Po symmetry, lies above the well known 2s22p2Po 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 2s2p3Po resonance, and its width is about 9.5 me V. 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 1s5s1S εp2Po 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.journalName	Journal of Physics B: Atomic, Molecular and Optical Physics	en
dc.identifier.doi	10.1088/0953-4075/34/19/102	en
dc.identifier.volume	34	en
dc.identifier.issue	19	en
dc.identifier.spage	L633	en
dc.identifier.epage	L643	en