Experimental determination of the lifetime for the 2p3d(1Po) helium doubly excited state (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Experimental determination of the lifetime for the 2p3d(1Po) helium doubly excited state (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Alternative label

• J.G. Lambourne, F. Penent, P. Lablanquie, R.I. Hall, M. Ahmad, M. Zitnik, K. Bucar, M.K. Odling-Smee, J. Harries, P. Hammond, D.K. Waterhouse, S. Stranges, R. Richter, M. Alagia, M. Coreno, M. Ferianis (2003)
  Experimental determination of the lifetime for the 2p3d(1Po) helium doubly excited state
  in Physical review letters (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• J.G. Lambourne, F. Penent, P. Lablanquie, R.I. Hall, M. Ahmad, M. Zitnik, K. Bucar, M.K. Odling-Smee, J. Harries, P. Hammond, D.K. Waterhouse, S. Stranges, R. Richter, M. Alagia, M. Coreno, M. Ferianis (literal)

Pagina inizio

• 153004 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• An international collaboration combined the high resolution of the gas phase beamline built by CNR-IMIP and INFM-TASC, the time structure of teh Elettra storage ring and the efficient fluorescence detection system of the CNRS group to perform accurate lifetime measurements of He doubly excited states. impact factor : 6.668 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 90 (literal)

Rivista

• Physical review letters (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• This work provides the first experimental evidence of the effect of the electric field of the the outer electron on the lifetime of doubly excited states of He. (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1 CNR-IMIP, 2 CNRS-LDAM,3 J. Stephan Institute Slovenia, 4 Phys. Dept, Manchester UK, 5 Phys. Dept. Perth, Au, 6 Dip. Chimica, Università la Sapienza Roma, 7 CNR-ISMN,8 Sincrotrone Trieste (literal)

Titolo

• Experimental determination of the lifetime for the 2p3d(1Po) helium doubly excited state (literal)

Abstract

• Two recent theoretical studies [C. Liu et al., Phys. Rev. A 64, 010501 (2001); M. Zitnik et al., ibid. 65, 032520 (2002)] predict that the fluorescence lifetimes of helium doubly excited states converging to He+ N = 2 should be longer than that of the He+ 2p ion state. This effect is caused by the electric field of the outer electron which, through Stark mixing, gives the inner fluorescing electron some series specific, stabilizing 2s character. We have obtained the first experimental evidence that confirms this effect by measuring the lifetime of the 2p3d(1P0) doubly excited state. This was determined to be 190±30 ps compared to 100 ps for the He+ 2p ion state. The measurements were performed using short pulses of synchrotron radiation to form doubly excited states and recording the arrival time of photons from fluorescence. (literal)

Prodotto di

• Istituto di Nanotecnologia (NANOTEC) (Istituto)
• Dinamica dei processi atomici e molecolari (MD.P03.026.001) (Modulo)

Autore CNR

• MARCELLO CORENO (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Experimental determination of the lifetime for the 2p3d(1Po) helium doubly excited state" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di Nanotecnologia (NANOTEC) (Istituto)
• Dinamica dei processi atomici e molecolari (MD.P03.026.001) (Modulo)

Autore CNR di

• MARCELLO CORENO (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review letters (Rivista)

Insieme di parole chiave di

• Keywords of "Experimental determination of the lifetime for the 2p3d(1Po) helium doubly excited state" (Insieme di parole chiave)