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Fluorescence study of doubly excited states of molecular hydrogen
KTH, Skolan för teknikvetenskap (SCI), Fysik, Atom- och molekylfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Atom- och molekylfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik.ORCID-id: 0000-0001-7389-5501
Vise andre og tillknytning
2006 (engelsk)Inngår i: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 39, nr 2, s. 205-213Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Photodissociation of molecular hydrogen has been investigated by means of fluorescence spectroscopy using synchrotron radiation. Balmer-alpha emission from atomic hydrogen photofragments was collected in the 20-55 eV excitation energy range. Experimental data are interpreted in terms of excitation and fragmentation of neutral doubly excited states and excited ionic states with the aid of recent theoretical model calculation.

sted, utgiver, år, opplag, sider
2006. Vol. 39, nr 2, s. 205-213
Emneord [en]
dissociative photoionization, autoionizing states, h-2, photodissociation, fragments, dynamics, series, h2
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-5536DOI: 10.1088/0953-4075/39/2/001ISI: 000235457800004Scopus ID: 2-s2.0-29144513913OAI: oai:DiVA.org:kth-5536DiVA, id: diva2:9933
Merknad

QC 20100910

Tilgjengelig fra: 2006-04-05 Laget: 2006-04-05 Sist oppdatert: 2017-11-21bibliografisk kontrollert
Inngår i avhandling
1. Synchrotron radiation spectroscopy of molecular dynamics beyond the valence shell
Åpne denne publikasjonen i ny fane eller vindu >>Synchrotron radiation spectroscopy of molecular dynamics beyond the valence shell
2006 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

This thesis presents experimental results on molecular spectroscopy of gas phase molecules using synchrotron radiation. It deals mainly with dynamical processes following resonant excitation of electrons from core and inner-valence shells of the following systems H2O, H2, SF6 and CD4. In order to reach these deep electrons and excite them photons in the energy range from 25 to 550 eV were used, depending on the particular system.

Two experimental techniques are used. Photon induced fluorescence spectroscopy is used to study the fluorescence emission of fragments after the decay of resonant coreexcited states for the water molecule, and after doubly excited states and resonant excitations of inner-shell electrons for H2 and SF6 respectively. Only the emission in the visible and near infrared range (300-900nm) and the Lyman-α transitions are measured. Energy resolved electron-ion coincidence is used for the study of the fragmentation of CD4 and SF6 after selective ionisation of one of the outer-valence orbitals. In the case of CD4 the fragmentation is compared for the cases in which the ionisation is done directly, or through participator Auger decay of different resonantly core-excited states.

sted, utgiver, år, opplag, sider
Stockholm: KTH, 2006. s. xiv, 59
Serie
Trita-FYS, ISSN 0280-316X ; 2006:13
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-3899 (URN)91-7178-294-X (ISBN)
Disputas
2006-04-20, Sal FB 53, AlbaNova, Roslagstullsbacken 21, Stockholm, 10:00
Opponent
Veileder
Merknad
QC 20100910Tilgjengelig fra: 2006-04-05 Laget: 2006-04-05 Sist oppdatert: 2010-09-10bibliografisk kontrollert

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