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Sökning: WFRF:(Prümper G.) > (2006) > Young's double-slit...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003507naa a2200529 4500
001oai:DiVA.org:kth-16189
003SwePub
008100805s2006 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-161892 URI
0247 a https://doi.org/10.1088/0953-4075/39/23/0012 DOI
040 a (SwePub)kth
041 a engb engb -1
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Liu, X. J.4 aut
2451 0a Young's double-slit experiment using core-level photoemission from N-2 :b revisiting Cohen-Fano's two-centre interference phenomenon
264 c 2006-11-10
264 1b IOP Publishing,c 2006
338 a print2 rdacarrier
500 a QC 20100525
520 a The core-level photoelectron spectra of N-2 molecules are observed at high energy resolution, resolving the 1 sigma(g) and 1 sigma(u) components as well as the vibrational components in the extended energy region from the threshold up to 1 keV. The sigma(g)/sigma(u) cross section ratios display modulation as a function of photoelectron momentum due to the two-centre interference, analogous to the classical Young's double-slit experiment, as predicted by Cohen and Fano a long time ago. The Cohen-Fano interference modulations display different phases depending on the vibrational excitations in the core-ionized state. Extensive ab initio calculations have been performed within the Hartree-Fock and random phase approximations in prolate spheroidal coordinates. The dependence of photoionization amplitudes on the vibrational states was taken into account using the Born-Oppenheimer approximation. The ab initio results are in reasonable agreement with the experimental data. The theoretical analysis allows the modulation to be connected with the onset of transitions to the states of increasing orbital angular momentum which occurs at increasing photon energies. Deviation from the Cohen-Fano formula is found for both the experimental and the ab initio results and is attributed to electron scattering by the neighbouring atom. A new formula for the interference modulation is derived within the framework of the multiple scattering technique. It differs from the classical Cohen-Fano formula by the addition of twice the scattering phase of the photoelectron by the neighbouring atom. We demonstrate that one can measure directly the scattering phase by fitting our formula to the experimental results.
520 a 
653 a vibrationally resolved photoionization
653 a photochemistry beamline bl27su
653 a absorption fine-structure
653 a k-shell
653 a photoelectron-spectrum
653 a molecule
653 a scattering
653 a spectroscopy
653 a 1-sigma(g)
653 a ionization
7001 a Cherepkov, N. A.4 aut
7001 a Semenov, S. K.4 aut
7001 a Kimberg, V.4 aut
7001 a Gel'mukhanov, Farisu KTH,Teoretisk kemi4 aut0 (Swepub:kth)u1tlrmzw
7001 a Prumper, G.4 aut
7001 a Lischke, T.4 aut
7001 a Tanaka, T.4 aut
7001 a Hoshino, M.4 aut
7001 a Tanaka, H.4 aut
7001 a Ueda, K.4 aut
7102 a KTHb Teoretisk kemi4 org
7730 t Journal of Physics Bd : IOP Publishingg 39:23, s. 4801-4817q 39:23<4801-4817x 0953-4075x 1361-6455
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-16189
8564 8u https://doi.org/10.1088/0953-4075/39/23/001

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