Atomic Quadrupolar Photoemission Asymmetry Parameters from a Solid State Measurement
GDF JacksonPhysics Department, University of Warwick, Coventry CV4 7AL, United KingdomBruce C. C. CowieCCLRC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United KingdomD.P. WoodruffPhysics Department, University of Warwick, Coventry CV4 7AL, United KingdomRobert G. JonesSchool of Chemistry, University of Nottingham, Nottingham NG7 2RD, United KingdomMuhammed S.T. KariapperPhysics Department, King Fahd University of Petrochemicals and Minerals, Dhahran, Saudi ArabiaCraig A. FisherPhysics Department, University of Warwick, Coventry CV4 7AL, United KingdomA. S. Y. ChanSchool of Chemistry, University of Nottingham, Nottingham NG7 2RD, United KingdomM. T. ButterfieldPhysics Department, Loughborough University, Loughborough, United Kingdom
2000en
ABI
Аннотация
A method for measuring the asymmetry parameter gamma arising from dipole-quadrupole interference in core-level photoemission is proposed which is based on condensed thin films and exploits the influence of this asymmetry in photoemission monitoring of x-ray standing wave field absorption. The high density of material in this method offers some advantages over a conventional gas-phase measurement. Results are presented for C, O, and F 1s photoemission at photon energies around 3 keV. The combined nondipole asymmetry factor (delta+gamma/3) for non- s-states can be determined in a similar way.
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