Method of measurements with random perturbation: Application in photoemission experiments

Details Method of measurements with random perturbation: Application in photoemission experiments Method of measurements with random perturbation: Application in photoemission experiments

2007-10-30

arxiv.org/abs/0710.5584v1

Physics

Mathematical Physics

11 pages, 3 figures

Scientific paper

10.1063/1.2890515

We report an application of a simultaneous perturbation stochastic approximation (SPSA) algorithm to filtering systematic noise (SN) with non-zero mean value in photoemission data. In our analysis we have used a series of 50 single-scan photoemission spectra of W(110) surface where randomly chosen SN was added. It was found that the SPSA-evaluated spectrum is in good agreement with the spectrum measured without SN. On the basis of our results a wide application of SPSA for evaluation of experimental data is anticipated.

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