Sample interview questions: How do you approach the analysis of experimental data obtained from electron scattering experiments?
Sample answer:
Data Analysis Approach for Electron Scattering Experiments
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Initial Data Inspection: Examine raw data for noise, outliers, or any potential experimental artifacts.
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Background Subtraction: Remove background contributions from scattering measurements using appropriate methods, such as subtracting a non-sample region or fitting a background model.
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Peak Identification and Fitting: Identify and quantify elastic and inelastic scattering peaks using appropriate peak fitting techniques. Extract information such as scattering intensities, energies, and widths.
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Cross-Section Calculation: Convert measured intensities into differential and total scattering cross-sections using known or calibrated experimental parameters.
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Data Modeling: Develop theoretical models to describe the observed scattering behavior. Adjust model parameters to obtain best fits and extract atomic or molecular structure information, such as electron densities, excitation energies, and ionization thresholds.
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Systematic Error Analysis: Estimate and quantify systematic uncertainties in experimental parameters and data analysis procedures to ensure the reliability of the results.
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Statistical Uncertainty Analysis: Determine the statistical uncertainties associated with measurements and fitting parameters. Use statistical methods to assess the significance of data and co… Read full answer