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FWHM (w) of Fano function
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Origin Ver. and Service Release (Select Help-->About Origin): 2018 Operating System: Windows 10 In my research, I frequently employ a self-defined Fano function to fit asymmetric line shapes. However, I often encounter confusion regarding the FWHM (w). The FWHM value reported by Origin software appears to deviate from the actual width measured at half maximum, particularly for line shapes with large Fano factors (q). For instance, this discrepancy is evident in the curve shown https://www.dropbox.com/scl/fi/wqqg4jriksr9ty6ctniqs/Question-of-FWHM-of-Fano-line-shape.opju?rlkey=5bu1xfpjoqlp6h60a4zxmhcmw&st=j5mnt9lb&dl=0. In addition, the w shown negative in this case. It is also confuse me. I'm seeking guidance on how to accurately determine and interpret the FWHM in these cases.
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