An alternative indicator of annihilated electrons in atoms: Rahm's electronegativity scale

• DOI: 10.1016/j.physleta.2021.127324
• Publication Date: 2021-03-26T22:47:08Z
• Authors: Yu Wu; Xiaoguang Ma; Fang Yuan; Jipeng Sui; Meishan Wang; Chuanlu Yang
• Keywords: Electronegativity; Annihilation; Valence electron

This paper presents a new explanation of the width of gamma-ray spectra based on Rahm's electronegativity scale. This quantitatively proves, for the first time, that positrophilic electrons in the positron-electron annihilation process are exactly the valence electrons. This suggests the replacement of Full Width at Half Maximum (FWHM) of the gamma-ray spectra with the newly defined physical quantity Average Doppler Shift (ADS). Both FWHM and ADS of the gamma-ray spectra in light elements agree well with the corresponding Rahm's electronegativity values, respectively. Further, ADS provides strong evidence in favor of Rahm's electronegativity scale. It is expected that this will be useful in understanding the mechanism of the positron-electron annihilation process.