【摘要】 利用充氧气的气凝硅胶电子偶素源,用与已知的¹⁰⁶Ruγ射线能量511856.2（2.3）eV相比较的方法,测得仲态电子偶素湮没2γ射线的能量为510998.7（2.5）eV,将此数值（经结合能修正）与电子静止质量所对应的能量（m_ec²）进行了比较。更多还原

【Abstract】 Using a silica aerogel sample with oxygen gas introduced as the positronium source, the γray energy from the parapositronium 2γ annihilation has been measured as 510998.7 （2.5） eV bymeans of the comparison with the known γ energy 511856.2 （2.3） eV of the ¹⁰⁶Ru γ ray. The re-sult, after a revision of the binding energy of positronium, is comparied with the adjusted valueof the electron rest mass published in several years ago.更多还原