How may COVID-19 viral membrane resist when exposed radiation to treatment : effects on Phospholipids and cholesterol

In this report, we have investigated the ability of the essential phospholipids and cholesterol found viral membrane of SARS-COV-2 to protect it from the radiation exposure. The applied mehod was Geometric Progression fitting procedure to obtained numerically the atomic number equivalenace (Z eq ), for any photon energy absorption exposure (EBF) and absorption (EABF) buildup factors. The used energy range E ∈ [0.015,15] MeV up to an ultimate penetration length of 40 mpf for viral membrane essential components phospholipids and cholesterol. Most importantly, the calculated Z eq values were found to vary with incident photon energy and phospholipids compositions. Also, both EBF and EABF were depend strongly on the photon energy and penetration depths. For phospholipids, these two factors almost coincide in the energy range studied while it slightly different for cholesterol. At energies < 150 keV , both buildup factors were found to to inversely proportional to Z eq values of the phospholipids and cholesterol. The buildup factors EABF and EBF were found to be larger for cholesterol than other phospholipids at nearly 60 keV for COVID-19 viral membrane. The above results have shown that the viral membrane can resist the radiation effects and prevent the coronavirus form being inactivated when exposed to γ- or X-rays radiotherapy treatment in medical trails except for a specific radiation energy depending on the mfp (i.e., 60 keV at 5 mfp).