Effect of Gamma, Beta, Alpha irradiation and effect of Semiconductor laser on Serratia marcescens (in vitro)

Abstract

This work evaluated the effect of gamma , beta ,alpha and Semiconductor laser irradiation on  Serratia marcescens   The experiment  included  a control  and 5 doses of each  gamma , beta and alpha  irradiation ,which ranged(1.317×10^-4 -0.320µSv) and (10.573-96.950µSv) respectively.The total effect of Gamma , Beta and Alpha irradiation on S. marcescens viability was counted after exposure to (¹³⁷Cs , ⁹⁰Sr  ,⁶⁰Co , ²⁴¹Am , ²²Na) isotope for 3 hr.  respectively, the percentage of killing was highly 83%, 85%, 75%, 90%, 82%  respectively . The viable cells was fewer than control (without exposure to irradiation) . This work evaluated also the effect of Semiconductor laser on S. marcescens . experiment included a control and triplicate  exposed to Semiconductor laser in power 5 mW   , in Wavelength 650 nm   . The effect of Semiconductor laser on the viability of S. marcescens was counted and percentage of killing was counted, the number of viable cells of S. marcescenc was fewer than control (without exposure to laser), but percentage of killing was high. Gamma, Beta, alpha irradiation and semiconductor laser was efficient to killing S. marcescens that cause many infection to human.