The reactions of CS(X(1)A(1)) radicals with O(P-3) and H atoms have been studied by using a shock tube/atomic resonance absorption spectroscopy technique over the temperature ranges 2000-2430 and 1450-1860 K and the total density range 6.1 x 10(18) to 1.2 x 10(19) molecules cm(-3). Nitrous oxide and ethyl iodide were used as precursors of O(P-3) and H atoms, respectively. Electronically ground state CF2(X(1)A(1)) radicals were produced through the thermal decomposition of chlorodifluoromethane. The rate coefficients for the reactions CF(2()X(1)A(1)) + O(P-3) and CF2(X(1)A(1)) + H were obtained from the decay profiles of O and H atom concentrations as k(CF2+O) = 10(-10.39+/-0 07) and k(CF2+H) = 10(-10.18+/-0.21) exp[-(19.0 +/- 6.7) kJ mol(-1)/RT] cm(3) molecule(-1) s(-1) terror limits at the two standard deviation level). Neither rate coefficient had any pressure dependence under the present experimental conditions. The G2-level ab initio molecular orbital calculation was also performed to examine the product channels for the CF2(X(1)A(1)) + O(P-3) and CF2(X(1)A(1)) + H reactions. The theoretical calculation showed that the most energetically favorable pathways for CF2(X(1)A(1)) + O(P-3) and CF2(X(1)A(1)) + H systems were the channels producing FCO + F and CF + HF, respectively. The G2 energy of the transition state for the channel CF2(X(1)A(1)) + O(P-3) - FCO + F was 116 kJ mol(-1) lower than that of the reactants CF2(X(1)A(1)) + O(P-3), while the energy of the three-centered transition state for the channel CF2(X(1)A(1)) + H - CF + HF is 45 kJ mol(-1) higher than that of the reactants CF2(X(1)A(1)) + H. These results could qualitatively explain the difference of the temperature dependence observed between k(CF2+O) and k(CF2+H).