TY - JOUR
T1 - Application of a hybrid collisional radiative model to recombining argon plasmas
AU - Benoij, D.A.
AU - Mullen, van der, J.J.A.M.
AU - Sanden, van de, M.C.M.
AU - Sijde, van der, B.
AU - Schram, D.C.
PY - 1993
Y1 - 1993
N2 - A collisional radiative model, in which a hybrid cut-off technique is used, is applied to recombining plasmas to study the atomic state distribution function (ASDF) and the recombination coefficient. Computations of the ASDF using semi-empirical rate coefficients of Vriens and Smeets (V-S) and Drawin (D) are compared with experimental values measured at various positions in a free expanding argon arc jet. Apart from the shock position, where the calculated results are too low, the model calculations are higher than the experimental results. The volumetric recombination coefficient has a T/sub e//sup -4.2/ and a T/sub e//sup -4.8/ dependence when semi-empirical rate coefficients of, respectively, V-S and D are used. The differences between the models based on the rate coefficients of V-S and D indicate that the recombination flow is sensitive to the low temperature behavior of the rate coefficients
AB - A collisional radiative model, in which a hybrid cut-off technique is used, is applied to recombining plasmas to study the atomic state distribution function (ASDF) and the recombination coefficient. Computations of the ASDF using semi-empirical rate coefficients of Vriens and Smeets (V-S) and Drawin (D) are compared with experimental values measured at various positions in a free expanding argon arc jet. Apart from the shock position, where the calculated results are too low, the model calculations are higher than the experimental results. The volumetric recombination coefficient has a T/sub e//sup -4.2/ and a T/sub e//sup -4.8/ dependence when semi-empirical rate coefficients of, respectively, V-S and D are used. The differences between the models based on the rate coefficients of V-S and D indicate that the recombination flow is sensitive to the low temperature behavior of the rate coefficients
U2 - 10.1016/0022-4073(93)90053-K
DO - 10.1016/0022-4073(93)90053-K
M3 - Article
VL - 49
SP - 129
EP - 139
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
IS - 2
ER -