5 Results for As III

The computed oscillator strengths for transitions from the ground state of As III are presented in Table 5. For the $\rm 4p-5s$transition, the present value, 0.1228, lies inside the range of experimental values $0.13 \pm 0.02$ ([Andersen & Lindgard 1977]). This value, 0.1228, is in good agreement with the theoretical value 0.125 ([Migdalek 1976]), and is comparable to the theoretical values 0.147 ([Migdalek 1983]) and 0.185 ([Marcinek & Migdalek 1993]). For the $\rm 4p-6s$transition, the present value, 0.0198, is in good agreement with the theoretical value 0.0192 ([Migdalek 1976]). For the $\rm 4p-4d$ transition, the present value, 0.9877, lies inside the range of experimental values $0.88 \pm 0.15$ ([Andersen & Lindgard 1977]), but is outside the experimental range $1.30 \pm 0.08$ ([Pinnington et al. 1981]). The present value, 0.9877, is in good agreement with the theoretical value 1.026 ([Migdalek 1976]). For $\rm 4p-5d$, the present value, 0.0797, is in good agreement with the theoretical value 0.0858 ([Migdalek 1976]). There is no experimental or theoretical data on the higher transitions $\rm 4p-ns$, n>6, and $\rm 4p-nd$, n>5.