A 1D model of the scrape off layer is created with a physics based calculation of the impurity radiation and the inclusion of the perpendicular heat flux compared to previous 1D models. The calculation of the impurity radiation includes the addition of a model using parallel and perpendicular motion to calculate the impurity confinement time τ and the inclusion of charge exchange between neutral hydrogen and impurity ions. Reasonable agreement is found between the model and the 2D fluid code SOLPS-ITER. Additionally, an improvement is shown over the constant τ used in previous works. The model is used to examine the effects of shallow field line angles at ITER levels of parallel heat flux (). A large increase in radiation results in an increase in the upstream parallel heat flux which can still be in detachment at shallow field line angles for both and the calculated τ for traditional impurities (argon and nitrogen) as well as boron. The physics behind this increase in radiation at shallow field line angles is shown to be a decrease in τ and a change in the temperature profile with the inclusion of .