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D.T. Woods (SSL/UCB and LLNL), J.K. Nash, R.W. Lee (LLNL), G.F. Fisher (SSL/UCB)
We describe the status of a new spectral analysis software tool being developed at U.C. Berkeley and Lawrence Livermore National Laboratory. Unlike previous tools this software is designed to handle large volumes of atomic data in the construction of atomic models. Given the increasing size of ever-improving atomic data, we are developing a "Model Maker" which the user interacts with through a GUI. The user is free to choose the size and breadth of the atomic data to be used in the spectral analysis. An example might be to choose to average together all levels with n > 5. With our software this task can be treated consistently, allowing an on-line assessment of the impact of the approximation on the resulting spectrum. The Model Maker produces properly connected atomic models spanning the elements and ion stages so desired. The resulting atomic models can also be output for a user's separate application. Although we have developed our own extensive atomic database, the Model Maker is being designed so that a user can access atomic data from any location which places their data in an appropriate SQL compliant database on the internet. The accompanying GUI-driven spectral analysis software allows the solution of level populations using the user's selected atomic models to produce spectra for comparison with observations. The freedom to specify and manipulate the atomic data used in the analysis is the primary improvement over existing software tools. We will describe the status and proposed functionality of the Model Maker and the associated spectral analysis software. We also discuss the status of our extensive atomic database which has been under development for a number of years.
We acknowledge support from NASA under grant NAG5-7929, NSF grants ATM-9505182 and ATM-9896316, and the Department of Energy.
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