The objective is to show that plasma radiation source (PRS) behavior during the radiation pulse is controlled by fast ions. They result from both the plasma implosion as well as near-axis acceleration following implosion. They have long collision lengths until slowed by thermal electrons to near thermal ion speeds. This non-fluid behavior leads to the diffuse plasma pinches seen in experiments and results in radiation pulsewidths that are longer, less intense and characterized by cooler plasma radiation spectra than are needed for increased output of soft X-rays. We will develop a computer model to take account of the non-fluid dynamics and to explain observations in experiments using large radiation simulators. Success of this model would impact future machine technology and, to a greater extent, the design of plasma loads. Based on the degree of success achieved will recommend a Phase II program to work with both theory support and experimental groups to refine the model and apply it to plan PRS experiments. These would be planned to (a) test and verify it and (b) guide designs for increased X-ray output of harder spectra than is possible today.Anticipated Benefits/Commercial Applications: The benefits to AVONIA are for a verified and validated software model. This model would find application in both DOD and DOE X-radiation simulation programs as well as in pellet fusion research.
