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DTRA’s advancements in nuclear and radiological detection
A new, more complex nuclear age has begun. Echoing the tensions of the Cold War amid rapidly evolving nuclear and radiological threats, preparedness in the modern age is a contest of scientific innovation. The Research and Development Directorate (RD) at the Defense Threat Reduction Agency (DTRA) is charged with winning this contest.
N. S. Yoon, B. H. Park, J. G. Yang, S. M. Hwang
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 427-431
Poster Presentations | doi.org/10.13182/FST99-A11963899
Articles are hosted by Taylor and Francis Online.
Results of global discharge modeling and simulation of the Hanbit magentic mirror discharge are given and an RF heating theory and its results are presented.
In the global discharge model, global transport equations of ions and electrons are solved including and impurity recycling equations. Based on the developed global model, the effect of oxygen impurity on the discharge characteristics is simulated. Also, Maxwell-Boltzmann equations are solved by the mode analysis technique to develop a theory of the radio frequency (RF) wave heating mechanism in a magnetic mirror discharge condition. Utilizing the solution the discharge impedance is calculated for the case of slot antenna. Moreover the plasma resistance is divided into an electron resistance and and ion resistance which indicate absorbed powers by electrons and ions, respectively.