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Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
T. Saito, Y. Tatematsu, K. Kajiwara, H. Abe, M. Ishikawa, Y. Kiwamoto, Y. Imaizumi, K. Nishida, E. Yokoyama, M. Ichimura, K. Ishii, I. Katanuma, K. Yatsu
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 143-146
Topical Lectures | doi.org/10.13182/FST01-A11963427
Articles are hosted by Taylor and Francis Online.
This paper describes response of currents circulating in an end region of the GAMMA 10 tandem mirror to variation of an end plate resistance REP. By changing its value from less than 1 Ω to over 1 MΩ, are examined the variation of the plasma potentials and the current balance at the end plate during fundamental ECRH. Main results are as follows. First, for REP ≥ 3 kΩ, the end plate potential as measured from the vacuum vessel is nearly constant and for REP ≤ 0.5 kΩ, on the contrary, the current flowing through the resistance is nearly constant. Second, the plasma potentials other than the end plate weakly depends on REP. In particular, the plasma potential at the central cell hardly varies with REP. Third, with decreasing REP, a step-like increase in the net current flowing through the end plate is observed at REP ≈ Zeff. Ion currents are observed on ring electrodes installed in the mirror cell in which ECRH is applied. A part of the ion current is to be connected to the end plate current.