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Russia withdraws from 25-year-old weapons-grade plutonium agreement
Russia’s lower house of Parliament, the State Duma, approved a measure to withdraw from a 25-year-old agreement with the United States to cut back on the leftover plutonium from Cold War–era nuclear weapons.
Seiji Saito, Masayoshi Sugihara, Nobol Fujisawa, Koju Ueda, Tetsuya Abe
Fusion Science and Technology | Volume 4 | Number 3 | November 1983 | Pages 498-507
Technical Papers | Divertor System | doi.org/10.13182/FST83-A22799
Articles are hosted by Taylor and Francis Online.
An improved method for Monte Carlo simulation is described to calculate the neutral-particle transport in a divertor throat and to evaluate the helium removal efficiency from a burning plasma. The required pumping speed for the helium removal is discussed with special emphasis placed on the efferts of long exhausting duct and of scrape-off plasma variables. The analysis for International Tokamak Reactor (INTOR) single null divertor suggests a possibility that the pumping requirement for INTOR could be drastically eased—e.g., <104 l/s, for the high scrape-off plasma density of the order of 1013 cm-3.