Fusion power ratio

Fig. 2.1. Fusion triple product uTte, vs. temperature (KeV), and contours of constant plasma surfaces interaction intensity p (definition see text). Q is the ratio of output fusion power to input heating power. The upper left part (beyond the radiation limit line) is not accessible, due to unavoidable radiation losses (Bremsstrahlung) already exceeding fusion power production...

Also in 1950 Sakliarov and Tamm proposed an idea for a controlled thermonuclear fusion reactor, the TOKAMAK (acronym for the Russian phrase for toroidal chamber with magnetic coiF ), which achieved the highest ratio of output power to input power of any fusion device of the twentieth centuiy. This reactor grew out of interest in a controlled nuclear fusion reaction, since 1950. Sakharov first considered electrostatic confinement, but soon came to the idea of magnetic confinement. Tamm joined the effort with his work on particle motion in a magnetic field, including cyclotron motion, drifts, and magnetic surfaces. Sakharov and Tamm realized that... 

Multi-collector ICP-MS is a powerful technique for precise determination of isotope ratios, as demonstrated for isotopic analysis of Ir after fusion by Ulfbeck et al. (2003). Total reflection XRF (TXRF) can also be used to determine PGM, the advantages being the need for only a small sample volume and also multi-element capability. To lower the LOD, Messerschmidt et al. 

Q represents the ratio of power produced to power consumed in a nuclear fusion reaction. The current record for Q is a value of 1.25. 

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