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A fusion energy gain factor, usually expressed with the symbol Q, is the ratio of fusion power produced in a nuclear fusion reactor to the power required to maintain the plasma in steady state. The condition of Q = 1, when the power being released by the fusion reactions is equal to the required heating power, is referred to as breakeven , or ...
Energy per reaction is the energy released in each fusion reaction; This equation is typically averaged over a population of ions which has a normal distribution. The result is the amount of energy being created by the plasma at any instant in time. Lawson then estimated [5] the radiation losses using the following equation:
Fusion energy gain factor: 2022: 1.54: NIF [286] Discharge time (field reversed configuration) 2016: 3 × 10 −1 s: Princeton Field Reversed Configuration [307] Fusion was not observed. Discharge time is not confinement time. Discharge time (stellarator) 2019 >1 × 10 2 s: Wendelstein 7-X [308] [309] Discharge time (tokamak) 2022 >1 × 10 3 s ...
A gain greater than one (greater than zero dB), that is, amplification, is the defining property of an active device or circuit, while a passive circuit will have a gain of less than one. [4] The term gain alone is ambiguous, and can refer to the ratio of output to input voltage (voltage gain), current (current gain) or electric power (power ...
"The fusion energy gain factor, usually expressed with the symbol Q, is the ratio of fusion power produced in a nuclear fusion reactor to the power required to maintain the plasma in steady state. The condition of Q = 1, when the power being released by the fusion reactions is equal to the required heating power, is referred to as breakeven, or ...
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The gain A OL is a complex function of frequency, with both magnitude and phase. [note 1] Examination of this relation shows the possibility of infinite gain (interpreted as instability) if the product βA OL = −1 (that is, the magnitude of βA OL is unity and its phase is −180°, the so-called Barkhausen stability criterion). Bode plots ...
From the gain factor G, one finds the gain in decibels as: G dBi = 10 log 10 ( G ) . {\displaystyle G_{\text{dBi}}=10\log _{10}\left(G\right).} Therefore, an antenna with a peak power gain of 5 would be said to have a gain of 7 dBi. dBi is used rather than just dB to emphasize that this is the gain according to the basic definition, in ...