Analysis of physical processes in targets heated by laser radiation of 200–300 J energy

Similarity solution of thermonuclear burn wave with electron and α-conductivities

“…So, the condition for "firing-up" in the general (non-similarity) case is The "firing-up" conditions obtained are in good agreement with the results of numerical computations for non-uniform target burning presented in Ref. [9]. In fact, the parameters for all targets which yield high gain factors fall within the plasma "firing-up" region (24).…”

“…Figure 1 shows typical initial temperature and density profiles, as taken from Ref. [9], where the compression of non-uniform shell targets is studied. As is easy to see, Tj, the temperature of…”

“…For instance, if we take the parameters from Ref. [9] for plasma "firing-up", we have, for p° ~ 54 g-cm" 3 , p\ ~ 1160 g« cm" 3 and Tj ~ 18 keV, the result that the thermal energy of the primary initiation region should be more 4 X 10 3 J.…”

Energy gain of D-T targets for inertial confinement fusion

“…The first two authors assumed that the mass density of the fuel is constant at the instant of ignition. However, it has been pointed out (Refs [4,5]) and confirmed by numerical simulations (e.g. Ref.…”

On the use of plasma foci as drivers for pellet implosions

“…ho is proportional to the ratio between pellet and plasma volumes. However, in contrast to the efficiency in a laser-driven implosion [17,18], i7 ho does not depend crucially on the aspect ratio of the shell Ar/r s . On the other hand, in laser-driven implosions the efficiency can be improved by proper adaptation of the pulse duration to the implosion time [ 18], a possibility that, clearly, does not exist in the plasma case.…”