Contribution of geometrical factors to irradiation non-uniformity in cylindrical hohlraum with two side ring sources

The contribution from the geometrical factors to the radiation nonuniformity in the case of an open end cylindrical hohlraum is discussed. The analysis is facilitated by using temperature profile of the cylindrical hohlraum heated by the two ring sources. The temperature profile is of a Tsakiris'Style. The temperature profile is separated from the geometrical factors in the case of vacuum cylinder and small target ball. It is demonstrated how the geometrical factors influence the irradiation non-uniformity with lapse of time. The misalignment and energy imbalance produces odd order rms variation. It is also found that those locations of X-ray converters, which have minimum value of rms variation, move toward the edge of cylinder with lapse of time. This suggests that the expansion of wall plasma is helpful to achieve a high radiation uniformity