Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
62 (1987), S. 4090-4095
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A z-pinch plasma is an x-ray radiation source of small size concerning the z-direction radiation. However, the plasma is optically thick with respect to the resonance lines, which contain a large fraction of the total radiation. The influence of the opacity on efficiency and spatial radiation distribution has been examined. A computer simulation solving the radiation transport equation demonstrates that the efficiency of the x-ray output decreases due to absorption, but only slightly because photon trapping is mostly followed by reemission. Using this result another computer code could determine the following features concerning the angular radiation distribution: (1) The average r-direction intensity is larger than the z-direction intensity. (2) The ratio of z-direction intensity to r-direction intensity varies from shot to shot. (3) The standard deviation of z-direction intensity is larger than that of the r-direction intensity. Several plasma focus experiments were carried out, the results of which provide good qualitative proof of the above predictions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.339122
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