Radiation Generation from Exploding Wire.
TEXAS TECH UNIV LUBBOCK DEPT OF ELECTRICAL ENGINEERING
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A theoretical investigation has been performed on the dual nature of the experimentally observed x-ray spectra emitted by high power exploded wire plasmas. The observed spectra consist of a steeply decreasing region for photon energies below about 8KeV followed by a nearly constant region above this value. The region of steep decrease is the result of Bremsstrahlung from plasma electrons having a Maxwellian distribution. The constant region was considered as being caused by non-thermal high energy electrons. The constant region was investigated in more detail. They calculated first the Bremsstrahlung spectrum that would result from mono-energetic electrons of 5, 10, 20, 50 and 100 KeV incident on tungsten targets. All the spectra were found to have the same flat shape. The case of non-Maxwellian distribution of electrons was examined by using a distribution function appropriate to a homogeneous plasma in a strong electric field. After integration it was found that the spectrum changed from steep to flat as a function of time. It was concluded that a flat spectrum may arise through a distortion of the electron distribution function in a strong electric field. Author
- Ammunition and Explosives
- Plasma Physics and Magnetohydrodynamics
- Radiofrequency Wave Propagation