Abstract
Progress in the development of high power lasers during the past decade has opened the door to many new areas of applications. The best known, of course, is the possibility of achieving controlled thermonuclear fusion by means of laser heated plasma. However, several applications of laser plasma x-rays have more attractive current prospects. There are many points of similarity between the x-ray and fusion problem. Both, for example, require laser heating of plasmas to the kilovolt regime. But there are significant differences. The x-ray work usually involves heating of high Z materials, while the fusionable materials are low Z. Most of the x-ray applications do not require target compressions, and can use simple planar targets. Additionally, neither the plasma temperature nor the laser efficiency requirements are as severe. The main effect of these differences is that the lasers for x-ray production can be much smaller and less expensive than lasers for fusion. We have recently demonstrated that x-rays can be efficiently generated with mode locked laser pulses of several hundred mj1. The characteristics that differentiate a laser plasma x-ray source from conventional sources are:
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(1)
The x-ray spectrum comes from highly stripped species and is predominantly L line radiation or continuum in the kilovolt regime. Heliumlike K lines are also obtainable.
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(2)
The pulse width is very short in the ~0.1 to 10 ns range.
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(3)
The source size is very small, ~10–200 µm diameter.
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© 1984 Plenum Press, New York
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Epstein, H.M., Schwerzel, R.L., Campbell, B.E. (1984). Applications of X-Rays from Laser Produced Plasmas. In: Hora, H., Miley, G.H. (eds) Laser Interaction and Related Plasma Phenomena. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7332-6_10
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