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High-risk Mother With Plasma: It became possible to prevent the development of neonatal jaundice, which occurs during the first four weeks of newborn life, by passively immunizing the high-risk mother with plasma from sensitized Rh-negative women. This prevented the mother from developing antibodies that react to the baby's cells. (See BREAKTHROUGH in Year in Review: MEDICAL SCIENCES.)
At temperatures in the tens of millions to the hundreds of millions of degrees, bremsstrah-lung is created in the plasma; and its particles radiate a spectrum, the maximum energy of which is in the soft X-ray region. It also produces radiation that extends continuously from that region to radio waves.
2. Blackbody radiation: A high-temperature plasma so dense that its own radiation cannot escape through it is termed optically thick, or a blackbody. The X rays produced in an optically thick plasma are relatively less dense at longer wavelengths than those produced in thermal bremsstrahlung.
We now know how to apply the heat energies needed to produce a plasma of hot hydrogen isotopes. We have learned to build "containers" for the plasma, not out of matter, but out of complex arrays of magnetic fields, where the electromagnetic forces inherent in the plasma itself keep the gas confined within a container formed of opposing magnetic fields. Nevertheless, we have not yet been able to create a controlled self sustaining fusion reaction that could give us cheap electric power.
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