There is a mixture of different types of radiation in space. It includes both electrically charged particle radiation, electrically neutral particle radiation, and electromagnetic radiation. For this reason, building radiation shields for space equipment or vehicles is a challenge. This work presents old and new solutions for radiation shields that have potential for use in space, along with their advantages and disadvantages.
Plasma basic ion implantation (PBII) with high negative voltage pulses has been applied to test specimens in a sterilization process as a technique suitable for three-dimensional workpieces. Pulsed high negative voltage was applied to the electrode in this process at the gas pressure of oxygen. It was reported that the PBII process reduced the numbers of active Bacillus pumilus cells using self-ignited plasma N2 gas generated by only pulsed voltages. The number of bacteria survivors was reduced by 10-5with a few min exposure. As the ion energy is the most important processing parameter, a simple method to estimate the oxygen ion energy calculated using distribution for oxygen in Si implanted by PBII was estimated. In this work, the Effect of Plasma Density on Residual Bacterial Number and Applied Voltage is studied.
The works on creation of technique of calculation of the electric corona ionization for storage of products with juicy plant products are summarized. The necessity to determine the effect of recombination of ions on the performance of these devices is proved. The dependence of the concentration of ions from the ionizer uptime, productivity and the recombination coefficient was obtained. It was determined that when calculating performance electric corona ionization for processing of plant products with succulent tissues outside the corona ions recombination can be ignored. Elucidation of the role of recombination in the processing of such products in the inter electrode space further research.