|A method of ocean sediments dating by estimating or ratio of protactinium-231 and thorium-230 (ionium) was suggested and developed, producing scientifically very valuable results; at least for this reason protactinium is worthy to be seriously researched. It should be reminded that thorium and germanium previously also had been "unemployed".|
Protactinium is the element of the future. It is not too difficult to produce uranium-232 by protactinium-231 neutron bombarding. This uranium product produces uranium itself. Meanwhile uranium-232 is a very efficient α-particle source which may compete with plutonium-238 and polonium-210 which are used in terrestrial and space technologies as independent power sources. The calculated energy release of uranium-238 is 9 times of that of plutonium-238 with very close half-life periods. That makes protactinium-231 very prospective as an easiest way of obtaining uranium-232.