In 1947, JA Marinsky, LEGlendenin, and CECoryell successfully separated element 61 from uranium fuel used in nuclear reactors, using the name of the Greek mythology. Prometheus is named Promethium.人造 is an artificial radioactive element produced by a nuclear reactor.
The main uses of cockroaches are: (1) can be used as a heat source. Provides auxiliary energy for vacuum detection and satellites. (2) Pm147 emits low-energy beta rays and is used to manufacture tantalum batteries. As a power source for missile guidance instruments and watches. This type of battery is small and can be used continuously for several years. In addition, helium is also used in portable X-rays, in the preparation of phosphors, in the measurement of thickness and in beacon lights.

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November 23, 2019