Promethium power supply battery equipment
A technology of a battery device and a light source device, applied in the energy field, can solve the problems of combined application, small absorption cross-section, unclear concept, etc., and achieves the effects of good economy, high specific energy and high economy.
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[0020] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0021] The promethium source 1 is to use the beta ray emitted by the radioactive isotope promethium as the power source. But because metal promethium is difficult to obtain, and the research about it is also few, so what the present invention adopts is the oxide of promethium——Pm 2 o 3 . PM 2 o 3 Not only is it readily available, it's also cheap. 1 gram Pm 2 o 3 Equivalent to 0.86 grams of Pm. The promethium material that device of the present invention adopts all refers to Pm 2 o 3 . From the perspective of radiology, it is meaningless to use 4n chemically pure promethium, because 147 Pm decays at a rate of 2.2% per month. The present invention uses promethium oxide with a purity of 99-95%, or commercial-grade promethium oxide (purity greater than 90%). Since the source material itself has an obvious weakening effect on β particles, the Pm used in this d...
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