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用液-液萃取法对18O离子辐照过的天然铀中的镤进行了分离。通过γ射线谱测量,发现了可能属于236Pa或237Pa衰变的34条新γ射线
Liquid-liquid extraction of 18O ions irradiated natural uranium was isolated. By gamma ray spectroscopy, 34 new gamma rays that may have been at 236 Pa or 237 Pa decay were found