<sup>10</sup>Be is mainly produced in meteorite by spallation reactions of cosmic ray particles with oxygen, magnesium, silicon or nitrogen in it. The threshold energy is above 500 MeV. The half lifetime o...<sup>10</sup>Be is mainly produced in meteorite by spallation reactions of cosmic ray particles with oxygen, magnesium, silicon or nitrogen in it. The threshold energy is above 500 MeV. The half lifetime of <sup>10</sup>Be in between <sup>26</sup>Al and <sup>53</sup>Mn is 1.6 Ma. Thus the possibility of routine determination of <sup>10</sup>Be in a large number of meteorites constitutes an improvement in studying the exposure conditions of展开更多
文摘<sup>10</sup>Be is mainly produced in meteorite by spallation reactions of cosmic ray particles with oxygen, magnesium, silicon or nitrogen in it. The threshold energy is above 500 MeV. The half lifetime of <sup>10</sup>Be in between <sup>26</sup>Al and <sup>53</sup>Mn is 1.6 Ma. Thus the possibility of routine determination of <sup>10</sup>Be in a large number of meteorites constitutes an improvement in studying the exposure conditions of
