痕量同位素
痕量同位素是指在自然界中僅以極少的量(即痕量)存在的同位素,皆為半衰期較短的放射性同位素。自然界中的痕量同位素大多為長壽命的原始放射性同位素(如鈾-238、釷-232等)之衰變產物,或者是宇宙射線撞擊地球物質後的產物。[1][2][3]
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引用
- Curtis, David; Fabryka-Martin, June; Paul, Dixon; Cramer, Jan. . Geochimica et Cosmochimica Acta. 1999, 63 (2): 275–285. Bibcode:1999GeCoA..63..275C. doi:10.1016/S0016-7037(98)00282-8 (英语).
- (PDF). [2009-08-28]. (原始内容 (PDF)存档于2011-07-22).
- Wilcken, K.~M.; Barrows, T. T.; Fifield, L. K.; Tims, S. G.; Steier, P. . Nuclear Instruments and Methods in Physics Research B. June 2007, 259: 727–732. Bibcode:2007NIMPB.259..727W. doi:10.1016/j.nimb.2007.01.210 (英语).
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