Production of high-purity26Al
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26Al is a positron emitting radioisotope of aluminium and has a half-life of 7.16×105y. In addition to annihilation γ-rays of 511 keV, there are three high energy γ-rays 1129 (2.4%), 1809 (99.73%) and 2938 (0.27%) keV.26Al is the only radioisotope of aluminium available for radiochemical applications, the half-lives of the other aluminium isotopes are seconds and minutes. The usage of26Al is very important in the investigations of the metabolism of Al in human body (for example in Alzheimer disease studies) or as a tracer in radiochemical studies. But26Al is such a long-lived isotope that the task of producing it in tangible amounts is a very difficult one.
KeywordsAluminium Physical Chemistry Inorganic Chemistry Human Body Alzheimer Disease
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