Abstract
Tandem AMS measurements at Rochester in the past few years have mainly involved the radioisotopes 36 Cl and 129 I, and some work on 10 Be, in a variety of terrestrial and extraterrestrial samples. Some m easurem ents have also been m ade on certain stable isotopes of osmium in meteorites and geological samples from impact craters. M easurem ents of 36 Cl have been made in groundwater and surface rocks for dating purposes, in ice and soil samples containing nuclear-weapon testing fallout for tracing water movement, and in meteorites and Antarctic ice for terrestrial and extraterrestrial meteoritic age determination. Also, 10 Be has been measured in a lake sediment, and 36 Cl in Greenland ice, through the period of the Maunder minimum ; 129 I has been measured in hydrological systems, in petroleum and in hydrothermal convection cells in the oceanic crust. Other applications involving measurements of these two radioisotopes include hydrotherm al fluids associated with gold mineralization and the determination of the integrity of possible sites for deep nuclear-waste disposal. Previously, the Rochester tandem was employed to measure 14 C and isotopes of platinum and iridium in natural samples.
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Schedule a callMore From: Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
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