Radiocarbon

This page provides a short tutorial leading through some steps that are required for obtaining U-Pb zircon ages using the UCLA ims ion microprobe:. Pb isotope intensity of zircon during O – ion bombardement is significantly enhanced if the sample surface is saturated with regard to oxygen. During zircon analysis, oxygen gas is leaked through a valve into the ims sample chamber. Note: in order to open EP10, EP11 or to vent the door, the leak valve has to be closed 1.

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We will be happy to answer any questions you have. Please send us a message and one of our expert staff members will get back to you shortly! Accelerator Mass Spectrometers or AMS are the preeminent instrumentation used to measure 14C isotopes for radiocarbon dating analysis. AMS requires only a minute amount of material to obtain accurate, precise measurements, making it ideal for dating materials that are often rare or small.

However, due to the small sample sizes involved, control of contaminants is vital. Appropriate pretreatment is required to ensure potential contaminants have been eliminated and will not lead to substantial errors. The differences in design for these two instruments is significant, but the general principle in achieving analysis is the same. The C- beam is accelerated, focused, and split into 14, 13, and 12 amu beams. Each of the cathodes is sampled multiple times, allowing for a statistical evaluation of numerous data points for each sample.