Which isotopic radio needs to be determined when the age of ancient wooden objects is investigated?

When determining the age of ancient wooden objects, radiocarbon dating is commonly used, which relies on the isotopic radio of Carbon-14 (C-14). This isotope is produced in the atmosphere and is absorbed by living organisms. Once the organism dies, C-14 starts to decay at a known rate, allowing researchers to estimate the time since death by measuring the remaining C-14 in the sample. This method is effective for dating wooden artifacts up to about 50,000 years old.