Dating uranium 238
However, it cannot stop fast neutrons having a speed of 14,000 km/s, as effectively as ordinary water.Researchers are trying to find out whether Uranium Dioxide concretes can be used as a Cask Storage material for storing radioactive waste.This material does not undergo fission unless struck by a high energy neutron.It collides with a neutron and turns into Uranium 239, which undergoes decay and produces Plutonium-239.It is not a fissile substance thus cannot sustain nuclear fission.However this isotope is a fertile material, which means other fissile materials are generated from it.
It produces fissile products like Plutonium- 239, which is used as a nuclear fuel to produce high amounts of energy.Lead (stable) is the final element of this Alpha decay process.Following is the complete decay series: Uranium-238 → Thorium-234→ Protactinium-234m→ Uranium-234→ Thorium-230→ Radium-226→ Rodon-222→ Polonium-218→ Lead-214→ Bismuth-214→ Polonium-214→ Lead-210→ Bismuth-210→ Polonium-210→ Lead-205 (stable) This series is also known as “Radium Series”.In this process, the age of an object is determined by adding the amount of the daughter product (e.g.Thorium) in the object with the amount of the parent isotope (e.g. Uranium-238 is used as a “tamper” material in nuclear weapons.
We use U-Th dating to obtain a chronology for stalagmites which are used for palaeoclimate research (pdf), dating carbonate crusts on cave art to derive minimum age constraints for underlying art(paper Hoffmann et al. (2012) (DOI: 10.1126/science.1219957), speleothem formations in stratigraphic relationship with archaeological artefacts, travertine formation in relation with archaeology.