Neutron activation
He was also a top expert in the field of archaeometry. He pioneered high-precision methods of neutron activation analysis at the Lawrence Berkeley Laboratory in the US. Neutron activation analysis helps to determine the origin of ancient pottery and other artifacts through the analysis of the clay from which they were made. He was helped in the project by another noted scientist Frank Asaro. Second millennium BC pottery known as Cypriot Bichrome ware was one of the first archaeological projects that Perlman and Asaro undertook.