Bern Radiocarbon Dates IV

Abstract

This list covers part of the samples measured at the Radiocarbon Dating Laboratory, Physics Department, University of Bern since summer 1962. Two low-level counters, as described by Houtermans and Oeschger (1958), with incorporated anticoincidence are used. Each sample is measured in both counters. The CO 2 from the sample is converted to methane by pumping a (CO 2 + H 2 )-mixture at a pressure below 1 atm over a Ru-catalyst at 200°C.