Geological Survey of Finland Radiocarbon Measurements V

1 January 1971

journal article
research article
Published by Cambridge University Press (CUP) in Radiocarbon

Vol. 13 (2) , 432-441
https://doi.org/10.1017/s0033822200008547

Abstract

The C¹⁴ measurements reported here were made in this laboratory between July 1969 and September 1970. The dating system consists of a 0.55 L copper-walled proportional counter (adapted from östlund and Engstrand, 1963, constructed by Outokumpu Oy, Research Lab., Tapiola, Finland) surrounded by a lead cylinder, 1.5 cm thick, placed within an anticoincidence meson detector. The system is encased in selected lead 1.5 cm thick, 7 cm of paraffin wax with ca. 10% boric acid and ca. 20 cm iron. Counter gas is CO₂ with which the counter is filled to 228.6 m Hg at a detector temperature of 20°C. Background is 1.50 cpm and net contemporary value is ca. 10.0 cmp.

Keywords

This publication has 2 references indexed in Scilit:

Geological Survey of Finland Radiocarbon Measurements IV
Radiocarbon, 1969
Stockholm Natural Radiocarbon Measurements V
Radiocarbon, 1963