Fixed energy balance window quench correction for high precision LSC ¹⁴C dating

In this paper we present the new LSC spectra evaluation method for high precision ¹⁴C dating with Quantulus 1220™. The generally used fixed window is replaced with the fixed energy balanced counting window. The lower and upper channel of the window in the multichannel analyzer vary according to the quench level of each individual measurement. The position of the window is determined with the external standard quench parameter SQP(E) of Quantulus 1220™. We show how this fixed energy balance window for each sample secures high stability and reduced quench correction. This method is compared with the typically used fixed channel window.