Rj. Schneider et al., MEASUREMENTS OF THE OXALIC-ACID-II OXALIC-ACID-I RATIO AS A QUALITY-CONTROL PARAMETER AT NOSAMS, Radiocarbon, 37(2), 1995, pp. 693-696
Precision of AMS single-target measurements is usually based on counti
ng statistics and variance during the data acquisition cycle. Addition
al longer-term variability may be studied by looking at the variabilit
y of the standards from cycle to cycle.