Use Deadtime Correction

Use Deadtime Correction

The deadtime correction can be disabled for use in certain unusual analytical situations. The program will type a warning to the log window during a quantitative analysis if the deadtime correction is disabled. Two deadtime correction options are available, the normal expression shown here :

Expression # 1 :                                  

Where :                  i         is the raw measured counts in cps

                          is the deadtime constant in seconds

                   I         is the deadtime corrected counts in cps

and a high precision expression (Willis, 1993) for use with very high count rates (> 50K cps) shown here :

Expression #2 :                                   

This high precision expression differs from the normal expression only at very high count rates. The following table shows the difference between the two expressions at various count rates :