
LS 6000 Scintillation System User’s Manual
PN 247971-F
6-4
Isotope/DPM Libraries
The Isotope Library
Adding A New Isotope to the Isotope Library
Isotopes may be added to the New Isotope Library using an automatic window setup program
or by manually entering the window settings. During Multi-Task, Isotopes may only be added
manually. Isotopes are stored by type of sclntlllator.
Automatic Window Setup calculates an upper limit that covers 99% of the entire energy
spectrum of the isotope, based on a sample of the isotope you have prepared. The sample
must be the least quenched that you will count during actual experiments. If it is not, you
may get lower counts from your experiments or the sample may be rejected if too much
quench is present. When H# Plus is installed, the dpm for the sample used to determine the
window settings can be entered, providing window settings for samples of higher quench
levels. For good statistical accuracy, the samples should contain at least 10,000 cpm. The
sample may be counted in either a miniature or standard vial if Versa-Rack is installed. Up to
ten isotopes may be added in one session.
Manual Window Setup allows you to input predetermined window settings of the isotope for
either type of scintillator.
To add one or more isotopes to the Isotope Library:
Refer to Accessing the Isotope Library Section 6 for information on how to access the New Isotope
Setup Menu.
Figure 6.3 Menu to Set Up New Isotope.
Comentarios a estos manuales