NaI Resolution

Every detector has a specific resolution, or ability to resolve two peaks that are fairly close together in Energy. The resolution of a photopeak is defined by:

R = FHWM / E

We calculate the resolution for each peak of ²³²Th and ²²Na’s spectra and than fit these values with the following function:

R = sqrt (A²+B²/E + C²/E²)

This equation takes into account the following contributions to the resolution:

-A represents the (constant) contribution due to photomultiplier

-B represents the statistical error (which can not be eliminated )

-C is the contribution due to the electric noise.

Every detector has a specific resolution, or ability to resolve two peaks that are fairly close together in Energy. The resolution of a photopeak is defined by:

R = FHWM / E

We calculate the resolution for each peak of ²³²Th and ²²Na’s spectra and than fit these values with the following function:

R = sqrt (A²+B²/E + C²/E²)

This equation takes into account the following contributions to the resolution:

-A represents the (constant) contribution due to photomultiplier

-B represents the statistical error (which can not be eliminated )

-C is the contribution due to the electric noise.