Advanced Accelerator Mass Spectrometry of 129I Using Laser Photodetachment

Accelerator Mass Spectrometry (AMS) is used for the trace determination of long-lived radioisotopes at natural isotopic abundances or less. This paper shows some recent trends and developments for improving AMS using a laser photodetachment technique, including a specific application for trace 129I determination. Advanced AMS for 129I was designed based on the development of a negative pulsed ion source for iodine by laser ablation and intracavity second-harmonic generation of a pulsed injectionlocked Ti:Sapphire laser for I-photodetachment.