Radionuclide Software Development

STAX – Stack Data Processing Pipeline

Under contract to the Pacific Northwest National Lab (PNNL.GOV), ISTI is developing the STAX (Source Term Analysis of Xenon) data processing software.

The use of radiation and radioisotopes in the field of medicine has proven invaluable in the treatment and diagnosis of many diseases and medical conditions (such as cancer and hyperthyroidism). However, release of radioactive Xenon from Medical Isotope Production facilities (MIPs) presents a challenge to the interpretation of data from the noble gas monitoring network of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), as these MIP releases may mask the releases of xenon from underground nuclear tests.

The Source Term Analysis of Xenon (STAX) project is a new effort to better understand the radioxenon background in the environment.  This project aims to use high resolution stack detector systems to measure releases of volatile radioisotopes (most importantly the radioxenon isotopes Xe-131m, Xe-133m, Xe-133 and Xe-135) from fission based Mo-99 production facilities.  The data pipeline from the collection of the raw data to the automatic analysis of the data at a centralized data repository involves many steps.  Some of these steps include data conversion to a standardized format, secure data transmission, encryption, data receiving and parsing, automated spectral analysis and distribution of data to authorized users. ISTI is supplying the software infrastructure for STAX, from gathering data at the MIPs and ensuring secure transport, to central organization, visualization, analysis and distribution.

A complete summary of this project may be found at: