Publications

Sep, 2026

ORNL Report

Analytical Report for the Department of Energy Office of Nuclear Energy on the Characterization of High-Burnup Fuel Specimens

This report documents the second and final phase of the high-precision radiochemical assay (HP-RCA) of high burnup fuel specimens sampled from select fuel rods that are part of the DOE’s Sister Rod project. Reported here are the final seven of the sixteen high-burnup Zircalloy-clad UO2 fuel specimens analyzed by the Nuclear Analytical Chemical (NAC) Section in the Chemical…

Sep, 2026

Journal

Expanded method for the determination of burnup in nuclear fuels using multiple neodymium isotopes

Established methods for the determination of burnup in nuclear fuels commonly rely on the measurement of 148Nd in the spent fuel in concert with known fission product yields to determine the atom percent of fissions in the fuel. This isotope of neodymium is used for various reasons, including chemical and radioactive stability, ease of measurement, and low rates of formati…

Sep, 2026

ORNL Report

LETTER REPORT FOR ONE DOWN-BLENDED URANYL NITRATE (DBUN) SAMPLES (DBUN Tank 31) FOR THE ISOTEK SYSTEMS, LLC THORIUM-229 PROJECT IN OAK RIDGE, TENNESSEE

Aug, 2026

Journal

Accelerating actinium-225 purification by high-pressure ion chromatography

Actinium-225 (t1/2 = 9.92 days) is an important radioisotope for targeted alpha therapy applications. The limited supply obtained through the decay of thorium-229 has motivated accelerator-based production routes, including irradiation of thorium targets. Irradiated targets can produce useful quantities of actinium-225, but the product requires final purification from chem…

Aug, 2026

ORNL Report

PHAROS: PROMETHIUM HIGH-PRESSURE AUTOMATED RECOVERY WITH OPTIMIZED SEPARATION

Aug, 2026

ORNL Report

Update on Radiochemical Assessment of High Burnup Commercially Irradiated Fuel

May, 2026

ORNL Report

Case Narrative for Analytical Results for Three Samples Associated with the Remote-Handled Transuranic Fuel Sample Waste Generated at the Knolls Atomic Power Laboratory

Apr, 2026

ORNL Report

KAPL Waste Analysis Report

This report discusses the processes involved with the characterization of an unknown amount of Knolls Atomic Power Laboratory (KAPL) material for future removal and disposal at the Waste Isolation Pilot Plant (WIPP). The material underwent pulverization prior to transfer to the Irradiated Fuels Experimental Laboratory (IFEL) North Hot Cells to remove visual classification.…

Apr, 2026

ORNL Report

Post-Irradiation Examination on MiniFuel UCO and UO2 TRISO Particles Irradiated in HFIR at High Power

Apr, 2026

ORNL Report

Case Narrative for Analytical Results for Eight Swipe Samples Associated with the Oak Ridge National Laboratory Central Characterization Program Sampling Analysis Plan Remote-Handled Transuranic Waste Generated at the Oak Ridge National Laboratory Building 7920 – Hot Cell Cubicle 9, in Oak Ridge, Tennessee

Feb, 2026

ORNL Report

Evaluation of Elemental Contaminants in the Glovebox Workspace for Actinium-225 Production After a Deep Clean

Feb, 2026

Journal

Understanding the structural and morphological effects of synthesis route on NpO2

The availability of actinide standard materials for use in nuclear safeguard applications is critical, as is thorough characterization thereof. Although accurate trace element compositions and isotopic considerations are paramount for deployment of reference standards, structural characterization is also essential towards accurately describing the chemical form and potenti…