@inproceedings{26684a6840e54dae828f2400a0fbd00c,
title = "Initial gamma spectrometry examination of the AGR-3/4 irradiation",
abstract = "The initial results from gamma spectrometry examination of the different components from the combined third and fourth US Advanced Gas Reactor Fuel Development TRISO-coated particle fuel irradiation tests (AGR-3/4) have been analyzed. This experiment was designed to provide information about in-pile fission product migration. In each of the 12 capsules, a single stack of four compacts with designed-to-fail particles surrounded by two graphitic diffusion rings (inner and outer) and a graphite sink were irradiated in the Idaho National Laboratory's Advanced Test Reactor. Gamma spectrometry has been used to evaluate the gammaemitting fission product inventory of compacts from the irradiation and evaluate the burnup of these compacts based on the activity of the radioactive cesium isotopes (Cs-134 and Cs-137) in the compacts. Burnup from gamma spectrometry compares well with predicted burnup from simulations. Additionally, inner and outer rings were also examined by gamma spectrometry both to evaluate the fission product inventory and the distribution of gammaemitting fission products within the rings using gamma emission computed tomography. The cesium inventory of the scanned rings compares acceptably well with the expected inventory from fission product transport modeling. The inventory of the graphite fission product sinks is also being evaluated by gamma spectrometry.",
author = "Harp, {Jason M.} and Demkowicz, {Paul A.} and Stempien, {John D.}",
year = "2016",
language = "English",
series = "International Topical Meeting on High Temperature Reactor Technology, HTR 2016",
publisher = "American Nuclear Society",
pages = "512--519",
booktitle = "International Topical Meeting on High Temperature Reactor Technology, HTR 2016",
note = "8th International Topical Meeting on High Temperature Reactor Technology, HTR 2016 ; Conference date: 06-11-2016 Through 10-11-2016",
}