Correction to Account for the Isomer of ⁸⁷Y in the ⁸⁷Y Radiochemical Diagnostic

Technical Report · Mon Nov 13 00:00:00 EST 2017

DOI:https://doi.org/10.2172/1408853· OSTI ID:1408853

Hayes-Sterbenz, Anna Catherine ^[1]; Jungman, Gerard ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here we summarize the need to correct inventories of ⁸⁷Y reported by the Los Alamos weapons radiochemistry team. The need for a correction arises from the fact that a 13.37 hour isomer of ⁸⁷Y, that is strongly populated through (n, 2n) reactions on ⁸⁸Y and isomers of ⁸⁸Y, has not been included in the experimental analyses of NTS data. Inventories of ⁸⁷Y reported by LANL’s weapons radiochemistry team should be multiplied by a correction factor that is numerically close to 0.9. Alternatively, the user could increase simulated values of ⁸⁷Y by 1.1 for comparison with the original method for reporting NTS values. If the inventories in question were directly reported by LLNL’s radiochemistry team, care must be taken to determine whether or not the correction factor has already been applied.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1408853
• Report Number(s): LA-UR-17-30370
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY