Development and Deployment of Retrofit PolarisQ Ion Trap Mass Spectrometer for Isotope Ratio Measurements

Thompson, Cyril V.¹  Whitten, William B.¹ 

[1]Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

关键词: MASS SPECTROMETERS;    IONS;    URANIUM HEXAFLUORIDE;    ISOTOPE RATIO;    TRAPS;    HYDROFLUORIC ACID;    ELECTRON MULTIPLIERS;    WATER;    FILAMENTS;    WEIGHT;   

DOI  :  10.2172/1234353
RP-ID  :  ORNL/LTR--2015/671
PID  :  OSTI ID: 1234353
Others  :  Other: NN4009030
Others  :  MDGA517
Others  :  TRN: US1600214

美国|英语

来源: SciTech Connect

【 摘 要 】

This report describes Oak Ridge National Laboratory???s (ORNL) FY15 progress in support of National Nuclear Security Administration???s (NNSA) Portable Mass Spectrometer project. A retrofit PolarisQ ion trap mass spectrometer (RPMS) has been assembled from components of two PolarisQ ion trap mass spectrometers used in previous isotope ratio programs. The retrofit mass spectrometer includes a custom Hastelloy vacuum chamber which is about ?? the size of the standard aluminum vacuum chamber and reduces the instrument weight from the original by nine pounds. In addition, the new vacuum chamber can be independently heated to reduce impurities such as water, which reacts with UF₆ to produce HF in the vacuum chamber. The analyzer and all components requiring service are mounted on the chamber lid, facilitating quick and easy replacement of consumable components such as the filament and electron multiplier.