Density Measurements of Be Shells

Cook, R C

Lawrence Livermore National Laboratory

关键词: Coatings;    37 Inorganic, Organic, Physical And Analytical Chemistry;    Thickness;    Beryllium;    Shells;   

DOI  :  10.2172/15014731
RP-ID  :  UCRL-TR-210020
RP-ID  :  W-7405-ENG-48
RP-ID  :  15014731

美国|英语

来源: UNT Digital Library

【 摘 要 】

The purpose of this memo is to lay out the uncertainties associated with the measurement of density of Be ablators by the weigh and volume method. I am counting on the readers to point out any faulty assumptions about the techniques or uncertainties associated with them. Based on the analysis presented below we should expect that 30 {micro}m thick shells will have an uncertainty in the measured density of about 2% of the value, coming more or less equally from the mass and volume measurement. The uncertainty is roughly inversely proportional to the coating thickness, thus a 60 {micro}m walled shell would result in a 1% uncertainty in the density.