An Examination of the Effects of Be Grain Size

Cook, R

Lawrence Livermore National Laboratory

关键词: 70 Plasma Physics And Fusion Technology;    Orientation;    Crystal Structure;    36 Materials Science;    Mathematical Models;   

DOI  :  10.2172/15013514
RP-ID  :  UCRL-ID-142049
RP-ID  :  W-7405-ENG-48
RP-ID  :  15013514

美国|英语

来源: UNT Digital Library

【 摘 要 】

During the WBS4 review almost a year ago in January, and in more recent discussions of needed capsule characterization, I was struck by three pieces of information related to machined Be capsules: (1) that the speed of sound (and perhaps other properties) in Be grains is markedly different in orthogonal directions, (2) that the grain size in the best refined bulk Be samples is 10 to 15 {micro}m, and that these grains in the best case are randomly oriented, and (3) that we are concerned about capsule homogeneity on the level of 1 part in 10{sup 4}, presumably over angular length scales corresponding to the maximum in the growth curve. It seems to me that the first two points might be inconsistent with the third, and this led me to attempt to model the effect of randomly oriented Be grains on the radially dependent properties of a capsule.