Phase Effects on Mesoscale Object X-ray Absorption Images

Martz, Jr., H E ; Aufderheide, M B ; Barty, A ; Lehman, S K ; Kozioziemski, B J ; Schneberk, D J

Lawrence Livermore National Laboratory

关键词: Lawrence Livermore National Laboratory;    46 Instrumentation Related To Nuclear Science And Technology;    Absorption;    42 Engineering;    Algorithms;   

DOI  :  10.2172/15014410
RP-ID  :  UCRL-TR-207286
RP-ID  :  W-7405-ENG-48
RP-ID  :  15014410

美国|英语

来源: UNT Digital Library

【 摘 要 】

At Lawrence Livermore National Laboratory particular emphasis is being placed on the nondestructive characterization (NDC) of 'mesoscale' objects.[Martz and Albrecht 2003] We define mesoscale objects as objects that have mm extent with {micro}m features. Here we confine our discussions to x-ray imaging methods applicable to mesoscale object characterization. The goal is object recovery algorithms including phase to enable emerging high-spatial resolution x-ray imaging methods to ''see'' inside or image mesoscale-size materials and objects. To be successful our imaging characterization effort must be able to recover the object function to one micrometer or better spatial resolution over a few millimeters field-of-view with very high contrast.