摘要
X射线无损成像技术在古生物化石标本研究领域中应用十分广泛.近几年来,随着技术的不断革新,同步辐射X射线相衬显微断层成像技术(SRX-PCμ-CT)也被引入到这一领域.由于同步辐射光源产生的硬X射线具有高亮度、高准直性和高空间相干性等优点,可以实现化石标本高分辨率(亚微米级)的无损三维显微成像,给古生物学的发展带来了新的机遇.文章简要回顾了用于古生物化石标本无损成像技术的发展历程,并在此基础上综述了同步辐射X射线断层显微成像技术在古生物学领域的应用现状和前景.
X-ray imaging has been employed in paleontology for more than 100 years, and has made great contributions to the nondestructive studies of paleontological fossil specimens. With the development of X-ray technology, a new type of nondestructive imaging, synchrotron X-ray mierotomography, has been applied to this field in recent years. This is a special kind of micro-computer tomography based on hard X-rays from synchrotron radiation, which is characterized by high brilliance, high transverse spatial coherence and a high degree of uni-direetionality. Nondestructive 3-D imaging with submicron resolution of fossils is now possible, opening up new possibilities for paleontology. This paper reviews recent developments and future prospects of the application of phasecontrast-enhanced synchrotron X-ray microtomography in paleontology.
出处
《物理》
CAS
北大核心
2009年第7期504-510,共7页
Physics
基金
国家自然基金(批准号:40725005)
国家重点基础研究发展计划(批准号:2006CB806401)资助项目
