9:45 AM - 10:00 AM [17a-B301-4] Analysis of dislocation embedded in Low-angle grain boundary in LiTaO3 crystal (Ⅰ)- Correspondence between X-ray topographic image and etch pit image - 〇Tomio Kajigaya1, Yuta Kubouchi1, Yutaka Ohno2 (1.SMM, 2.IMR,Tohoku Univ.)