Observation of Vortices and Columnar Defects by Using Lorentz Microscopy Kasai, H. ; Kamimura, O. ; Matsuda, T. ; Harada, K. ; Tonomura, A. ; Okayasu, S. ; Sasase, M. ; Nakayama, Y. ; Shimoyama, J. ; Kishio, K. ; Hanaguri, T. ; Kitazawa, K. Abstract Publication: Microscopy and Microanalysis Pub Date: August 2002 DOI: 10.1017/S1431927602105198 Bibcode: 2002MiMic...8S.526K