iving ▁people ▁Category : M anga ▁artists ▁Category : An ime ▁character ▁design ers ▁Category : M anga ▁artists ▁from ▁K um am oto ▁Pref ect ure <0x0A> </s> ▁Pre cess ion ▁electron ▁diff raction ▁( P ED ) ▁is ▁a ▁special ized ▁method ▁to ▁collect ▁electron ▁diff raction ▁patterns ▁in ▁a ▁transmission ▁electron ▁mic ros cope ▁( TE M ). ▁By ▁rot ating ▁ ▁( pre cess ing ) ▁a ▁t ilt ed ▁incident ▁electron ▁beam ▁around ▁the ▁central ▁axis ▁of ▁the ▁mic ros cope , ▁a ▁P ED ▁pattern ▁is ▁formed ▁by ▁integration ▁over ▁a ▁collection ▁of ▁diff raction ▁conditions . ▁This ▁produces ▁a ▁quasi - kin emat ical ▁diff raction ▁pattern ▁that ▁is ▁more ▁suitable ▁as ▁input ▁into ▁direct ▁methods ▁algorithms ▁to ▁determine ▁the ▁cry stal ▁structure ▁of ▁the ▁sample . ▁ ▁Over view ▁ ▁Ge ometry ▁▁ ▁Pre cess ion ▁electron ▁diff raction ▁is ▁accomplished ▁util izing ▁the ▁standard ▁instrument ▁configuration ▁of ▁a ▁modern ▁T EM . ▁The ▁animation ▁illustr ates ▁the ▁geometry ▁used ▁to ▁generate ▁a ▁P ED ▁pattern . ▁Specifically , ▁the ▁beam ▁t ilt ▁co ils ▁located ▁pre - spec imen ▁are ▁used ▁to ▁t ilt ▁the ▁electron ▁beam ▁off ▁of ▁the ▁opt ic ▁axis ▁so ▁it ▁is ▁incident ▁with ▁the ▁spec imen ▁at ▁an ▁angle , ▁ φ . ▁The ▁image ▁shift ▁co ils ▁post - spec imen ▁are ▁then ▁used ▁to ▁t ilt ▁the ▁diff ract ed ▁be ams ▁back ▁in ▁a ▁complement ary ▁manner ▁such ▁that ▁the ▁direct ▁beam ▁falls ▁in ▁the ▁center