[roonie1988]

According to the website of the Ion Beam Analysis techniques, the diagram shows the summaries of those IBA processes;l

http://www.google.com/imgres?q=Ion+Beam+Analysis+Methods&hl=zh-TW&client=firefox-a&hs=d9i&sa=X&rls=org.mozilla:zh-TW:official&tbm=isch&prmd=imvns&tbnid=vrs4lqVxHEg-FM:&imgrefurl=http://www2.ulg.ac.be/ipne/ipne/iba/IBA.html&docid=EZhmvNKGwE5k7M&imgurl=http://www2.ulg.ac.be/ipne/ipne/iba/fig1.GIF&w=429&h=227&ei=qWyqTrz9M5D2mAXz5eGCDw&zoom=1&iact=hc&vpx=180&vpy=184&dur=154&hovh=112&hovw=212&tx=117&ty=90&sig=105339751480720500150&page=1&tbnh=112&tbnw=212&start=0&ndsp=15&ved=1t:429,r:0,s:0&biw=1280&bih=690

however, could anyone please explain the nature of Y(and Z if applicable) and what is occurring in the intermediate process (a,a or a,b) in each of the IBA methods? greatly appreicated !!