PPT-Photoemission electron microscope(PEEM) for photocathode studies

Alimohammed Kachwala 1 Oksana Chubenko 1 Howard Padmore 2 and Siddharth Karkare 1 1 Arizona State University Tempe AZ 8528 USA 2 Lawrence Berkley National Laboratory Berkley CA 95720 USA. Nicholas S. . Sirica. December 10, 2012. The Propagator within Many-Body. Physical Interpretation: Probability Amplitude. How is a . transition possible?. Interactions Mix States.  . A few distinctions exist between the propagator of many-body and that of high energy physics. Compound Light Microscope. The compound light microscope is a common tool in a life science laboratory. A . compound light microscope. is an instrument that magnifies small objects so that they can be seen easily. . The Microscope. An understanding of cells and the ultrastructure of cells had to wait until objects so small could be visualized by magnification.. Origin of the Microscope. The first record of the invention of a microscope was by Hans and Zacharias Janssen (Netherlands) in 1590?. Depth of . f. ield: small. Magnification. Uses lenses arranged in series, made of optical material that bends light. All magnification takes place via lenses. Uses . diascopic. illumination (that is, light is transmitted through the specimen). Magnification up to about 1000x.. 1. Photocathodes for Electron Accelerators. Evangelos. . Gazis. Katerina. . . Tzanetou. Pirsi. . Prepibaj. Rafaella. . Kotitsa. Nick . Gazis. (ESS ERIC). Institute of Accelerating Systems & Applications. Benjamin Hardy, . Bowling Green State University. . Joseph . Grames, . Thomas Jefferson National Accelerator Facility. * . This work is supported by . the . National Science Foundation, Research Experience for Undergraduates award 1359026 and the Department of Energy, Laboratory Directed Research and Development contract DE-AC05-06OR23177.. 1590. –first compound microscope. History of the Microscope. 1655 – . Robert Hooke. used a compound microscope to observe pores in . cork.. He called them . “cells”. History of the Microscope. Care. Parts. Focusing. Always carry with 2 hands. Do not force knobs. Always store covered. Keep objects clear of desk and cords. Only use lens paper for cleaning. Microscope Care. Eyepiece. Body. . Scanning electron microscope (SEM. ). 2- Transmission Electron Microscope. New Techniques in Microscopy:. Confocal Microscopy (Confocal Scanning Laser Microscope). Light Microscope. Electron Microscope. What Is Microscope?. It is an instrument which deals with too small organisms that they cannot be seen distinctly with the naked eye. Microscopes provide the observer with enhanced . resolution. (ability to observe two nearby objects as distinct objects), . . Electron microscopy (EM) . is an electron beam which is focused into a small probe across the surface of a specimen . . The first electromagnetic lens was developed in 1926 by . Hans Busch. .. . Center: Photo-emission electron microscopy (PEEM) image with linearly polarized x-rays, showing antiferro-magnetic order.. Bottom: PEEM with circularly polarized x-rays, showing parallel/antiparallel magnetic moments.. Theoretically a microscope is an array of two lenses Need of M icroscopy Living organisms, cells and their organelles which are too small to be seen with the human eye, can only be seen with the aid Jared Maxson. Cornell University . Department of Physics + CLASSE. Premise. In this conference: first measurements of . few . meV. MTEs from a flat cathode. . What can photocathodes for photoinjectors offer the fields of .