Absolute Electron Emission Calibration: Round Eobin Tests of Au and Graphite

JR Dennison, Utah State Univesity
Justin Christensen, Utah State University
Justin Dekany, Utah State University
Clint Thomson, Utah State University, Orbital ATK Launch Systems
Neal Nickles, Utah State University, Ball Aerospace Corporation
Robert E. Davies, Utah State University
Mohamed Belhaj, Onera- The French Aerospace Lab Fr-31055
Kazuhiro Toyoda, Kyushu Institute of Technology
Kazutaka Kawasaki, Kyushu Institute of Technology
Isabel Montero, Instituto de Ciencia de Materiales de Madrid
Maria E. Dávil, Instituto de Ciencia de Materiales de Madrid
Leandro Olano, Instituto de Ciencia de Materiales de Madrid
Luis Galán, Instituto de Ciencia de Materiales de Madrid


This study presents a round robin comparison of absolute electron yields of conducting and insulating materials performed in four international laboratories. Measurements are reported for two standard elemental conducting samples with reproducible sample preparation for Au and highly oriented pyrolytic graphite (HOPG). The primary objectives of the study were to determine the consistency and uncertainties of these absolute yields measurements, and to investigate the effects of the similarities and differences of the diverse facilities. In this initial round robin study, HOPG total electron yield results were found to be more reproducible than those for Au. Surface contamination significantly affected the total electron yield, even for relatively inert conductive samples like Au and HOPG.