Accession Number : AD0634517

Title :   LIMITATIONS IN THE ENERGY RESOLUTION OF SLOW ELECTRONS,

Corporate Author : AEROSPACE RESEARCH LABS OFFICE OF AEROSPACE RESEARCH WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Friz, Walter

Report Date : APR 1966

Pagination or Media Count : 34

Abstract : The study delineates quantitatively the limiting factors in resolution in electron spectrometry at very low energies. It is shown that monochromatic electron beams with energy spread Delta-E/E=0.001 may be produced well below 1 eV provided the necessary and quite possible technological effort is being made. It appears that in conjunction with standard detection schemes space charge effects and their restrictions on beam intensities pose a lower energy limit for attainable monochromatic beams. However, using coincidence counting detection schemes much lower beam intensities will suffice and then physical-chemical surface effects on the electrodes and their influence on the electron trajectories will be determining this limit. (Author)

Descriptors :   (*ELECTRON BEAMS, ENERGY), (*ELECTRON OPTICS, RESOLUTION), BETA RAY SPECTRUM, SPACE CHARGE, ELECTRODES, PARTICLE TRAJECTORIES, ELECTROSTATICS, MAGNETIC FIELDS, PHOTOELECTRIC EFFECT, THERMIONIC EMISSION, SECONDARY EMISSION

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE