A simple model for determining photoelectrongenerated radiation scaling laws
Abstract
The generation of radiation via photoelectrons induced off of a conducting surface was explored using a simple model to determine fundamental scaling laws. The model is onedimensional (smallspot) and uses monoenergetic, nonrelativistic photoelectrons emitted normal to the illuminated conducting surface. Simple steadystate radiation, frequency, and maximum orbital distance equations were derived using smallspot radiation equations, a sin{sup 2} type modulation function, and simple photoelectron dynamics. The result is a system of equations for various scaling laws, which, along with model and user constraints, are simultaneously solved using techniques similar to linear programming. Typical conductors illuminated by lowpower sources producing photons with energies less than 5.0 eV are readily modeled by this smallspot, steadystate analysis, which shows they generally produce low efficiency ({eta}{sub rsL}<10{sup {minus}10.5}) pure photoelectroninduced radiation. However, the smallspot theory predicts that the total conversion efficiency for incident photon power to photoelectroninduced radiated power can go higher than 10{sup {minus}5.5} for typical real conductors if photons having energies of 15 eV and higher are used, and should go even higher still if the smallspot limit of this theory is exceeded as well. Overall, the simple theory equations, model constraint equations, and solution techniques presented provide a foundation for understanding,more »
 Authors:

 Los Alamos National Lab., NM (United States)
 Publication Date:
 Research Org.:
 Los Alamos National Lab., NM (United States)
 Sponsoring Org.:
 Department of Defense, Washington, DC (United States)
 OSTI Identifier:
 10129658
 Report Number(s):
 LA12674
ON: DE94006130; TRN: 94:005538
 DOE Contract Number:
 W7405ENG36
 Resource Type:
 Technical Report
 Resource Relation:
 Other Information: PBD: Dec 1993
 Country of Publication:
 United States
 Language:
 English
 Subject:
 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRIC CONDUCTORS; SCALING LAWS; PHOTOELECTRIC EMISSION; EFFICIENCY; 665300; INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
Citation Formats
Dipp, T M, and Air Force Office of Scientific Research, Bolling AFB, DC. A simple model for determining photoelectrongenerated radiation scaling laws. United States: N. p., 1993.
Web. doi:10.2172/10129658.
Dipp, T M, & Air Force Office of Scientific Research, Bolling AFB, DC. A simple model for determining photoelectrongenerated radiation scaling laws. United States. https://doi.org/10.2172/10129658
Dipp, T M, and Air Force Office of Scientific Research, Bolling AFB, DC. Wed .
"A simple model for determining photoelectrongenerated radiation scaling laws". United States. https://doi.org/10.2172/10129658. https://www.osti.gov/servlets/purl/10129658.
@article{osti_10129658,
title = {A simple model for determining photoelectrongenerated radiation scaling laws},
author = {Dipp, T M and Air Force Office of Scientific Research, Bolling AFB, DC},
abstractNote = {The generation of radiation via photoelectrons induced off of a conducting surface was explored using a simple model to determine fundamental scaling laws. The model is onedimensional (smallspot) and uses monoenergetic, nonrelativistic photoelectrons emitted normal to the illuminated conducting surface. Simple steadystate radiation, frequency, and maximum orbital distance equations were derived using smallspot radiation equations, a sin{sup 2} type modulation function, and simple photoelectron dynamics. The result is a system of equations for various scaling laws, which, along with model and user constraints, are simultaneously solved using techniques similar to linear programming. Typical conductors illuminated by lowpower sources producing photons with energies less than 5.0 eV are readily modeled by this smallspot, steadystate analysis, which shows they generally produce low efficiency ({eta}{sub rsL}<10{sup {minus}10.5}) pure photoelectroninduced radiation. However, the smallspot theory predicts that the total conversion efficiency for incident photon power to photoelectroninduced radiated power can go higher than 10{sup {minus}5.5} for typical real conductors if photons having energies of 15 eV and higher are used, and should go even higher still if the smallspot limit of this theory is exceeded as well. Overall, the simple theory equations, model constraint equations, and solution techniques presented provide a foundation for understanding, predicting, and optimizing the generated radiation, and the simple theory equations provide scaling laws to compare with computational and laboratory experimental data.},
doi = {10.2172/10129658},
url = {https://www.osti.gov/biblio/10129658},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {12}
}