Feasibility of photoelectron sources with sharp lines of stable energy between 20 and 80 keV

O Dragoun; A Spalek; J Kašpar; J Bonn; A Kovalík; E W Otten; D Vénos; Ch Weinheimer

doi:10.1016/j.apradiso.2010.12.015

Feasibility of photoelectron sources with sharp lines of stable energy between 20 and 80 keV

Appl Radiat Isot. 2011 Apr;69(4):672-7. doi: 10.1016/j.apradiso.2010.12.015. Epub 2011 Jan 6.

Authors

O Dragoun¹, A Spalek, J Kašpar, J Bonn, A Kovalík, E W Otten, D Vénos, Ch Weinheimer

Affiliation

¹ Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Prague, Czech Republic.

PMID: 21251842
DOI: 10.1016/j.apradiso.2010.12.015

Abstract

Photo-absorption of γ-rays in thin Al, Co, Ti, and Mo convertors was examined with the aim to produce quasi monoenergetic photoelectrons having an energy spread of 0.5-4.7eV about mean kinetic energies at discrete values between 18632 and 80321eV. The photoelectron rates were estimated for commercial photon sources of (241)Am, (119m)Sn, (125m)Te and (109)Cd with activities of 0.55-3.7GBq. Photoelectrons ejected by (241)Am γ- and X-rays from Co convertors were measured with two different electron spectrometers and obtained energy spectra were compared with Monte Carlo predictions.