Looking for polarization bremsstrahlung in the midst of inner-shell ionization: Analysis of the x-ray spectrum in electron interactions with thin-film targets

Review of absolute doubly differential cross-section experiments and cross-section ratios for electron bremsstrahlung from rare gas atom and thin-film targets

“…There have been only four absolute cross-section measurements of the doubly differential electron bremsstrahlung cross sections on thin-film targets: Motz and Placious (1958), who used NaI detectors, Rester et al (1970), Quarles and Heroy (1981), and Ambrose et al (1987). There have been two relative measurements designed to investigate the photon energy dependence of the cross section: Ambrose et al (1997) and Quarles and Portillo (1999). There have been four relative measurements on gas targets : Hippler et al (1981), Quarles (1981,1982), and Estep and Quarles (1987).…”

“…We will review the thin-film absolute measurements of Ambrose et al (1987), the relative measurements on thin-film targets of Quarles and Portillo (1999), and the absolute measurements on free gas atom targets of Portillo and Quarles (2003b). (1987) Ambrose, Altman and Quarles (AAQ) (1987) measured the radiation at 901 for 50, 75 and 100 keV electrons on thin-film targets with atomic numbers ranging from 6 to 92.…”

“…Recent relative thin-film target experiments: Quarles and Portillo (1999) The failure to see clear evidence for a PB contribution in the data of AAQ led us to undertake several new experiments. The first experiments used thin-film targets at 25 and 50 keV.…”

“…6. Comparison of the ratio of Ag to Al cross-section data for 25 keV from Portillo and Quarles (1999) with calculations of ordinary bremsstrahlung from Kissel et al (1983) and total bremsstrahlung in the stripping approximation from the formulae in Avdonina and Pratt (1999). The cross-section data are relative.…”

The prediction of thick target electron bremsstrahlung spectra in the 0.25–50 keV energy range

“…After the pioneering work of Kulenkampff [9], several measurements were carried out in order to obtain absolute [10][11][12] or relative [13][14][15][16] determinations of differential electron bremsstrahlung cross-sections in this kind of targets. Similar experiments were also performed in gas samples [17][18][19][20][21].…”