Transmission of 0-40 kev Electrons by Thin Films with Application to Beta-Ray Spectroscopy

This paper presents a modified self-consistent drift-diffusion-reaction model suitable for the analysis of electron-beam irradiated insulators at both short and long time scales. A novel boundary condition is employed that takes into account the reverse electron current and a fully dynamic trap-assisted generation-recombination mechanism is implemented. Sensitivity of the model with respect to material parameters is investigated and a calibration procedure is developed that reproduces experimental yield-energy curves for uncharged insulators. Long-time charging and yield variations are analyzed for stationary defocused and focused beams as well as moving beams dynamically scanning composite insulators.

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“…6 (left) and Fig. 7 (left), perfectly match those of Lane and Zaffarano 43 and are well-described by the formula of Young: 44…”

Section: -12supporting

confidence: 66%

A modified and calibrated drift-diffusion-reaction model for time-domain analysis of charging phenomena in electron-beam irradiated insulators

2018

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“…The focussed electrons were detected by a multiwire proportional counter with an entrance window of area 80 x 10 mm 2 covered with a 50 gg/cm 2 cellulose acetate foil: the foil was supported by an 80 % transmission metal grid. With this window arrangement differential absorption of electrons over the energy intervals studied was negligible [10]. The spectrometer electronic system was preset to step the coil current through a sequence of values apposite to the momentum interval under study over a defined time period.…”

Section: Methodsmentioning

confidence: 99%

Intensity ratios ofL, M, N, O subshell conversion electrons inM3 andE4 transitions

1975

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Abstract. Conversion electron spectra from three E3 and four M4 transitions in l~ 1~ 115In, lZSTe, 134Cs, 135Ba, 193Ir have been measured with the (z/2)lflJ iron-free spectrometer with momentum resolution 0.5 x 10 -3 to 1 X 10 -3. Intensity ratios of L, M, N, O conversion electrons show no significant departures from theory, but there is some evidence of error in the absolute values of outer-shell conversion coefficients calculated by the approximate method of Dragoun et al.

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“…(26) in such a way that a composite probability of escape for all the electrons generated at some location x can be obtained:…”

Section: (26)mentioning

confidence: 99%

Transmission Secondary Emission from Thin Films of Alkali Halides

Llacer¹

1968

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Transmission of 0-40 kev Electrons by Thin Films with Application to Beta-Ray Spectroscopy

Cited by 141 publications

References 9 publications

A modified and calibrated drift-diffusion-reaction model for time-domain analysis of charging phenomena in electron-beam irradiated insulators

A modified and calibrated drift-diffusion-reaction model for time-domain analysis of charging phenomena in electron-beam irradiated insulators

Intensity ratios ofL, M, N, O subshell conversion electrons inM3 andE4 transitions

Transmission Secondary Emission from Thin Films of Alkali Halides

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