Radiation-Induced Low Energy Electron Emission from Metals

Burke, E.A.; Wall, J. A.; Frederickson, A. R.

doi:10.1109/tns.1970.4325790

Cited by 26 publications

(4 citation statements)

References 15 publications

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“…9. One obtains exactly the same emission current density if the sample-specific parameter Ax/€ = 0.01, a most reasonable value [8,9].…”

Section: B Important Parametersmentioning

confidence: 79%

Radiation-induced voltage on spacecraft internal surfaces

Frederickson

1993

IEEE Trans. Nucl. Sci.

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The charging of surfaces of insulators beneath the thermal control blankets on spacecraft has been numerically simulated. Such insulators are found on wiring harnesses, bulkhead feed-throughs, component mounting hardware, tiewraps, thermal sensors, etc. These insulators are shielded from the low energy space plasma by the grounded solar blankets. It is determined that the surfaces of these insulators rise to many tens of kV in the Earth's electron belts unless sufficient conduction to the spacecraft frame is established. Secondary electron emission is not sufficient to hold the potential to low values. The dependence of charging upon insulator thickness, electron energy spectra, and material properties is investigated. This phenomena is posited as an explanation for the Spacecraft Anomalies seen on many spacecraft, and on the CRRES satellite in particular .

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“…9. One obtains exactly the same emission current density if the sample-specific parameter Ax/€ = 0.01, a most reasonable value [8,9].…”

Section: B Important Parametersmentioning

confidence: 79%

Radiation-induced voltage on spacecraft internal surfaces

Frederickson

1993

IEEE Trans. Nucl. Sci.

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“…When the distance of the electron to the metal surface is less than electron range, the electron will escape out the metal surface and lead to a change in the net charge of the metal. The change of net charge will result in the radiation effects such as displacement current, charge accumulation, and transient electromagnetic fields and so on [1][2][3][4] . In experiments related to gamma rays, such as experimental measurement of gamma ray shielding performance, experiment of gamma ray detector calibration, total dose and dose rate effect of gamma ray on apparatus, all kinds of metal components may be used.…”

Section: Introductionmentioning

confidence: 99%

Study on Induced Current of Iron Plate Irradiated by Pulsed Gamma Rays

et al. 2018

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To obtain the transient current response law of the metal component irradiated by pulsed gamma rays, the pulsed gamma ray irradiation experiment of the iron plate was carried out on “Qiangguang-I” accelerator. The transient current of iron plate generated by pulsed gamma rays was measured and analysed, and the relationship between the amplitude of pulse current and the dose rate of gamma rays was obtained. The results show that the current response sensitivity of the iron plate is about 5.7×10-7(A/m2)/(Gy/s) when the gamma rays with the energy of 0.8 MeV irradiate the iron plate. The charge deposition rate in the iron plate can be obtained by Monte Carlo simulation, and then it can be converted to gamma ray induced current of the metal component irradiated by gamma rays.

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“…[6][7][8] Electron current formed by photoelectrons and especially Auger electrons has received much less attention, and it has been investigated mostly in macroscopic geometries in defense and space applications. 9 Although it has been considered in relation to Compton or in-core neutron detectors, its potential has not been fully utilized.…”

Section: Introductionmentioning

confidence: 99%

Prototypes of self-powered radiation detectors employing intrinsic high-energy current

et al. 2015

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Based on the experimental results for 100 ms sampling time, it would be possible to measure the time dependence of x-ray beams for x-ray tube current of 0.1 mA or higher. Significant advantages of the HEC device are that generation of its signal does not require external power supply, it can be made in any size and shape, including flexible curvilinear forms, and it is inexpensive. It remains to be determined, which of the potential applications in medical dosimetry (both in vivo and external), or radiation protection would benefit from such selfpowered detectors.

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Radiation-Induced Low Energy Electron Emission from Metals

Cited by 26 publications

References 15 publications

Radiation-induced voltage on spacecraft internal surfaces

Radiation-induced voltage on spacecraft internal surfaces

Study on Induced Current of Iron Plate Irradiated by Pulsed Gamma Rays

Prototypes of self-powered radiation detectors employing intrinsic high-energy current

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