Verfahren zur Beeinflussung der Arbeitsfrequenz eines Schwingquarzes (2007)
DE 102005054745 A1 UPAB: 20071015 NOVELTY - The method involves charging an oscillating quartz resonator with an electromagnetic radiation with a wavelength of less than 2.5 nano meter, such that an...
Silicon carbide radiation detector for harsh environments (2002)
Metzger, S., Henschel, H., Köhn, O., Lennartz, W.
We used commercial off-the-shelf (COTS) silicon carbide (SiC) ultraviolet photodiodes for measuring gamma dose rates at high temperature. We tested them with Co-60 gamma dose rates between 0.03...
Rosenstock, W., Köble, T., Metzger, S., Lennartz, W., Henschel, H., Schoop, K., ...
Neutrons may produce charged particles, which can affect modern electronic components. Depending on their energy, the recoils may generate sufficient electrical charges to change the logic state of a...
Radiation effects in ultraviolet sensitive SiC photodiodes (2000)
Henschel, H., Köhn, O., Lennartz, W., Metzger, S.
We tested SiC photodiodes with Co-60 gammas, 32 MeV protons and 14 MeV neutrons. The UV-photocurrent decreased to about 50% of its initial value at a total gamma dose of 40 kGy (Air). Nearly the same...
Low energy proton testing of space electronics at "JULIC" (2000)
Henschel, H., Köhn, O., Lennartz, W., Metzger, S., Boge, H.G., Bräutigam, W., ...
A proton irradiation facility was built under collaboration between Fraunhofer-INT and the Nuclear Physics Institute of the Research Centre Jülich (formerly KFA Jülich). It is designated for the...
Neutron irradiation test of a DCM 14 C Version 2.9. Final results: 31st of October, 2000 (2000)
Arlt, R., Henschel, H., Köble, T., Lennartz, W., Metzger, S., Rosenstock, W., ...
Since 1997 the International Atomic Energy Agency (IAEA) and Euratom Safeguards Office (ESO) have fielded Digital Image Surveillance (DIS) systems based on the DCM 14 technology. Recently problems...
Radiation hardness of a low-cost point-to-point fibre optic data communication system (1998)
Henschel, H., Köhn, O., Lennartz, W., Schmidt, H.
We present an experimental determination of the radiation response of commercial fibre optic transmitters and receivers for Local Area Networks. The transmission during irradiation was tested with...
Comparison between fast neutron and gamma irradiation of optical fibres (1998)
Henschel, H., Köhn, O., Lennartz, W., Metzger, S., Schmidt, H., Rosenkranz, J., ...
A variety of undoped multimode step-index fibres and Gedoped single mode and graded index fibres is irradiated by 14 MeV neutrons an Co60 gamma rays up to the same total dose. Radiation-induced loss...
Comparison between fast neutron and gamma irradiation of optical fibres (1998)
Henschel, H., Köhn, O., Lennartz, W., Metzger, S., Schmidt, H.U., Rosenkranz, J., ...
A variety of undoped multimode step-index fibres and Gedoped single mode and graded index fibres is irradiated by 14 MeV neutrons an Co60 gamma rays up to the same total dose. Radiation-induced loss...
Gamma and neutron irradiation of optoelectronic devices (1996)
Lischka, H., Henschel, H., Köhn, O., Lennartz, W., Schmidt, H.
Active optoelectronic devices such as light emitting diodes (LEDs), laser diodes (LDs), and photodiodes (PDs) were evaluated for degradation under gamma and 14 MeV neutron irradiation. Dose rates,...
Radiation effects in light emitting diodes, laser diodes, photodiodes, and optocouplers (1994)
Lischka, H., Köhn, O., Lennartz, W., Schmidt, H.U.
A variety of commercially available LEDs, LDs, PDs, and optocouplers from two german manufacturers were irradiated at a flash X-ray source, a 60Co gamma ray source, and a 14 MeV neutron generator....
Radiation effect in optoelectronic devices (1994)
Lischka, H., Clemens, P., Henschel, H., Köhn, O., Lennartz, W., Schmidt, H.U.
Active optoelectronic devices such as light emitting diodes (LEDs), laser diodes (LDs), photodiodes (PDs), and optocouplers (OCs) were evaluated for degradation under gamma, 14 MeV neutron, and flash...
Radiation sensitivity of light emitting diodes -LED-, laser diodes -LD- and photodiodes -PD- (1992)
Henschel, H., Lennartz, W., Lischka, H.
Commercially available diodes were irradiated at a flash X-ray source, a Co 60 gamma ray source, and a 14 MeV neutron generator. During irradiation at the Co 60 source the light output of the LEDs...
Neutronenflußmessung mit Aktivierungsfolien und Spaltkammern (1988)
Bengel, H.G., Lennartz, W., Rosenstock, A., Rosenstock, W., Schulze, J.
Zur Bestimmung des Neutronenflusses am INT-Neutronengenerator wurden Spaltkammern und Aktivierungsfolien zu einer Meßmethode kombiniert, die die Nachteile der einzelnen Meßverfahren nicht mehr...