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Doridant A.,CNRS Electronic Systems Institute | Doridant A.,TRAD Tests and Radiations | Jarrix S.,CNRS Electronic Systems Institute | Raoult J.,CNRS Electronic Systems Institute | And 5 more authors.
IEEE Transactions on Nuclear Science | Year: 2012

Space or military electronic components are subject to both electromagnetic fields and total ionizing dose. This paper deals with the electromagnetic susceptibility of a discrete low frequency transistor subject to total ionizing dose deposition. The electromagnetic susceptibility is investigated on both non-irradiated and irradiated transistors mounted in common emitter configuration. The change in susceptibility to 100 MHz-1.5 GHz interferences lights up a synergy effect between near field electromagnetic waves and total ionizing dose. Physical mechanisms leading to changes in signal output are detailed. © 2012 IEEE.


Bensoussan A.,Thales Alenia | Marec R.,Thales Alenia | Muraro J.L.,Thales Alenia | Portal L.,Thales Alenia | And 5 more authors.
Microelectronics Reliability | Year: 2013

Two European GaAs power P-HEMT MMIC processes using representative test structures have been characterized in situ when irradiated by high energy heavy ion radiation beam (420 MeV Xenon source, LET = 46.6 MeV cm2/mg), and under various worst case bias including DC and high drive RF conditions applied. The test methodology conducted has been carefully defined in order to help to early discriminate failure mechanisms induced by biasing stresses from those possibly induced by heavy ion irradiation environment. It is demonstrated that the two P-HEMT processes tested under worst case application biasing conditions (both cumulated DC and RF) are immune to heavy ion radiation stress representative of harsh space environments. © 2013 Elsevier Ltd. All rights reserved.


Beaumel M.,Airbus | Herve D.,Airbus | Van Aken D.,ON Semiconductor | Pourrouquet P.,TRAD Tests and Radiations | Poizat M.,European Space Agency
IEEE Transactions on Nuclear Science | Year: 2014

The single event effects (SEEs) sensitivity of the HAS2 CMOS image sensor has been characterized with protons, electrons, and heavy ions. The read-out integrated circuit (ROIC) of the sensor was found to be sensitive to charged particle-induced upset. Vulnerable elements of the ROIC were identified by the analysis of image corruption events under beam. The charge collected from the passage of protons and electrons in the photosensitive zone has also been measured and compared to the results of Monte Carlo simulations. The charge collection depth of the sensor was found to differ significantly from the epitaxial layer thickness of the device. © 2013 IEEE.


Wang P.-X.,3D Plus SAS 408 | Gil M.,3D Plus SAS 408 | Widmer F.,TRAD Tests and Radiations | Garcia P.,TRAD Tests and Radiations
Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS | Year: 2013

We report on results of SEE (SEL, SET) tests of LVDS Quad Drivers and Receivers from different manufactures. In particular, this report provides a good way to characterize SET from user point of view, calculated the error rate as SEU, and analyzes the SET result and determines if data are lost during an SET event; © 2013 IEEE.


Deneau C.,Montpellier University | Vaille J.-R.,Montpellier University | Vaille J.-R.,University of Nimes | Dusseau L.,Montpellier University | And 5 more authors.
IEEE Transactions on Nuclear Science | Year: 2011

Displacement damage dose was measured over 26 months on the CARMEN-2 experiment using the feedback loop of an Optically Stimulated Luminescence (OSL) sensor. These in-flight results are analyzed and discussed addressing the issue of temperature dependence and energy correction. A comparison between in-flight data and ground tests measurement validates this method. © 2011 IEEE.


Velo Y.G.,Montpellier University | Boch J.,Montpellier University | Roche N.J.-H.,Montpellier University | Perez S.,Montpellier University | And 7 more authors.
IEEE Transactions on Nuclear Science | Year: 2010

Accelerated test techniques are needed in order to qualify bipolar devices intended for use in low dose rate environments. Indeed, low dose rate is known to enhance degradation of bipolar devices. Moreover, the bias of microcircuits is known to play a significant role in device degradation. In this work, bipolar microcircuits are irradiated with different bias configurations during the irradiation. It is shown that the bias configuration leading to the worst-case degradation is dose-rate dependent. Moreover, if a time-saving evaluation technique based on dose-rate switching is to be used, the effect of bias has to be investigated. In this work, this time-saving technique, the switched dose-rate technique, is applied for the first time to evaluate the behavior of dynamics parameters of a bipolar IC irradiated all pins grounded, and also to evaluate the behavior of static and dynamics parameters of bipolar ICs irradiated under several bias configurations. Good agreement is found between the predictive curve obtained with the switched dose-rate technique and the low dose rate data. © 2010 IEEE.


Trademark
TRAD Tests and Radiations | Date: 2015-11-18

Computer software for the measurement and analysis of radiation doses in the field of space radiation and shielding optimization. Information on education; information on education via computer networks, editing and publication of books and magazines, electronic publication of books and periodicals online; film production; production of CDs and DVDs in the field of space radiation and shielding optimization; organization of exhibitions for educational purposes, organization of exhibitions for training purposes, practical training, providing online non-downloadable electronic publications, namely, articles, e-zines, and e-books relating to the measurement and analysis of radiation doses in the field of space radiation and shielding optimization. Computer programming, computer software design, updating of computer software, lending, rental of computer software, installation of computer software, engineering, technical project studies relating to the measurement and analysis of radiation doses in the field of space radiation and shielding optimization, research and development of new products for others, engineering services, namely, performance monitoring of products for others, engineering services, namely, simulation of behavior in a variety of different environments.


Trademark
TRAD Tests and Radiations | Date: 2015-11-18

Radiation effect modeling software for application in the nuclear field. Computer programming services.


Trademark
TRAD Tests and Radiations | Date: 2011-03-29

Apparatus and instruments for measuring doses of received radiation; apparatus for permanently recording physical data in the field of radiation, namely, electronic recorders for physical data in the field of radiation; equipment for processing information of which a permanent record has been made, namely, computer central processing units; dosimeters for non-medical use, dosimeters for non-medical purposes used to record data collected; sensors, excluding solar sensors, namely, radiation sensors; data drives, namely, digital disc drives; software, namely, recorded programs for control in the field of radiation delivery; calculation software, namely, recorded programs for control in the scientific and technical fields of radiation; audio and video compact discs, namely, pre-recorded audio and video compact disks featuring radiation control; videograms, namely, downloadable video files featuring radiation control; digital compact discs, namely, pre-recorded digital compact disks featuring radiation control; monitors in the nature of computer programs for control in the field of radiation. Medical apparatus and instruments, namely, medical apparatus for therapeutic radiation delivery control, dosimeters for medical use, dosimeters for medical purposes used to make a permanent record of data collected.


Fagerholm P.,Linköping University | Lagali N.S.,Linköping University | Merrett K.,University of Ottawa | Jackson W.B.,University of Ottawa | And 6 more authors.
Science Translational Medicine | Year: 2010

Corneas from human donors are used to replace damaged tissue and treat corneal blindness, but there is a severe worldwide shortage of donor corneas. We conducted a phase 1 clinical study in which biosynthetic mimics of corneal extracellular matrix were implanted to replace the pathologic anterior cornea of 10 patients who had significant vision loss, with the aim of facilitating endogenous tissue regeneration without the use of human donor tissue. The biosynthetic implants remained stably integrated and avascular for 24 months after surgery, without the need for long-term use of the steroid immunosuppression that is required for traditional allotransplantation. Corneal reepithelialization occurred in all patients, although a delay in epithelial closure as a result of the overlying retaining sutures led to early, localized implant thinning and fibrosis in some patients. The tear film was restored, and stromal cells were recruited into the implant in all patients. Nerve regeneration was also observed and touch sensitivity was restored, both to an equal or to a greater degree than is seen with human donor tissue. Vision at 24 months improved from preoperative values in six patients. With further optimization, biosynthetic corneal implants could offer a safe and effective alternative to the implantation of human tissue to help address the current donor cornea shortage.

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