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This paper investigates the single event upset sensitivity of bulk SRAMs to neutron and proton irradiations with energy range from 20 to 180 MeV. The technology sensitivity is analyzed with both quasi-monoenergetic neutron and proton experiments. Analytical and simulation based correction methods of the neutron cross section are presented and validated. Then, neutron and proton cross section are compared...
We report on irradiation induced SEU by high-energy protons and neutrons. The experiments were performed at The Svedberg Laboratory in Uppsala, Sweden, and at the Weapons Neutron Research (WNR) facility, in Los Alamos, USA. A wide range of SRAMs were used to study the differences between proton and neutron induced SEUs at different energies.
CCD imagers have been irradiated with 10 to 100 MeV protons, 45 MeV neutrons and measurements focussed on random telegraph signal (RTS) characterization. The objective is to propose a method for RTS detection and to analyse pixels behaviour with temperature, particle species and energy.
This paper discusses mechanisms and circuit-related factors that affect the degradation of linear integrated circuits from radiation in space. For some circuits there is sufficient degradation to affect performance at total dose levels below 4 krad(Si) because the circuit design techniques require higher gain for the pnp transistors that are the most sensitive to radiation. Qualification methods are...
The 'service of research on neutronics and criticality' of Valduc CEA research center, proposes several experimental facilities for neutron and gamma irradiation: two metallic reactors, a solution reactor, two accelerators.
LET spectra produced by interaction of fast protons with nuclei in silicon are calculated and compared with known data. Features of spectra are analyzed and possible explanation of observed discrepancies is proposed.
A new optical, non-destructive method of detecting and imaging single heavy charged particles using a fluorescent crystal is described. The new tool is intended for radiobiology, space radiation dosimetry and for personnel monitoring of neutron doses. The technique combines a new luminescent aluminum oxide single crystal with confocal fluorescent detection. 3D imaging of individual tracks allows for...
TCAD simulations are performed to examine the effects of scaling, well and substrate contact spacing, and supply voltage ( Vdd) on the vulnerability of devices to single-event latchup in bulk CMOS from 65-nm to 250-nm technologies. The effects of substrate depth are also shown to play a role in the sensitivity.
New simulator for heavy ion induced single event upset rate computation for space environment has been developed. Computation method is based on a new general approach. Comparisons with CREME96 results has been presented and discussed.
We present a 3-D simulation study, supported by experimental results, which clarifies the role played by the parasitic BJT activation on the interaction between generated charge and electric field during ion impact in SEB/SEGR of power MOSFET. This activation is caused by the movement of the holes deposited during the ion impact and gives rise to a huge amount of charge that is sustained by avalanche...
A proposal is presented for flying a light Unmanned Aerial Vehicle (UAV) carrying a Linear-Energy-Transfer (LET) radiation spectrometer and networked to the Athens Neutron Monitor Data Processing Center (ANMODAP), active in Space Weather Events (SWE) forecasting. The ANMODAP receives data from a large number of remote neutron monitor (NM) stations, provided in real time over the Internet, together...
Radiation hardness testing results (SEE and TID) was reported for a RadHard-by-Design, PLL-based, single chip, clock network and clock generator solution. Aeroflex Colorado Springs' RadClockTM, designed for harsh space environment applications, was tested.
A 19-cell hollow core photonic bandgap fiber with a core diameter of 20 mum and an attenuation minimum of about 11dB/km at 1590 nm was exposed to continuous Co gamma radiation and pulsed electrons up to dose values of 104 Gy and 100 Gy, respectively. The attenuation increase during continuous or after pulsed irradiation was at least 30 times or 100 times lower, respectively, than observed with the...
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