Radiation-Hardened Performance-Optimized I2L LSI
Experimental data and theoretical calculations are presented on the effects of neutron irradiation on I2L circuits. It is shown that neutron-induced degradation of I2L gate performance can be theoretically predicted with reasonable accuracy. Operation of custom designed I2L 32-bit serial shift registers to a neutron fluence level of 1 × 1014n/cm2 is demonstrated. Shift register data are also given from total dose gamma and transient upset radiation experiments with thresholds exceeding 3 × 106rads(Si) and 2 × 109rads(Si)/s, respectively.
Radiation Effects on Bipolar Integrated Injection Logic
Integrated Injection Logic (I2 L) is a new highdensity, low power bipolar LSI technology that offers major performance advantages over other bipolar and MOS/LSI technologies. Results are presented on the experimentally-determined radiation sus ceptibility of developmental unhardened I2L LSI logic cells in terms of neutron-induced displacement damage, ionizing - dose-induced surface effects and transient photoresponse.
The quantum particle in a box: what we can learn from classical electrodynamics
The problem of a charged particle enclosed in an infinite square potential well is analysed from the point of view of classical theory with the addition of the electromagnetic zero-point radiation field, with the aim to explore the extent to which such an analysis can contribute to enhance our understanding of the quantum behavior. First a proper treatment is made of the freely moving particle subject to the action of the radiation field, involving a frequency cutoff ωc. The jittering motion and the effective structure of the particle are sustained by the permanent action of the zero-point field. As a result, the particle interacts resonantly with the traveling field modes of frequency ωc in its proper frame of reference, which superpose to give rise to a modulated wave accompanying the particle. This is identified with the de Broglie wave, validating the choice of Compton’s frequency for ωc. For the stationary states of particles confined in the potential well, the Lorentz force produced by the accompanying field is shown to lead to discrete values for the mean speed and to an uneven probability distribution that echoes the corresponding quantum distribution. The relevance of the results obtained and the limitations of the classical approach used, are discussed in the context of present-day stochastic electrodynamics.