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C. Nyamhere A.G.M. Das F.D. Auret A. Chawanda C.A. Pineda-Vargas A. Venter 《Physica B: Condensed Matter》2011,406(15-16):3056-3059
Deep level transient spectroscopy (DLTS) and Laplace-DLTS have been used to investigate the defects created in Sb doped Ge after irradiation with 2 MeV protons having a fluence of 1×1013 protons/cm2. The results show that proton irradiation resulted in primary hole traps at EV +0.15 and EV +0.30 eV and electron traps at EC ?0.38, EC ?0.32, EC ?0.31, EC ?0.22, EC ?0.20, EC ?0.17, EC ?0.15 and EC ?0.04 eV. Defects observed in this study are compared with those introduced in similar samples after MeV electron irradiation reported earlier. EC ?0.31, EC ?0.17 and EC ?0.04, and EV +0.15 eV were not observed previously in similar samples after high energy irradiation. Results from this study suggest that although similar defects are introduced by electron and proton irradiation, traps introduced by the latter are dose dependent. 相似文献
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Cloud Makasu 《Journal of Mathematical Analysis and Applications》2011,381(2):966-967
This paper treats the following type of nonlinear functional equations
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Cloud Makasu 《Optimization Letters》2009,3(4):499-505
In this short letter, we present an explicit upper bound for the optimal value of a bidimensional optimal stopping problem
over stopping times τ subject to a constraint , where x(.) is a geometric Brownian motion coupled with an arbitrary diffusion process y(.), θ(., .) and c(.) are given positive, continuous functions and β > 0 is a fixed constant. The present result is derived from a corresponding Lagrangian dual problem, and using a recent result
of Makasu (Seq Anal 27:435–440, 2008). Examples are given to illustrate our main result.
Partial results of this note were obtained when the author was holding a postdoc grant PRO12/1003 at the Mathematics Institute,
University of Oslo, Norway. 相似文献
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