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types of traps
It is shown that the carrier transport in a high-resistivity (a-Si:H):Er film (resistivity ~109 ? cm) proceeds by the mechanism of unipolar-injection space-charge-limited currents controlled by two types of traps.
      
Trap parameters, namely, the densities and ionization energies of acceptor and donor centers (~1019 cm-3 for both types of traps; 0.85-0.95 eV and 0.4 eV, respectively) are estimated by analyzing the current-voltage characteristics.
      
Annealing at 100-250°C was found to result in the formation of two types of traps with the levels Ec-0.32 eV and Ev+0.29 eV.
      
Two types of traps are found, namely, traps for holes and electrons, whose density can be varied during deposition of the monolayer by the choice of intensity of illumination and by the method of passivation of the surface.
      
According to this model, two types of traps with binding energies of 2.4 and 4.1 eV are present in graphite.
      
However, these studies were made with different batches of synthetic pheromones, with different types of traps and according to different procedures, so the observed differences might not reflect true geographic variation.
      
A linear positron trapping model based on an inhomogeneous distribution of two different types of traps has been developed by using and extending the principles of the simple linear trapping model for one type of traps.
      
The present paper treats both detrapping and the effects of positron diffusion for an arbitrary number of different types of traps, and develops a perturbation-theory solution for the general case.
      
The present paper treats both detrapping and the effects of positron diffusion for an arbitrary number of different types of traps, and develops a perturbation-theory solution for the general case.
      
However, the immature rodents of both sexes were distributed more evenly among the three types of traps and showed no distinct preferences.
      
and different types of traps were investigated in Slovakian oak forests.
      
Although both types of traps reflected differences in population density, we found Trappit more efficient than Ekolex especially forBlatta orientalis.
      
This paper describes three types of "traps" or collusive marital agreements-incompetence traps, complementarity traps, and success traps-in which the mates renounce or forgo competent functioning in vital areas of marital roles and experience.
      
The types of traps and trapping parameters obtained by various workers are given.
      
The types of traps and trapping parameters obtained by various workers are given.
      
Catch rates of black army cutworm moths,Actebia fennica (Lepidoptera: Noctuidae), were determined for different types of traps and different dispenser loads of sex attractant.
      
Male-female ratios were significantly lower for both types of traps when ethanol was included in the bait than for lineatin alone or with α-pinene.
      
Three different types of traps were evaluated for a semiochemical-based trapping method for Hylotrupes bajulus (L.) (Cerambycidae).
      
Adult trapping utilizes many different types of traps to attract a wider variety of mosquito species.
      
Both types of traps were placed at 8 10 m of height.
      
 

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