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Carrier structure fragmentation

The mass spectrum of chlorpromazine hydrochloride was obtained using a Shimadzu PQ-5000 mass spectrometer [13], In this study, the parent ion was collided with helium as the carrier gas, and an ionization beam energy of 70 eV was used. The mass spectrum thusly obtained is presented in Figure 7. The molecular ion peak was observed at m/z = 318.2, and the base peak was at m/z = 58.2. Assignments for the fragmentation pattern, the peak relative intensities, and the proposed structures are found in Table 5. [Pg.116]

Carrier, G., A. Panaye, an J.-E. Dubois., Topological Structural Information in the CAS File Statistical Occurrences of DARC Concentric Fragments 1. Basic Carbon Substructures. J. Chem. Inf. Comput. Sci., 1990 30, 110-121. [Pg.219]

Abstract. The spectral dependence of photoluminescence and optical conductivity for the solid C6o and Cd-Q)0 films (with the admixture of C70 fullerenes) are studied under irradiation by argon ions with different doses. The fragmentation of the C6o molecules and the formation of the radiation defects, which are accompanied by appearance and increase in the intensity of the new component of the excitons emission, by decrease in the high-frequency optical conductivity spectral dependence to an analogous characteristic for the amorphous carbon films are observed with an increase in the radiation dose. This testifies that with the destruction of the molecules structure by ions the growth of the number of electrons, which are in the sp2 -hybridized state takes place. Furthermore, with the appearance of radiation defects the formation of the traps of the free charge carriers, which lead to a total decrease in the optical conductivity occurs. [Pg.111]

The structure of the porous media can also be shaped by mechanical and electrostatic forces, e.g., sheeting of granules at conveyor walls (Yao et al., 2004), deposition of solid grains in the porous media, and fragmentation of catalyst carriers. Simple examples of mechanical diagenesis of porous media were already illustrated in Section II.D.4. In this section, we first describe the morphological operation of skeletonization and the methods used for the... [Pg.160]

Among the imperfections responsible for activation, the structural imperfections probably take a prominent part only when the number of defects produced by the irradiation is not negligible compared to the number of pre-existing imperfections, as in the case of irradiations with particles such as neutrons and fission fragments, for example. Furthermore, these imperfections should be efficient this means that, owing to their donor or acceptor character as well as their position in the forbidden band, they modify effectively the character of the surface, by influencing, for instance, the number of free carriers. [Pg.115]


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See also in sourсe #XX -- [ Pg.238 , Pg.239 , Pg.240 , Pg.241 ]




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Carrier structure

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