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The isotropic Compton profile of BeO has been measured using a γ-ray Compton spectrometer which employs a 5 Ci annular Am241 source. The measurement is compared with the theoretical HF-LCAO Compton profile published by Lichanot et al. The measurement has also been compared with our calculations based on the RFA model employing different ionic wavefunctions. It is seen that the experimental Compton profile is in very good agreement with the HF-LCAO calculations. To determine the nature of bonding, equal-valence-electron-density Compton profile of BeO has been compared with that of the isovalent compound MgO. It is observed that the bonding in BeO is partially covalent and less ionic than MgO in agreement with the conclusions of the HF-LCAO calculation.

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In this paper we present Compton profile study on Nb x Mo 1--x (x = 0.25, 0.50, 0.75) alloys. The measurements have been made using 59.54 keV g-rays from 5 Ci Am 241 source. The results are compared with available KKR-ATA band calculations and the superposition of APW and LCGO Compton profiles of Nb and Mo. To see the organisational effects (charge transfer), we have compared our measurements with the superposition of Compton profiles of the pure constituent metals, weighted by their compositions. The good agreement between measurements and the corresponding superposition profiles suggests that there is no charge transfer in this system on alloying.

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