11. Thus, London interactions are caused by random fluctuations of electron density in an electron cloud . 12. The difference between an ionic or covalent bond is the location of the bonding electron cloud . 13. An atom consists of an electron cloud that surrounds a dense more . . . " ') 14. Electron cloud growth can be a grave limitation in bunch currents and total beam currents if multipacting occurs.15. X-ray photons scatter by interaction with the electron cloud of the material, neutrons are scattered by the nuclei. 16. Free electron clouds are not electromagnetic. 17. It consists of a dense core called the atomic nucleus surrounded by a space called the electron cloud . 18. The fluorine's electron cloud is definitely less shielded from the nuclear charge and will thus be less polarizable. 19. Different bonding orbitals are distinguished that differ by electron configuration ( electron cloud shape ) and by energy levels. 20. Multipacting can occur when the electron cloud dynamics can achieve a resonance with the bunch spacing of the accelerator beam.
