Dependence of Radiation Emission on Chemical Bonding

The emission of Ka- and K -X rays after electron capture depends on the electron density in the 2p and 3p orbitals, respectively. If these orbitals are affected by changes of chemical bonding, the ratio of the intensities of Ka- and K -X rays may also change. For instance, in the case of Cr this ratio is about 10% higher for Cr(VI) compared with Cr(0). 

Changes of the angular correlation between particles or y rays emitted in immediate succession has been observed for nuclides with 1 = 0. These nuclides have a magnetic momentum and an electric quadrupole momentum which interact with the surrounding field. If this field is influenced by variations in chemical bonding, the angular correlation may also be affected. 

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