Variational calculation of the partition function of a system of electrons in a random field

A variational method is developed for calculating the partition function of a nondegenerate system of electrons in a Gaussian random field. Path integrals are used. The partition function with a model action that generalizes the one used by Feynman is calculated explicitly.Translated from IzvestiyaVysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 47–52, February, 1976.I thank V. L. Bonch-Bruevich for a helpful discussion.     

Disintegration of 1-silalactones under the influence of electron impact

It is shown that the paths of fragmentation of 1-silalactones under the influence of electron impact are determined by the ring size and remain virtually unchanged when the methyl groups attached to the silicon atom are replaced by a chlorine atom or an ethyl group. The possibility of the identification of isomeric silalactones on the basis of their mass spectra was established.