Alternative explanation of the effect of Mossbauer gamma-line narrowing observed in the experiments by V.I. Vysotskii et al.

It is shown that, under conditions of the experiments by V.I. Vysotskii et al. [1], the effect of Sn-119 Mossbauer gamma-line narrowing, which was obs erved when a resonant screen was brought to the gamma-source, may be virtua lly entirely explained by the contribution of gamma-rays resonantly scatter ed by the screen. This explanation does not require the attraction of the m echanism discussed by the authors of [I], which consists in the influence o f the distortion caused by the screen of zero vibrations of electromagnetic vacuum an the half-life of Sn-119 excited nuclei. In the case of the gamma -source and screen made of CaSnO3 gamma-line narrowing via the contribution of resonantly scattered gamma-rays is 0.82-0.72%, depending on the thickne ss of the resonant detector used. In [1] the value obtained was 0.70 +/- 0. 42%.