EXPERIMENTS ON THE GRAVITY EFFECT ON THE AG-109 GAMMA-RESONANCE

The temperature dependence of the Ag-109 gamma-ray self-absorption was investigated for the horizontal and vertical directions of emission. The source was a single-crystal silver plate containing atoms of paren t radionuclide Cd-109. Gamma-radiation of this gamma-source and that o f the monitoring gamma-source, Co-57, were registered by a pair of Ge( Li)-detectors. As a result of cooling the source from 77 K to similar to 12 K a relative decrease was observed of the intensity of the horiz ontally emitted gamma-rays equal to 0.00064 +/- 0.00044. For the verti cal direction the corresponding intensity change turned out to be -0.0 0047 +/- 0.00051. Although these data, as one would see, give some evi dence for the possible effect of the gravitation on the resonant gamma -ray absorption, future measurements must show if these results aren't a consequence of any apparatus effect. The ways for developments in t his study are discussed and some hindrances are considered.