Abstract

The optical experiments with suspended quartz crystals reflecting Laser-Doppler-Vibrometer (LDV) beam reveal an effect of crystal pendulum vibrations initiated by Sun's radiation of heavy particles. The LDV measures speed S(t) of oscillating crystal surface. The Fourier-transform of S(t) returns a spectrum of the acoustic vibrations with a few hertz frequency. The S(t) is a sine-type curve with amplitude depending on the time and space orientation of crystal axes. Maximum vibrational speed and corresponding crystal displacement from a position of equilibrium are observed when quartz piezoelectric axis is aimed toward the Sun. Experimental evidences exclude involvement of any electro-magnetic wave. The theoretical calculations for an oscillator driven by a periodic pulse-force are compared to the experimentally detected oscillations. The computations give a work done by an external force to move the crystal from its equilibrium to maximum displacement. It yields a mass of a thinkable particle that is necessary to initiate and support observed vibrations. In the case of individual particles propagating with a solar wind speed and hitting crystal, particle mass is of the order of 10 i×-21 kg. The physics of crystal-particle interaction may be related to gravitational pull of quartz atoms/ions and particle quantum properties such as matter waves.

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