HIGH FREQUENCY GRAVITATIONAL WAVE OF A COMPOSITE TOROIDAL ELECTROMAGNETIC RESONANT SYSTEM
LUO JUNa, LI FANG-YUb, TANG MENG-XIc
a Center for Gravitational Experiment, Huazhong University of Science and Technology, Wuhan 430074, China; b Department of Physics, Chongqing University, Chongqing 630044, China; c Department of Physics, Zhongshan University, Guangzhou 510275, China
Abstract Starting with the Einstein equation of weak gravitational field, a new scheme of generating high frequency gravitational wave by composite toroidal electromagnetic resonant system is discussed. The system is a composite toroidal electromagnetic resonant cavity consisting of a vacuum and a dielectric regions. In the focal region of the cavity under the condition of allowable ohmic losses in the cavity walls, the amplitude of the standing gravitational wave is almost two orders of magnitude higher than that in usual cavity with the same volume. A concrete numerical calculation shows that a composite toroidal electromagnetic resonant system with a volume 2×108cm3 could generate the standing gravitational wave with an amplitude h=10-33, wavelength λg=40 cm in its focal region. This is comparable to the typical order of magnitude of several astrophysical sources, and it would be displayed by electromagnetic detection due to very high frequency.