We calculate the values for the High‐Frequency Gravitational Wave (HFGW) radiation pattern for a multiple‐element HFGW generator in the “far field,” that is the field many wavelengths away from the generator. We extend‐Baker, Davis and Woods (2005) for a single GW‐emission pair to include an in‐phase, linear array of N such pairs as discussed in Baker, Stephenson and Li (2008). We calculate new values for the variable K in Baker, Davis and Woods (2005) by decreasing the integration interval of Θ from 10° to 1°. This provides us with a K value of increased accuracy. The improved K has a value of and is used to find the power intensity, of a single GW source in terms of watts per square degree over the radiation‐pattern cap The Θ half‐power‐point angle for a single GW‐emission pair at their mid‐way‐point focus is also recalculated and found to be 47.5°. We utilize the result of Romero and Dehnen (1981) and Dehnen and Romero (2003) for an increase in HFGW flux (in a linear array of N in‐phase radiation elements) proportional to This result is employed to compute the half‐power‐point angle, idealized radiation cap area and the HFGW flux/power‐of‐a‐single‐radiation‐element at a distance of several wavelengths away, for example one meter from the end of a linear and a double‐helical array in as a function of N. The notional picture shown of an idealized needle‐like radiation beam is in the far field. It is described at a distance far enough from the generator that it is beyond the conventional diffraction limit of a beam’s radiation‐pattern cap area. It is found that the HFGW flux calculated is small, but that the Li‐Baker detector may be capable of sensing the HFGWs generated in a laboratory setting.
Radiation Pattern for a Multiple‐Element HFGW Generator
SPACE, PROPULSION & ENERGY SCIENCES INTERNATIONAL FORUM: SPESIF‐2009 ; 2009 ; Huntsville (Alabama)
AIP Conference Proceedings ; 1103 , 1 ; 582-590
16.03.2009
9 pages
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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