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 7.6×10 −7 deg −2 and is used to find the power intensity, I (Θ), 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 N 2 . 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 Wm −2 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.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Radiation Pattern for a Multiple‐Element HFGW Generator


    Beteiligte:

    Kongress:

    SPACE, PROPULSION & ENERGY SCIENCES INTERNATIONAL FORUM: SPESIF‐2009 ; 2009 ; Huntsville (Alabama)


    Erschienen in:

    AIP Conference Proceedings ; 1103 , 1 ; 582-590


    Erscheinungsdatum :

    16.03.2009


    Format / Umfang :

    9 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Gravitational Wave (GW) Radiation Pattern at the Focus of a High-Frequency GW (HFGW) Generator and Aerospace Applications

    Baker, R. M. L. / Davis, E. W. / Woods, R. C. | British Library Conference Proceedings | 2005


    A Novel Variable-Focus Lens for HFGW

    Woods, R. C. / American Institute of Physics | British Library Conference Proceedings | 2006


    Radiation Pattern for a Multiple-Element HFGW Generator

    Baker, R.M.L. / Black, C.S. | British Library Conference Proceedings | 2009


    The Value Estimation of an HFGW Frequency Time Standard for Telecommunications Network Optimization

    Harper, Colby / Stephenson, Gary | American Institute of Physics | 2007