http://www.lenr-canr.org/acrobat/LettsDstimulatio.pdf
*Laser Polarization Angle* “In 2003 Letts and Cravens reported that single laser beam polarization seemed to be an important factor in stimulating deuterated palladium cathodes [9]. When the laser beam polarization was at a 90 degree angle with respect to external magnetic field lines, excess power production was maximized. When the polarization angle was at a zero angle with respect to the external magnetic field lines, excess power production stopped. In 2004, Apicella and his collaborators advanced our understanding of the importance of laser polarization in reference [3]. In this paper, P polarization was shown to be enabling for the production of excess power, while the S polarization was not. The P polarization effect as reported by Apicella was with respect to the cathode surface only, not an external magnet field as reported by Letts and Cravens [9]. Apicella and his collaborators proposed that the P polarization was effective in triggering excess power due to its ability to create charge separation on the cathode surface. P polarization means that some or all components of the electric field of the laser beam are perpendicular to the cathode plane.” Explanation: The laser(s) drive dipole motion on the surface of the metal. Dipole motion on the surface of the pitted metal substrate is the powerhouse from which LENR is derived. When the laser is positioned to produce maximum dipole motion, LENR is maximized. When dipole motion is inhibited by magnetic field interference, LENR stops. By the way, the effective frequencies of the laser to produce LENR are not magical. They are based on the sizes and topology of the surface imperfections on the substrate.
