On Thu, Mar 3, 2016 at 10:48 AM, Stephen Cooke <stephen_coo...@hotmail.com> wrote:
[Quoting an abstract:] In spite of the fact that the X-ray surface > brightness is estimated to be at nearly CXB (Cosmic X-ray Background) > level, the X-ray spectrum shows significant deviations in relation to Al-K > and Si-K fluorescence X-rays. Aluminum (26Al, trace) has electron capture as a decay mode and silicon (32Si, trace) has beta decay as a decay mode. Silicon was discussed a few weeks ago on this list in connection with ball lightning. To hazard a mechanism: cosmic rays or unattenuated solar x-rays may be triggering these decay modes in aluminium and silicon on the surface of the moon. As a follow on to this study, additional characteristic lines to look for would be K-K or K-L lines for potassium (40K, 0.012 percent), which has both electron capture and beta decay as decay modes. Eric
