Measurements of Neutron-absorbing Elements on Mercury’s Surface with the MESSENGER Neutron Spectrometer

(1) Johns Hopkins University Applied Physics Laboratory, Space Department, Laurel, United States (david.j.lawrence@jhuapl.edu), (2) Planetary Science Institute, Tucson, AZ, USA, (3) National Museum of Natural History, Smithsonian Institution, Washington, DC, USA., (4) University of Arizona, Tucson, AZ, USA, (5) Computer Science Corporation, Lanham-Seabrook, MD, USA, (6) Carnegie Institution of Washington, Washington, DC, USA