Getty, Stephanie A.Brinckerhoff, William B.Cornish, Timothy J.Grubisic, AndrejLi, XiangUckert, Kyle2018-12-112018-12-112015-09-16http://hdl.handle.net/11603/1221535 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Public Domain Mark 1.0This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Lawtwo-step lasertime-of-flightmass spectrometersitu analysisplanetary surfacesText