Mars mission laser tool heads to JPL
- Nancy Ambrosiano
- Communications Office
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Star Wars photon gun will give Mars rover hands-free rock ID
LOS ALAMOS, New Mexico, September 21, 2010—The ChemCam instrument has completed the first short leg of its long trip to Mars, arriving at the Jet Propulsion Laboratory from Los Alamos National Laboratory for installation aboard the next Mars rover, due to launch in 2011. The NASA Mars Science Laboratory Project's rover, Curiosity, will carry the newly delivered laser instrument to reveal which elements are present in Mars’ rocks and soils up to 7 meters (23 feet) away from the rover.
By firing intense pulses of laser light at potentially distant targets, the ChemCam instrument uses a technique called laser-induced breakdown spectroscopy (LIBS), to measure the chemical content of the target samples. The laser beam zaps a pinhead-sized area on the target, vaporizing it. A spectral analyzer then peers closely at the flash of light from the vaporized sample. Atoms ablated in ionized states emit light and each sample yields spectral emissions at unique wavelengths revealing the elements present in the material.
Like fingerprints, the emission line wavelengths can be matched to a library of known chemical compounds. Even dust-covered rocks will reveal their inner secrets to the ChemCam interrogation. On such samples the laser first cleans away the dust or weathering coatings prior to performing the rock analysis. There is no need to drive the rover to within reach of the target rock.
ChemCam is the first instrument of its kind. “We brought together a lot of new ideas to make this instrument a reality. It has been exciting to see this invention come together,” said Roger Wiens, the instrument’s principal investigator, from Los Alamos.
“ChemCam will act as a geochemical observatory, providing composition data to understand if Mars was, is, or will be a habitable world. It will also help the rover team pick the most promising targets on which to use the rover’s other instruments,” added Sylvestre Maurice, the French lead for the instrument. Wiens and Maurice started working together ten years ago on the early precursor to the current ChemCam instrument. A sizeable team of U.S. and French scientists will work together under their leadership to operate the instrument on Mars and interpret the data.
The Curiosity rover, ChemCam’s host vehicle, is by far the biggest and most capable robot ever destined for Mars. It is nuclear powered and, at a weight of more than 900 kg (1984 lbs), is comparable in size to a small car. The capsule that will be used to carry the rover into the Mars atmosphere is even larger than the Apollo capsule that housed three astronauts for missions to the Moon. ChemCam is one of 10 instrument packages contained on the rover. The other instruments are capable of identifying minerals, sniffing out organic materials, observing the weather and radiation environment, and drilling several centimeters into the Martian rocks. Curiosity is due to launch from Florida in November of 2011 and will arrive at Mars in August 2012.
The ChemCam instrument was conceived, designed, and built by a U.S.-French team, led by Los Alamos National Laboratory in New Mexico, JPL in California, CNES and the CESR at the Observatoire Midi-Pyrénées in Toulouse.
JPL, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Science Laboratory Project for the NASA Science Mission Directorate, Washington.
The Centre National d’Etudes Spatiales (CNES) is the government agency responsible for shaping and implementing France’s space policy in Europe. Its task is to invent the space systems of the future, bring space technologies to maturity and guarantee France’s independent access to space.
CNES is a pivotal player in Europe’s space programme, and a major source of initiatives and proposals that aim to maintain France and Europe’s competitive edge. It conceives and executes space programmes with its partners in the scientific community and industry, and is closely involved in many international cooperation programmes—the key to any far-reaching space policy.
The Observatory Midi-Pyrénées (OMP) is an institute which consists of eight research laboratories of the University Paul Sabatier (UPS) around the “Sciences of the Universe, Planet Earth, and Environment.” Its primary mission is to conduct continuous and systematic observations of the Earth and the Universe.
As part of OMP, the Centre for the Study of Radiation in Space (CESR) is a leading French research laboratory in space astrophysics. It pursues research in four broad thematic areas: space plasmas, planetology, high-energy universe (as seen via X- and gamma radiation), and cold universe (infra-red and submillimeter radiation). A significant part of the activity of the laboratory is devoted to the conception and development of instrumentation for space research projects.
Los Alamos National Laboratory, a multidisciplinary research institution engaged in strategic science on behalf of national security, is operated by Los Alamos National Security, LLC, a team composed of Bechtel National, the University of California, The Babcock & Wilcox Company, and URS for the Department of Energy's National Nuclear Security Administration.
Los Alamos enhances national security by ensuring the safety and reliability of the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction, and solving problems related to energy, environment, infrastructure, health, and global security concerns.