Phoenix Mars Mission--the thermal evolved gas analyzer

Journal of the American Society for Mass Spectrometry
John H HoffmanHilton Hammack

Abstract

The Phoenix spacecraft that was launched to Mars in August 2007 landed safely on the Martian northern arctic region on May 25, 2008. It carried six experiments to study the history of water on the planet and search for organic molecules in the icy subsurface Martian soil. The spacecraft is a lander with an arm and scoop designed to dig a trench though the top soil to reach an expected ice layer near the surface. One of the instruments on board is the thermal evolved gas analyzer (TEGA), which consists of two components, a set of eight very small ovens that will heat samples of the ice soil mixtures from the trench to release imbedded gases and mineral decomposition products, and a mass spectrometer that serves as the analysis tool for the evolved gases, and also for measurements of the composition and isotopic ratios of the gases that comprise the atmosphere of Mars. The mass spectrometer is a miniature magnetic sector instrument controlled by microprocessor-driven power supplies. One feature is the gas enrichment cell that will increase the partial pressures of the noble gases in an atmosphere sample by removing all the active gases, carbon dioxide, and nitrogen, to improve the accuracy of their isotopic ratio measurements.

Citations

Sep 15, 2009·Journal of the American Society for Mass Spectrometry·Huanwen ChenRenato Zenobi
Jun 26, 2012·Analytical Chemistry·Shannon T Stroble, Samuel P Kounaves
Nov 7, 2012·The Review of Scientific Instruments·Manuel J Manard
Feb 15, 2018·Astrobiology·Peter R Gordon, Mark A Sephton
Nov 14, 2017·European Journal of Mass Spectrometry·Meiru GuoYanwu Li
Jul 4, 2009·Science·W V BoyntonR V Morris
Sep 20, 2020·Mass Spectrometry Reviews·Timothy VazquezTheresa Evans-Nguyen
Jan 1, 2018·The Review of Scientific Instruments·Gang LiMeng Dong
Dec 4, 2019·Mass Spectrometry Reviews·Przemyslaw MielczarekMarek Smoluch
Feb 8, 2020·Journal of the American Society for Mass Spectrometry·Zhengyi RenZhengxu Huang

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Analytical Chemistry
Zheng OuyangR Graham Cooks
Journal of the American Society for Mass Spectrometry
Harry F HemondMichael Hemond
Journal of the American Society for Mass Spectrometry
Daniel E AustinSamuel E Tolley
Journal of the American Society for Mass Spectrometry
J Mitchell WellsDennis J Barket
© 2022 Meta ULC. All rights reserved