Project of the mission to Phobos

Zelenyǐ, L. M.; Захаров, А. В.; Polischuk, G.M.; Martynov, M. B.

doi:10.1134/s003809461001003x

Cited by 17 publications

(13 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So far, highly accurate and sensitive measurements for cosmochemistry could be only conducted by laboratory systems, using laser ablation inductively coupled mass spectrometry (LA ICP MS), thermal ionisation mass spectrometry (TIMS), glow discharge mass spectrometry (GDMS) and others. However, during the last decade, considerable progress in developments of miniature mass analysers for space research was made . At present, only a few well‐established spectroscopic instruments are employed for chemical analysis of planetary surfaces from orbiting spacecraft, landers or rovers, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…However, during the last decade, considerable progress in developments of miniature mass analysers for space research was made. [4][5][6][7][8][9][10][11] At present, only a few well-established spectroscopic instruments are employed for chemical analysis of planetary surfaces from orbiting spacecraft, landers or rovers, [12] e.g. X-ray (XRS), Gamma-ray (GRS), neutron and alpha particle X-ray (APXS) techniques.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance evaluation of a miniature laser ablation time‐of‐flight mass spectrometer designed for in situ investigations in planetary space research

Riedo,

Bieler,

Neuland

et al. 2012

J. Mass. Spectrom.

121

View full text Add to dashboard Cite

Key performance features of a miniature laser ablation time-of-flight mass spectrometer designed for in situ investigations of the chemical composition of planetary surfaces are presented. This mass spectrometer is well suited for elemental and isotopic analysis of raw solid materials with high sensitivity and high spatial resolution. In this study, ultraviolet laser radiation with irradiances suitable for ablation (< 1 GW/cm(2)) is used to achieve stable ion formation and low sample consumption. In comparison to our previous laser ablation studies at infrared wavelengths, several improvements to the experimental setup have been made, which allow accurate control over the experimental conditions and good reproducibility of measurements. Current performance evaluations indicate significant improvements to several instrumental figures of merit. Calibration of the mass scale is performed within a mass accuracy (Δm/m) in the range of 100 ppm, and a typical mass resolution (m/Δm) ~600 is achieved at the lead mass peaks. At lower laser irradiances, the mass resolution is better, about (m/Δm) ~900 for lead, and limited by the laser pulse duration of 3 ns. The effective dynamic range of the instrument was enhanced from about 6 decades determined in previous study up to more than 8 decades at present. Current studies show high sensitivity in detection of both metallic and non-metallic elements. Their abundance down to tens of ppb can be measured together with their isotopic patterns. Due to strict control of the experimental parameters, e.g. laser characteristics, ion-optical parameters and sample position, by computer control, measurements can be performed with high reproducibility.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a miniature laser ablation time‐of‐flight mass spectrometer designed for in situ investigations in planetary space research

Riedo,

Bieler,

Neuland

et al. 2012

J. Mass. Spectrom.

121

View full text Add to dashboard Cite

show abstract

“…The Martian atmosphere and surface and Phobos surface are objects of study in the AOST experiment (Grigor'ev et al, 2009) within the Phobos Soil project (Zelenyi et al, 2010). The AOST abbreviation is con ventional and was inherited from an "optical" spec trometer planned at the early stage of the project.…”

Section: Introductionmentioning

confidence: 99%

AOST: Fourier spectrometer for studying mars and phobos

Korablev

Grigor’ev²,

Moshkin³

et al. 2012

Sol Syst Res

View full text Add to dashboard Cite

International audienceAn AOST Fourier spectrometer of the Phobos-Soil project is intended for studying Mars and Phobos by means of measurements of IR radiation spectra of the Martian surface and atmosphere, the Phobos surface, and the spectrum of solar radiation passing through the Martian atmosphere on its limb. The main scientific problems to be solved with the spectrometer on Mars are measurements of methane content, search for minor constituents, and study of diurnal variations in the temperature and atmospheric aerosol. The spectrometer will also study the Martian and Phobos surface both remotely and after landing. The spectral range of the instrument is 2.5-25 μm, the best spectral resolution (without apodization) is 0.6 cm⁻¹, and the instantaneous field of view is 2.5°. The recording time of one spectrum is equal to 5 s in solar observations and 50 s in observations of Mars and Phobos. The instrument has self-thermal stabilization and two-axis pointing systems, as well as a built-in radiation source for flight calibration. The spectrometer mass is 4 kg, and power consumption is up to 13 W. Scientific problems, measurement modes, and, briefly, engineering implementation of the experiment are discussed in this work

show abstract

“…TIMM-2, the instrument built for the Phobos-Grunt Russian project [18,19], is a combination of the highly dispersive echelle spectrometer operating in the high-diffraction orders and the acousto-optic tunable filter (AOTF) used for isolating one order at a time. During one exposure, only a small portion of the spectrum is measured, but the AOTF allows fast and random access to any other diffraction order.…”

Section: Introductionmentioning

confidence: 99%

Compact echelle spectrometer for occultation sounding of the Martian atmosphere: design and performance

Korablev¹,

Montmessin²,

Trokhimovsky³

et al. 2013

Appl. Opt.

View full text Add to dashboard Cite

The echelle spectrometer TIMM-2 is the instrument developed for the unsuccessful Russian mission Phobos-Grunt. The instrument was dedicated to solar occultation studies of the Martian atmosphere by measuring the amount of methane, by sensitive measuring of other minor constituents, and by profiling the D/H ratio and the aerosol structure. The spectral range of the instrument is 2300-4100 nm, the spectral resolving power λ/Δλ exceeds 25,000, and the field of view is 1.5×21 arc min. The spectra are measured in narrow spectral intervals, corresponding to discreet diffraction orders. One measurement cycle includes several spectral intervals. To study the vertical profiles of aerosol, the instrument incorporates four photometers in the UV to near-IR spectral range. The mass of the instrument is 2800 g, and its power consumption is 12 W. One complete flight model remains available after the Phobos-Grunt launch. We discuss the science objectives of the occultation experiment for the case of Mars, the implementation of the instrument, and the results of ground calibrations.

show abstract

Project of the mission to Phobos

Cited by 17 publications

References 17 publications

Performance evaluation of a miniature laser ablation time‐of‐flight mass spectrometer designed for in situ investigations in planetary space research

Performance evaluation of a miniature laser ablation time‐of‐flight mass spectrometer designed for in situ investigations in planetary space research

AOST: Fourier spectrometer for studying mars and phobos

Compact echelle spectrometer for occultation sounding of the Martian atmosphere: design and performance

Contact Info

Product

Resources

About