Resonant desorption of ice with a tunable LiNbO3 optical parametric oscillator

Focşa, Cristian; Chazallon, Bertrand; Destombes, J. L.

doi:10.1016/s0039-6028(02)02631-6

Cited by 32 publications

(64 citation statements)

References 28 publications

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“…Using this set-up we have demonstrated in a recent study on pure ice samples the exact resonant character of the desorption process (i.e. the perfect match between the desorption yield and the optical absorption coefficient of ice) in the O-H stretching spectral range (2.8-3.4 lm) [9]. We are now extending this study to doped ice samples.…”

Section: Introductionmentioning

confidence: 73%

“…The experimental set-up we have developed in Lille has been presented in detail elsewhere [9][10][11][12] and only brief details specific to the present work will be given below. Cryogenic sample probing is performed by laser desorption, followed by multi-photon ionization of the ejected particles and time-of-flight mass separation of the formed ions.…”

Section: Methodsmentioning

confidence: 99%

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Wavelength-selective laser desorption of doped ice surfaces

Mihesan¹,

Ziskind²,

Chazallon³

et al. 2005

Surface Science

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Section: Introductionmentioning

confidence: 73%

Section: Methodsmentioning

confidence: 99%

Wavelength-selective laser desorption of doped ice surfaces

Mihesan¹,

Ziskind²,

Chazallon³

et al. 2005

Surface Science

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“…The home-made L2MS apparatus has been described in detail elsewhere (Focsa and Destombes, 2001;Focsa et al, 2003;Mihesan et al, 2004Mihesan et al, , 2006. Briefly, the collimated (2-mm diameter) beam of a Nd:YAG laser (Continuum Minilite II, 5 ns, 532 nm, 10 Hz) irradiates the surface of the sample, placed in vacuum (about 10 -8 mbar residual pressure) on a cryogenic stage.…”

Section: Methodsmentioning

confidence: 99%

Chemical Composition of Diesel/Biodiesel Particulate Exhaust by FTIR Spectroscopy and Mass Spectrometry: Impact of Fuel and Driving Cycle

Popovicheva

Irimiea

Carpentier

et al. 2017

Aerosol Air Qual. Res.

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The growing concern about air quality and the impact exhaust particles can have on the environment has resulted in the increased use of alternative fuels. A sampling campaign from a conventional heavy diesel engine operated in typical transient cycle or steady-state condition, and running on diesel, 30% biodiesel in diesel, and 100% biodiesel was carried out. The particulate composition was characterized using Fourier Transform Infrared (FTIR) spectroscopy, Two-step Laser Mass Spectrometry (L2MS), Secondary Ion Mass Spectrometry (SIMS), thermo-optical analysis, and capillary electrophoresis. Elemental carbon is demonstrated to decrease from diesel to 100% biodiesel, in agreement with the evolution of aromatic bands and the MS abundance of C n -fragments, while organic carbon exhibits a constant level irrespective of the working regime. Aliphatic, aromatic, carboxyl, carbonyl, hydroxyl functionalities, and nitro compounds are found to depend on the engine-working regime. Mass spectra are mainly characterized by alkyl fragments (C n H 2n+1 + ), associated to normal and branched alkanes, PAHs and their alkylated derivatives. The addition of biodiesel to diesel changes the particulate composition towards more oxygenated constituents, such as carbonyl groups attributed to methyl ester CH 3 O + fragments of unburned biodiesel. Fuel-specific fragments have been identified, such as C 3 H 7 O + for diesel, and C 2 H 3 O 2 + and CH 3 O -for biodiesel. Nitrogenized compounds are revealed by -NO 2 functionalities and N-containing fragments. Principal Component Analysis (PCA) was successfully applied to discriminate the engine operating conditions, with a higher variance given by the fuel, thus allowing to better evaluate the environmental impacts of alternative energy source emissions.

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“…Krasnopoler et al 1 have reported a threshold of ~120 mJ/cm 2 , while higher values of ~520 and 700 mJ/cm 2 were reported by Livingston et al 2 and Ficsa et al 3 , respectively. Also shown in Table 1 are the threshold fluences, in the range of 450 to 550 mJ/cm 2 , for desorption of ions of biological materials in an ice matrix.…”

Section: Introductionmentioning

confidence: 89%

Feasibility studies of laser desorption to study surfaces of Jupiter's icy moons

Chou

Arenberg

Sollitt

2005

Astrobiology and Planetary Missions

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We report the first efforts to characterize a laser desorption and thermal emission spectroscopic technique that could be used to detect and analyze the abundances of organic and inorganic compounds in the surfaces of Jupiter's icy moons. Based on the literature, an infrared laser near 3.1 µm at a moderate fluence 120 mJ/cm 2 may desorb the compounds in the ice surface into the gas phase through an efficient explosive phase-transition process. The desorbed compounds, which are much warmer than the ice, can be analyzed by monitoring their IR thermal emission spectra against the colder icy surface by use of an IR spectrometer. However, there appears to have some discrepancies in the literature on the exact threshold fluence for desorption. We have conducted experiments to determine the threshold fluence for the laser desorption of ice by use of a sensitive photoacoustic spectroscopy technique. Our results suggest that the threshold fluence near 3.1 µm, at the peak of optical absorption of ice, is close to 120 mJ/cm 2 , as compared to some other higher values being reported. In addition, our data shows a delay time of about 24 µs or longer for an explosive removal of a layer of the ice surface after the irradiation of a laser pulse. Implications for mission and instrument design are discussed.

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Resonant desorption of ice with a tunable LiNbO3 optical parametric oscillator

Cited by 32 publications

References 28 publications

Wavelength-selective laser desorption of doped ice surfaces

Wavelength-selective laser desorption of doped ice surfaces

Chemical Composition of Diesel/Biodiesel Particulate Exhaust by FTIR Spectroscopy and Mass Spectrometry: Impact of Fuel and Driving Cycle

Feasibility studies of laser desorption to study surfaces of Jupiter's icy moons

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