ToF-SIMS and Laser-SNMS Imaging of Heterogeneous Topographically Complex Polymer Systems

Pelster, Andreas; Körsgen, Martin; Kurosawa, Takako; Morita, Hiromi; Arlinghaus, Heinrich F.

doi:10.1021/acs.analchem.6b02415

Cited by 19 publications

(12 citation statements)

References 15 publications

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“…There are other laboratory analytical techniques, which offer high spatial resolution depth profiling capabilities such as Glow Discharge Mass Spectrometry (GD-MS), Laser Ablation Inductively Coupled Mass Spectrometry (LA-ICP-MS) and Secondary Ion Mass Spectrometry (SIMS) [35][36][37][38][39][40] . These instruments in current state of development are less suitable for application to space research but can be useful in applications in terrestrial environments.…”

Section: Introductionmentioning

confidence: 99%

Determination of the microscopic mineralogy of inclusion in an amygdaloidal pillow basalt by fs-LIMS

Tulej

Lukmanov

Grimaudo

et al. 2021

J. Anal. At. Spectrom.

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Section: Introductionmentioning

confidence: 99%

Determination of the microscopic mineralogy of inclusion in an amygdaloidal pillow basalt by fs-LIMS

Tulej

Lukmanov

Grimaudo

et al. 2021

J. Anal. At. Spectrom.

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“…Resonant photoionization suffers from a loss in analytical flexibility since it is element and even isotope specific, but due to higher cross sections it results in even higher useful yields compared to the non-resonant process [15]. Resonant Laser-SNMS has already been successfully applied to various sample types such as crystalline materials, doped semi-conductors, ocean sediments, and organic polymers [20][21][22][23][24][25], and has proven to be adequate for the analysis of radioactive samples [26][27][28][29][30] using fully custom-built TOF-MS as well as adapted commercially available TOF-SIMS instruments in combination with a wide range of laser systems.…”

Section: Introductionmentioning

confidence: 99%

Development, characterization, and first application of a resonant laser secondary neutral mass spectrometry setup for the research of plutonium in the context of long-term nuclear waste storage

et al. 2021

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Plutonium is a major contributor to the radiotoxicity in a long-term nuclear waste repository; therefore, many studies have focused on interactions of plutonium with the technical, geotechnical, and geological barriers of a possible nuclear waste storage site. In order to gain new insights into the sorption on surfaces and diffusion of actinides through these complex heterogeneous materials, a highly sensitive method with spatial resolution is required. Resonant laser secondary neutral mass spectrometry (Laser-SNMS) uses the spatial resolution available in time-of-flight secondary ion mass spectrometry (TOF-SIMS) in combination with the high selectivity, sensitivity, and low background noise of resonance ionization mass spectrometry (RIMS) and is, therefore, a promising method for the study and analysis of the geochemical behavior of plutonium in long-term nuclear waste storage. The authors present an approach with a combined setup consisting of a commercial TOF-SIMS instrument and a Ti:sapphire (Ti:Sa) laser system, as well as its optimization, characterization, and improvements compared to the original proof of concept by Erdmann et al. (2009). As a first application, the spatial distributions of plutonium and other elements on the surface of a pyrite particle and a cement thin section were measured by Laser-SNMS and TOF-SIMS, respectively. These results exemplify the potential of these techniques for the surface analysis of heterogeneous materials in the context of nuclear safety research.

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“…by implanting ions for doping or defect engineering) [1][2][3][4], cleaning, etching or patterning the surface by sputtering (i.e. the removal of surface material) [5][6][7][8], fabrication of thin films (by collecting the sputtered material on a substrate) [9,10], imaging [11], or chemical surface analysis via mass spectrometry of the sputtered material [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A concept to generate ultrashort ion pulses for pump-probe experiments in the keV energy range

et al. 2019

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The impact of an energetic particle onto a solid surface generates a strongly perturbed and extremely localized non-equilibrium state, which relaxes on extremely fast time scales. In order to facilitate a time-resolved observation of the relaxation dynamics using established ultrafast pump-probe techniques, it is necessary to pinpoint the projectile impact in time with sufficient accuracy. In this paper, we propose a concept to generate ultrashort ion pulses via femtosecond photoionization of rare gas atoms entrained in a supersonic jet, combined with ion optical bunching of the resulting ion package. We calculate the photoion cloud generated by an intense focused laser pulse and show that Ar q+ ions with q=1-5 can be generated with a standard table-top laser system, which are then accelerated to energies in the keV range over a very short distance and bunched to impinge onto the target surface in a time-focused manner. Detailed ion trajectory simulations show that single ion pulses of sub-picosecond duration can be generated this way. The influence of space charge broadening is included in the simulations, which reveal that flight time broadening is insignificant for pulses containing up to 10-20 ions and starts to increase the pulse width above ∼50 ions/pulse. an ultrashort laser pulse for the excitation (pump), which is then combined with a time-delayed laser-based analysis (probe). In order to transfer this methodology to the ion-surface interaction problem, it is necessary to pinpoint the impact of the projectile ion(s) in time with sufficient accuracy, i.e. with a time resolution of a picosecond or below. The generation of such ultrashort ion pulses, however, poses a significant problem. While electron pulses with sub-ps duration can fairly easily be produced via photoemission from a suitable photocathode using a femtosecond laser pulse, the same technique generally fails for low-energy heavy ions due to their larger mass. In order to achieve good time resolution, the generated charged particles must be quickly accelerated to rather high kinetic energy, leading to short flight times towards the investigated sample with small temporal dispersion accompanied by weak space charge broadening. One possibility to generate a sufficiently short ion pulse is via sheath acceleration in a laser-induced plasma, which is generated by an ultrashort highintensity laser pulse and may accelerate ions to MeV/u energies with a rather broad energy distribution [17,18]. In combination with time resolved x-ray diffraction using an ultrashort x-ray source driven by the same laser pulse, this technique has, for instance, been applied to investigate the ultrafast melting of graphite induced by proton irradiation [19]. The inherently broad energy spectrum of the generated ion bunches can be narrowed by letting the ions pass through thin foils of different thickness [20]. Ion bunches generated this way have been analyzed by an optical streaking scheme that utilizes the ultrafast excitation and relaxation of a high-energy irradiated...

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ToF-SIMS and Laser-SNMS Imaging of Heterogeneous Topographically Complex Polymer Systems

Cited by 19 publications

References 15 publications

Determination of the microscopic mineralogy of inclusion in an amygdaloidal pillow basalt by fs-LIMS

Determination of the microscopic mineralogy of inclusion in an amygdaloidal pillow basalt by fs-LIMS

Development, characterization, and first application of a resonant laser secondary neutral mass spectrometry setup for the research of plutonium in the context of long-term nuclear waste storage

A concept to generate ultrashort ion pulses for pump-probe experiments in the keV energy range

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