Bonn-type field ion source for a compact magnetic mass analyzer

1980 ◽  
Vol 52 (12) ◽  
pp. 1987-1990 ◽  
Author(s):  
Fumio. Okuyama ◽  
Kazuo. Ishikawa ◽  
Minoru. Chida ◽  
Yoshio. Yamato
Keyword(s):  
Ion Source ◽  
Mass Analyzer ◽  
Magnetic Mass

Mass analyzer using electron‐beam‐guiding type ion source

1979 ◽  
Vol 50 (12) ◽  
pp. 1517-1520 ◽  
Author(s):  
Tohru Kishi ◽  
Isao Yamada ◽  
Toshinori Takagi
Keyword(s):  
Electron Beam ◽  
Ion Source ◽  
Mass Analyzer

The Orbitrap mass analyzer with direct ion injection interfaced to a laser desorption/ionization ion source

2013 ◽  
Vol 68 (14) ◽  
pp. 1165-1169 ◽  
Author(s):  
A. A. Makarov ◽  
A. A. Grechnikov ◽  
S. M. Nikiforov ◽  
O. A. Tyutyunnik ◽  
E. V. Denisov
Keyword(s):  
Laser Desorption ◽  
Ion Source ◽  
Mass Analyzer ◽  
Laser Desorption Ionization ◽  
Ion Injection ◽  
Desorption Ionization ◽  
Orbitrap Mass Analyzer

In-situ analysis of 1.9 Ga chert with a miniature mass spectrometer for space

2020 ◽  
Author(s):  
Rustam Lukmanov ◽  
Marek Tulej ◽  
Valentine Riedo ◽  
Niels Ligterink ◽  
Coenraad De Koning ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Chemical Composition ◽  
Mass Spectrometer ◽  
Depth Profiling ◽  
Ion Source ◽  
Mass Analyzer ◽  
Ionization Mass ◽  
Martian Surface ◽  
Mass Unit

<p>In-situ Mars exploration requires new promising instrumentation that will be capable of delivering highly accurate chemical information about soils and rocks present at the Martian surface. Specific attention is drawn to the instruments that are capable of identifying extinct or extant microbes within the bulk of various solid samples (Tulej et al., 2015; Westall et al., 2015; Wiesendanger et al., 2018). A miniature Laser Ablation/Ionization Mass Spectrometer (LIMS) developed at the University of Bern is among the valid candidates (Wurz et al., 2012). The size of the mass analyzer is only Ø 60 mm × 160 mm and thus capable of being deployed on a rover or lander platform. In this contribution, we will present data collected from a 1.88 Ga Gunflint sample using a deep UV fs laser system as ablation ion source. The gunflint chert sample contains a population of microfossils entombed in the silica matrix and was chosen as a Martian analogue. Using the high stability of the UV laser and consequent uniform ablation, we performed large-scale spectra collection (90’000) in two modes - chemical imaging and depth profiling. With the current setup, we achieved a diameter of the analytical spot of ~10 µm for the depth profiling and ~5 µm for the imaging. Our results reveal that our LIMS instrument can identify the location of the microfossil lamination area as well as single microfossils by chemical means. We show how single mass unit spectral decomposition and subsequent kernel clustering reveal masses and intensity regions unique to the microfossils and inorganic host, thus providing the opportunity for automated identification of the spectra that are collected from the microfossils. We also show how transforming spectral intensities into spectral proximities can help to navigate the rich multidimensional datasets. We also address common interpretation problems in LIMS, when multiple mineralogical inclusions contribute to the output spectra acquired within the single analytical spot using ρ-networks and Principal Component Analysis (PCA). In combination with analysis of spectral proximities, this approach is particularly useful in attempts to assess the biogenicity of the putative terrestrial microfossils as well as potential Martian microfossils. Additionally, we discuss the data analysis pipeline and chemical composition of the microfossils and surrounding inorganic host in detail. </p> <p>Tulej M., Neubeck A., Ivarsson M., Riedo A., Neuland M. B., Meyer S., and Wurz P. (2015) Chemical Composition of Micrometer-Sized Filaments in an Aragonite Host by a Miniature Laser Ablation/Ionization Mass Spectrometer. Astrobiology, 15: 669-682.</p> <p>Westall F., Foucher F., Bost N., Bertrand M., Loizeau D., Vago J. L., Kminek G., Gaboyer F., Campbell K. A., Bréhéret J.-G. and others. (2015) Biosignatures on Mars: What, Where, and How? Implications for the Search for Martian Life. Astrobiology, 15: 998-1029.</p> <p>Wiesendanger R., Wacey D., Tulej M., Neubeck A., Ivarsson M., Grimaudo V., Moreno-García P., Cedeño-López A., Riedo A., Wurz P. and others. (2018) Chemical and Optical Identification of Micrometer-Sized 1.9 Billion-Year-Old Fossils by Combining a Miniature Laser Ablation Ionization Mass Spectrometry System with an Optical Microscope. Astrobiology, 18: 1071-1080.</p> <p>Wurz P., Abplanalp D., Tulej M., Iakovleva M., Fernandes V. A., Chumikov A., and Managadze G. G. (2012) Mass spectrometric analysis in planetary science: Investigation of the surface and the atmosphere. Solar System Research, 46: 408-422.</p> <p> </p>

Mass analyzer “MASHA” high temperature target and plasma ion source

2004 ◽  
Vol 75 (5) ◽  
pp. 1598-1600
Author(s):  
A. G. Semchenkov ◽  
D. N. Rassadov ◽  
V. V. Bekhterev ◽  
V. A. Bystrov ◽  
A. Yu. Chizov ◽  
...  
Keyword(s):  
High Temperature ◽  
Ion Source ◽  
Mass Analyzer ◽  
Plasma Ion Source

scholarly journals Изменение состава ионного тока в процессе полевого испарения вольфрама при высоких температурах

2019 ◽  
Vol 89 (7) ◽  
pp. 1105
Author(s):  
О.Л. Голубев ◽  
Н.М. Блашенков
Keyword(s):  
Steady State ◽  
High Temperatures ◽  
Mass Spectrometer ◽  
Isotopic Ratio ◽  
Ion Source ◽  
Ion Currents ◽  
Evaporation Process ◽  
Field Evaporation ◽  
Magnetic Mass ◽  
Charged Ions

Steady-state field evaporation of tungsten at high temperatures (T ~ 2000 K) has been studied using a magnetic mass spectrometer equipped with the field ion source. Only low-charged ions (W+2 and W+) have been observed in the course of evaporation. The distribution of the ion currents by tungsten isotopes correspondents to standart isotopic ratio for natural tungsten. Some deviations from standart isotopic ratio were observed owing to fluctuations and unstable nature of evaporation process. O.L. Golubev, N.M. Blashenkov

scholarly journals Observation of charged droplets from electrospray ionization (ESI) plumes in API mass spectrometers

2021 ◽  
Author(s):  
Clara Markert ◽  
Marco Thinius ◽  
Laura Lehmann ◽  
Chris Heintz ◽  
Florian Stappert ◽  
...  
Keyword(s):  
Electrospray Ionization ◽  
Mass Spectrometer ◽  
Strong Electric Field ◽  
Ion Source ◽  
Mass Analyzer ◽  
Ionization Mass ◽  
Inlet System ◽  
Mass Spectrometers ◽  
Charged Droplets ◽  
Pass Through

AbstractElectrospray ionization (ESI) generates bare analyte ions from charged droplets, which result from spraying a liquid in a strong electric field. Experimental observations available in the literature suggest that at least a significant fraction of the initially generated droplets remain large, have long lifetimes, and can thus aspirate into the inlet system of an atmospheric pressure ionization mass spectrometer (API-MS). We report on the observation of fragment signatures from charged droplets penetrating deeply the vacuum stages of three commercial mass spectrometer systems with largely different ion source and spray configurations. Charged droplets can pass through the ion source and pressure reduction stages and even into the mass analyzer region. Since droplet signatures were found in all investigated instruments, the incorporation of charged droplets is considered a general phenomenon occurring with common spray conditions in ESI sources.

Analysis and Speciation of Lanthanoides by ICP-MS

2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Lena Telgmann ◽  
Uwe Lindner ◽  
Jana Lingott ◽  
Norbert Jakubowski
Keyword(s):  
Inductively Coupled Plasma ◽  
Dynamic Range ◽  
Matrix Effects ◽  
High Vacuum ◽  
Argon Plasma ◽  
Ion Source ◽  
Mass Analyzer ◽  
Electron Multiplier ◽  
Inductively Coupled ◽  
Icp Ms

Abstract Inductively coupled plasma mass spectrometry (ICP-MS) is based on formation of positively charged atomic ions in a high-frequency inductively coupled Argon plasma at atmospheric pressure. The ions are extracted and transferred from the plasma source into a mass analyzer operated at high vacuum via an interface equipped with a sampling and a skimmer cone. The ions are separated in the mass analyzer according to their charge to mass ratio. The ions are converted at a conversion dynode and are detected by use of a secondary electron multiplier or a Faraday cup. From an analytical point of view, ICP-MS is a well-established method for multi-elemental analysis in particular for elements at trace- and ultra-trace levels. Furthermore, methods based on ICP-MS offer simple quantification concepts, for which usually (liquid) standards are applied, low matrix effects compared to other conventional analytical techniques, and relative limits of detection (LODs) in the low pg g−1 range and absolute LODs down to the attomol range. For these applications, ICP-MS excels by a high sensitivity which is independent of the molecular structure and a wide linear dynamic range. It has found acceptance in various application areas and during the last decade ICP-MS is also more and more applied for detection of rare earth elements particularly in the life sciences. Due to the fact that all molecules introduced into the high temperature of the plasma in the ion source were completely dissociated and broken down into atoms, which are subsequently ionized, all elemental species information is completely lost. However, if the different species are separated before they enter the plasma by using adequate fractionation or separation techniques, then ICP-MS can be used as a very sensitive element-specific detector. We will discuss this feature of ICP-MS in this chapter in more detail at hand of the speciation of gadolinium-containing contrast agents.

Interfacing the Orbitrap Mass Analyzer to an Electrospray Ion Source

2003 ◽  
Vol 75 (7) ◽  
pp. 1699-1705 ◽  
Author(s):  
Mark Hardman ◽  
Alexander A. Makarov
Keyword(s):  
Ion Source ◽  
Mass Analyzer ◽  
Orbitrap Mass Analyzer
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