1
|
Cedeño López A, Grimaudo V, Riedo A, Tulej M, Wiesendanger R, Lukmanov R, Moreno-García P, Lörtscher E, Wurz P, Broekmann P. Three-Dimensional Composition Analysis of SnAg Solder Bumps Using Ultraviolet Femtosecond Laser Ablation Ionization Mass Spectrometry. Anal Chem 2019; 92:1355-1362. [DOI: 10.1021/acs.analchem.9b04530] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- A. Cedeño López
- Department of Chemistry and Biochemistry, Interfacial Electrochemistry Group, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - V. Grimaudo
- Physics Institute, Space Research and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - A. Riedo
- Laboratory for Astrophysics, Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
| | - M. Tulej
- Physics Institute, Space Research and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - R. Wiesendanger
- Physics Institute, Space Research and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - R. Lukmanov
- Physics Institute, Space Research and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - P. Moreno-García
- Department of Chemistry and Biochemistry, Interfacial Electrochemistry Group, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - E. Lörtscher
- IBM Research Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - P. Wurz
- Physics Institute, Space Research and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - P. Broekmann
- Department of Chemistry and Biochemistry, Interfacial Electrochemistry Group, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| |
Collapse
|
2
|
Tulej M, Meyer S, Lüthi M, Lasi D, Galli A, Desorgher L, Hajdas W, Karlsson S, Kalla L, Wurz P. Detection efficiency of microchannel plates for e(-) and π(-) in the momentum range from 17.5 to 345 MeV/c. Rev Sci Instrum 2015; 86:083310. [PMID: 26329184 DOI: 10.1063/1.4928063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
High-energy e(-) and π(-) were measured by the multichannel plate (MCP) detector at the PiM1 beam line of the High Intensity Proton Accelerator Facilities located at the Paul Scherrer Institute, Villigen, Switzerland. The measurements provide the absolute detection efficiencies for these particles: 5.8% ± 0.5% for electrons in the beam momenta range 17.5-300 MeV/c and 6.0% ± 1.3% for pions in the beam momenta range 172-345 MeV/c. The pulse height distribution determined from the measurements is close to an exponential function with negative exponent, indicating that the particles penetrated the MCP material before producing the signal somewhere inside the channel. Low charge extraction and nominal gains of the MCP detector observed in this study are consistent with the proposed mechanism of the signal formation by penetrating radiation. A very similar MCP ion detector will be used in the Neutral Ion Mass (NIM) spectrometer designed for the JUICE mission of European Space Agency (ESA) to the Jupiter system, to perform measurements of the chemical composition of the Galilean moon exospheres. The detection efficiency for penetrating radiation determined in the present studies is important for the optimisation of the radiation shielding of the NIM detector against the high-rate and high-energy electrons trapped in Jupiter's magnetic field. Furthermore, the current studies indicate that MCP detectors can be useful to measure high-energy particle beams at high temporal resolution.
Collapse
Affiliation(s)
- M Tulej
- Space Research and Planetary Sciences, Physics Institute, University of Bern, CH-3012 Bern, Switzerland
| | - S Meyer
- Space Research and Planetary Sciences, Physics Institute, University of Bern, CH-3012 Bern, Switzerland
| | - M Lüthi
- Space Research and Planetary Sciences, Physics Institute, University of Bern, CH-3012 Bern, Switzerland
| | - D Lasi
- Space Research and Planetary Sciences, Physics Institute, University of Bern, CH-3012 Bern, Switzerland
| | - A Galli
- Space Research and Planetary Sciences, Physics Institute, University of Bern, CH-3012 Bern, Switzerland
| | - L Desorgher
- Laboratory of Particle Physics, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - W Hajdas
- Laboratory of Particle Physics, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - S Karlsson
- Swedish Institute of Space Physics, Space Kampus 1, Kiruna, Sweden
| | - L Kalla
- Swedish Institute of Space Physics, Space Kampus 1, Kiruna, Sweden
| | - P Wurz
- Space Research and Planetary Sciences, Physics Institute, University of Bern, CH-3012 Bern, Switzerland
| |
Collapse
|
3
|
Riedo A, Bieler A, Neuland M, Tulej M, Wurz P. Performance evaluation of a miniature laser ablation time-of-flight mass spectrometer designed for in situ investigations in planetary space research. J Mass Spectrom 2013; 48:1-15. [PMID: 23303743 DOI: 10.1002/jms.3104] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 09/02/2012] [Accepted: 09/05/2012] [Indexed: 06/01/2023]
Abstract
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.
Collapse
Affiliation(s)
- A Riedo
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland.
| | | | | | | | | |
Collapse
|
4
|
Abstract
The origin band in the electronic transition to the dipole bound excited state of C(5)H(D)(-) anions was measured using two-color photodetachment spectroscopy. The rotational analysis of the partially resolved contour is consistent with a linear structure of the anion in both the ground X(3)Σ(-) and excited A(3)Π electronic states, in contrast with an earlier interpretation. The following spectroscopic constants are inferred for C(5)H(-): T(00) = 19248.0(1), B' = 0.0835(1), B'' = 0.0826(2), A'(SO) = -11.96(1), λ(SS)' = 1.97(8) λ(SS)'' = 0.24(15). Ab initio calculations at the UHF-MP2 level support the conclusion that C(5)H(-) is linear in the ground state. The experimentally determined ground state rotational constant can be used in the search for the millimeter wave spectrum of C(5)H(-).
Collapse
Affiliation(s)
- M Tulej
- Institute of Physics, Space Science and Planetology, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
| | | | | |
Collapse
|
5
|
Tulej M, Iakovleva M, Leya I, Wurz P. A miniature mass analyser for in-situ elemental analysis of planetary material–performance studies. Anal Bioanal Chem 2010; 399:2185-200. [DOI: 10.1007/s00216-010-4411-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Revised: 11/01/2010] [Accepted: 11/02/2010] [Indexed: 10/18/2022]
|
6
|
|
7
|
Cannavò D, Knopp G, Radi P, Beaud P, Tulej M, Bodek P, Gerber T, Wokaun A. Neutral molecular ZnX (X=O, OH, N) compounds in a molecular beam. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
8
|
Knopp G, Radi P, Tulej M, Gerber T, Beaud P. Collision induced rotational energy transfer probed by time-resolved coherent anti-Stokes Raman scattering. J Chem Phys 2003. [DOI: 10.1063/1.1566437] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
|
9
|
Beaud P, Gerber T, Radi P, Tulej M, Knopp G. Rotationally inelastic collisions between N2 and rare gases: an extension of the angular momentum scaling law. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00559-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Pino T, Tulej M, Güthe F, Pachkov M, Maier JP. Photodetachment spectroscopy of the C2nH− (n=2–4) anions in the vicinity of their electron detachment threshold. J Chem Phys 2002. [DOI: 10.1063/1.1451248] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
11
|
Lakin NM, Guthe F, Tulej M, Pachkov M, Maier JP. Spectroscopy of excited states of carbon anions above the photodetachment threshold. Faraday Discuss 2000:383-93; discussion 407-29. [PMID: 11040520 DOI: 10.1039/a909545d] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electronic transitions of C3- and C5- to states lying above the electron affinity of the neutral (EA) have been recorded in the gas phase by laser photodetachment spectroscopy. The excited states are identified by comparison with absorption spectra for the mass-selected ions deposited in neon matrices and with ab initio calculations. The C 2 sigma u (+)-X 2 pi g transition and two higher energy band systems are observed for C3-, corresponding to excitation energies more than 1.5 eV above the EA. In the case of C5- the strongest features, at about 0.6 eV above the EA, are attributed to close lying 2 delta g-X 2 pi u and 2 sigma g(-)-X 2 pi u transitions. The dominant configurations in these states identify them as long-lived Feshbach resonances. Lifetimes for these resonances in C3- are estimated to be between 200 fs and 3 ps from the band widths.
Collapse
Affiliation(s)
- NM Lakin
- Institut fur Physikalische Chemie, Universitat Basel, Switzerland
| | | | | | | | | |
Collapse
|
12
|
Tulej M, Fulara J, Sobolewski A, Jungen M, Maier JP. Electronic transitions of C3− above the photodetachment threshold. J Chem Phys 2000. [DOI: 10.1063/1.480992] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
13
|
Kirkwood DA, Tulej M, Pachkov MV, Schnaiter M, Güthe F, Grutter M, Wyss M, Maier JP, Fischer G. Electronic spectra of carbon chain anions: C2nH− (n=5–12). J Chem Phys 1999. [DOI: 10.1063/1.479842] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
14
|
Tulej M, Güthe, Schnaiter M, Pachkov MV, Kirkwood DA, Maier JP, Fischer G. Electronic Spectra of the Carbon Chain Anions C2n-1H- (n = 5−8) in the Gas Phase. J Phys Chem A 1999. [DOI: 10.1021/jp992927v] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Tulej
- Institut für Physikalische Chemie, Universität Basel, Basel, Switzerland
| | - Güthe
- Institut für Physikalische Chemie, Universität Basel, Basel, Switzerland
| | - M. Schnaiter
- Institut für Physikalische Chemie, Universität Basel, Basel, Switzerland
| | - M. V. Pachkov
- Institut für Physikalische Chemie, Universität Basel, Basel, Switzerland
| | - D. A. Kirkwood
- Institut für Physikalische Chemie, Universität Basel, Basel, Switzerland
| | - J. P. Maier
- Institut für Physikalische Chemie, Universität Basel, Basel, Switzerland
| | - G. Fischer
- Department of Chemistry, Australian National University, Canberra ACT 0200, Australia
| |
Collapse
|
15
|
|