The Experts below are selected from a list of 165 Experts worldwide ranked by ideXlab platform
Sami Rinta-antila - One of the best experts on this subject based on the ideXlab platform.
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Conversion Electron Spectroscopy at IGISOL
Hyperfine Interactions, 2012Co-Authors: Sami Rinta-antila, Wladyslaw Henryk Trzaska, Juho RissanenAbstract:Conversion elecron Spectroscopy has been an important part of the nuclear spectrocopy research at the Department of Physics of the University of Jyvaskyla since the commissioning of the first cyclotron in the mid 1970s. At the IGISOL facility a specialiced conversion Electron spectrometer ELLI was developed in the late 1980s. The first results with ELLI were obtained using the beams from the old MC-20 cyclotron to study newly discovered isotopes of refractory fission products. In the present K130 cyclotron laboratory ELLI has been utilized in many decay-Spectroscopy experiments both neutron-deficient and neutron-rich side of the valley of stability. In the early 2000s the new JYFLTRAP ion trap system overthrew ELLI from its permanent place in the IGISOL beamline. Conversion Electron Spectroscopy has continued with the new Penning trap that has been used in in-trap Electron Spectroscopy tests and post-trap Electron Spectroscopy is foreseen.
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In-trap conversion Electron Spectroscopy
Nuclear Instruments and Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment, 2002Co-Authors: L. Weissman, F. Ames, Juha Äystö, O. Forstner, K. Reisinger, Sami Rinta-antilaAbstract:The Penning trap REXTRAP at ISOLDE was used to test the feasibility of in-trap conversion Electron Spectroscopy. The results of simulations, experiments with solid conversion Electron sources as well as first on-line tests with trapped radioactive ions are presented. In addition to obtaining high-resolution spectroscopic data, the detection of conversion Electrons was found to be a useful tool for the diagnostics of the trap operation. The tests proved the feasibility of in-trap Spectroscopy but also revealed some potential problems to be addressed in the future.
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Feasibility of In-Trap Conversion Electron Spectroscopy
Atomic Physics at Accelerators: Mass Spectrometry, 2001Co-Authors: L. Weissman, Sami Rinta-antila, F. Ames, Juha Äystö, O. Forstner, R. SchmidtAbstract:We have used REXTRAP at ISOLDE to test the feasibility of in-trap Electron Spectroscopy. The results of calculations, experiments with various Electron sources as well as a first test with trapped radioactive ions are presented.
M Kast - One of the best experts on this subject based on the ideXlab platform.
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Hot Electron Spectroscopy and microscopy
Reports on Progress in Physics, 2004Co-Authors: Jürgen Smoliner, D Rakoczy, M KastAbstract:Semiconductor heterostructures, such as double-barrier resonant tunnelling diodes and superlattices, are nowadays used for many applications. One very versatile and powerful method to study Electronic transport in heterostructures is hot Electron Spectroscopy. Hot Electron Spectroscopy can be carried out in two complementary versions: device-based techniques usually employ so-called hot Electron transistors (HETs), while ballistic Electron emission microscopy (BEEM) uses a scanning tunnelling microscope (STM) as the source of ballistic Electrons.In this review, spectroscopic results obtained by these two methods are compared and discussed. It is shown that BEEM results are strongly influenced by Electron refraction effects, while the behaviour of HET devices is dominated by inelastic scattering effects in the base and drift region of the device. Thus, STM-based BEEM/S and HET-based Spectroscopy are genuinely complementary methods, which yield supplementary results.
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Hot-Electron Spectroscopy in parallel magnetic fields
Applied Physics Letters, 2003Co-Authors: M Kast, W. Boxleitner, Christoph Pacher, Gottfried Strasser, Erich GornikAbstract:Hot-Electron Spectroscopy in the presence of magnetic fields applied parallel to the current direction is studied. Inter-Landau-level transitions are observed due to scattering processes in the drift region of the hot-Electron transistor. In high magnetic fields, the reduced phase space of elastic/inelastic scattering is directly observed as a decrease of the energetic widths of ballistic/phonon-replica peaks. This results in an increased resolution of the hot-Electron Spectroscopy to be well below ΔE=10 meV.
Juho Rissanen - One of the best experts on this subject based on the ideXlab platform.
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Conversion Electron Spectroscopy at IGISOL
Hyperfine Interactions, 2012Co-Authors: Sami Rinta-antila, Wladyslaw Henryk Trzaska, Juho RissanenAbstract:Conversion elecron Spectroscopy has been an important part of the nuclear spectrocopy research at the Department of Physics of the University of Jyvaskyla since the commissioning of the first cyclotron in the mid 1970s. At the IGISOL facility a specialiced conversion Electron spectrometer ELLI was developed in the late 1980s. The first results with ELLI were obtained using the beams from the old MC-20 cyclotron to study newly discovered isotopes of refractory fission products. In the present K130 cyclotron laboratory ELLI has been utilized in many decay-Spectroscopy experiments both neutron-deficient and neutron-rich side of the valley of stability. In the early 2000s the new JYFLTRAP ion trap system overthrew ELLI from its permanent place in the IGISOL beamline. Conversion Electron Spectroscopy has continued with the new Penning trap that has been used in in-trap Electron Spectroscopy tests and post-trap Electron Spectroscopy is foreseen.
Erich Gornik - One of the best experts on this subject based on the ideXlab platform.
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High‐resolution ballistic Electron Spectroscopy in parallel magnetic fields
AIP Conference Proceedings, 2005Co-Authors: Michael Kast, W. Boxleitner, Gottfried Strasser, Erich GornikAbstract:Hot‐Electron Spectroscopy in the presence of magnetic fields applied parallel to the current direction is studied. Inter‐Landau‐level transitions are observed due to scattering processes in the drift region of the hot‐Electron transistor. In high magnetic fields, the reduced phase space of elastic/inelastic scattering is directly observed as a decrease of the energetic widths of ballistic/phonon‐replica peaks. This results in an increased resolution of the hot‐Electron Spectroscopy to be well below ΔE=10 meV.
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Hot-Electron Spectroscopy in parallel magnetic fields
Applied Physics Letters, 2003Co-Authors: M Kast, W. Boxleitner, Christoph Pacher, Gottfried Strasser, Erich GornikAbstract:Hot-Electron Spectroscopy in the presence of magnetic fields applied parallel to the current direction is studied. Inter-Landau-level transitions are observed due to scattering processes in the drift region of the hot-Electron transistor. In high magnetic fields, the reduced phase space of elastic/inelastic scattering is directly observed as a decrease of the energetic widths of ballistic/phonon-replica peaks. This results in an increased resolution of the hot-Electron Spectroscopy to be well below ΔE=10 meV.
O. Dorvaux - One of the best experts on this subject based on the ideXlab platform.
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Gamma and conversion Electron Spectroscopy using GABRIELA
The European Physical Journal A, 2020Co-Authors: R. Chakma, K. Hauschild, A. Lopez-martens, A. V. Yeremin, O. N. Malyshev, A. G. Popeko, Yu. A. Popov, A. I. Svirikhin, V. I Chepigin, O. DorvauxAbstract:GABRIELA (Gamma Alpha Beta Recoil Investigations with the Electromagnetic Analyzer) is a detection system installed at the focal plane of the SHELS (Separator for Heavy Elements Spectroscopy) recoil separator for gamma and internal conversion Electron Spectroscopy of heavy and superheavy nuclei. GABRIELA has recently been upgraded. The characteristics of the new setup are presented using the Geant4 Monte Carlo simulation toolkit and validated against experimental results. The impact of summing on the gamma-ray and Electron detection efficiencies is discussed.