Article
Instruments & Instrumentation
J. Lassen, R. Li, M. Mostamand, A. Gacsbaranyi, P. Kunz, C. Babcock, D. Bishop, A. Teigelhofer, F. Ames, A. Gottberg
Summary: Recent developments at TRIUMF's RILIS focus on improving ionization schemes using auto-ionizing resonances, enhancing efficiency and reliability of RILIS operation, and meeting the increased demands for complex beam delivery modes by experimenters.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Instruments & Instrumentation
Reinhard Heinke, Mia Au, Cyril Bernerd, Katerina Chrysalidis, Thomas E. Cocolios, Valentin N. Fedosseev, Isabel Hendriks, Asar A. H. Jaradat, Magdalena Kaja, Tom Kieck, Tobias Kron, Ralitsa Mancheva, Bruce A. Marsh, Stefano Marzari, Sebastian Raeder, Sebastian Rothe, Dominik Studer, Felix Weber, Klaus Wendt
Summary: We describe the development of a specialized resonance ionization laser ion source for high-resolution spectroscopy applications, which can overcome the limitations of hot cavity Doppler broadening and can be used for online experiments at CERN-ISOLDE. The newly developed PI-LIST ion source allows for perpendicular laser and atom beam interaction, and has a demonstrated spectral linewidth of 200-300 MHz, with the potential to achieve even narrower linewidths below 100 MHz. Compared to standard in-source laser ionization, this ion source shows a significant reduction in efficiency, but its implementation at thick target radioactive ion beam facilities can greatly enhance nuclear structure investigations without the need for dedicated experimental beam line setups, and can facilitate the delivery of isomer-pure beams to experimental stations.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Biochemical Research Methods
Rebecca Brendel, Sascha Rohn, Philipp Weller
Summary: The study aimed to enhance the selectivity of IMS for isomeric monoterpenes by adding NO as a dopant, leading to the formation of additional product ions and improved discrimination of monoterpenes in volatile profiles. The use of NO as a dopant facilitated the identification of monomeric, dimeric, and trimeric ion clusters, shedding light on isomerization mechanisms in the ion signals.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
M. Turek
Summary: This study proposes a theoretical model for ionization and ion extraction in hot cavity ion sources. The model allows for the calculation of total ionization efficiency and the investigation of changes in ion and neutral particle numbers within the cavity. The study also introduces an alternative description of the system in terms of total particle numbers and the difference between neutrals and ions, which can facilitate understanding of the system dynamics. The model's capabilities are demonstrated through calculation examples, showing the potential for achieving high ionization efficiencies not predicted by the Saha-Langmuir formula.
ACTA PHYSICA POLONICA A
(2022)
Article
Multidisciplinary Sciences
Constantin Bernert, Stefan Assenbaum, Florian-Emanuel Brack, Thomas E. Cowan, Chandra B. Curry, Marco Garten, Lennart Gaus, Maxence Gauthier, Sebastian Goede, Ilja Goethel, Siegfried H. Glenzer, Thomas Kluge, Stephan Kraft, Florian Kroll, Michael Kuntzsch, Josefine Metzkes-Ng, Markus Loeser, Lieselotte Obst-Huebl, Martin Rehwald, Hans-Peter Schlenvoigt, Christopher Schoenwaelder, Ulrich Schramm, Mathias Siebold, Franziska Treffert, Tim Ziegler, Karl Zeil
Summary: Due to the non-linear nature of relativistic laser induced plasma processes, precise numerical modeling is required for the development of laser-plasma accelerators. This study successfully utilized an off-harmonic optical probe laser setup to investigate the interaction of a high-intensity laser with a solid-density cylindrical cryogenic hydrogen jet target. The experimental observations were supported by three dimensional particle-in-cell simulations.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Deeksha Kanti, J. Z. Kaminski, Liang-You Peng, K. Krajewska
Summary: This study presents a comprehensive theoretical treatment of laser-assisted electron-atom radiative recombination in the presence of short laser pulses. The formulation avoids various unphysical effects observed in previous works and accounts for a contribution from the field-free process. It demonstrates that the energy distribution of emitted radiation consists of a point spectrum embedded in a continuum, determined by the laser field, with comb structures appearing in the radiation spectrum in the case of a train of pulses.
Article
Oncology
Daria Boscolo, Daria Kostyleva, Mohammad Javad Safari, Vasiliki Anagnostatou, Juha Aysto, Soumya Bagchi, Tim Binder, Georgios Dedes, Peter Dendooven, Timo Dickel, Vasyl Drozd, Bernhard Franczack, Hans Geissel, Chiara Gianoli, Christian Graeff, Tuomas Grahn, Florian Greiner, Emma Haettner, Roghieh Haghani, Muhsin N. Harakeh, Felix Horst, Christine Hornung, Jan-Paul Hucka, Nasser Kalantar-Nayestanaki, Erika Kazantseva, Birgit Kindler, Ronja Knoebel, Natalia Kuzminchuk-Feuerstein, Bettina Lommel, Ivan Mukha, Chiara Nociforo, Shunki Ishikawa, Giulio Lovatti, Munetaka Nitta, Ikechi Ozoemelam, Stephane Pietri, Wolfgang R. Plass, Andrej Prochazka, Sivaji Purushothaman, Claire-Anne Reidel, Heidi Roesch, Fabio Schirru, Christoph Schuy, Olga Sokol, Timo Steinsberger, Yoshiki K. Tanaka, Isao Tanihata, Peter Thirolf, Walter Tinganelli, Bernd Voss, Uli Weber, Helmut Weick, John S. Winfield, Martin Winkler, Jianwei Zhao, Christoph Scheidenberger, Katia Parodi, Marco Durante
Summary: This study discusses the development and application of PET technology in particle therapy, proposing a new approach for treating tumors in small animals using radioactive ion beams. The BARB experiment is ongoing at GSI in Darmstadt, aiming to produce radioactive ion beams for cancer therapy through synchrotron intensity upgrades and isotopic separation with a fragment separator.
FRONTIERS IN ONCOLOGY
(2021)
Article
Physics, Multidisciplinary
Alexander Golombek, Lars Breuer, Lisa Danzig, Paul Kucharczyk, Marika Schleberger, Klaus Sokolowski-Tinten, Andreas Wucher
Summary: Ion beams in the keV regime are commonly used in solid-state physics, but the ultrafast dynamics triggered by ion impacts on surfaces are currently only accessible through simulations. Experimental access to this process may be achieved through a laser-synchronized ion source, as demonstrated in this study. The study showcases a new miniaturized ion optical setup for generating rare gas ion pulses using femtosecond laser photoionization, with results showing good agreement with ion trajectory simulations.
NEW JOURNAL OF PHYSICS
(2021)
Article
Chemistry, Analytical
Katsunori Yoshinaga, Nguyen Hao, Totaro Imasaka, Tomoko Imasaka
Summary: In this study, a miniature time-of-flight mass analyzer was developed for mass spectrometry analysis in combination with a compact highly-repetitive femtosecond laser and a time-correlated single ion counting system. The mass spectrometer allowed on-site real-time monitoring of different substances in the air and effectively suppressed interference from nitrogen and oxygen.
ANALYTICA CHIMICA ACTA
(2022)
Article
Multidisciplinary Sciences
F. Mirani, A. Maffini, F. Casamichiela, A. Pazzaglia, A. Formenti, D. Dellasega, V Russo, D. Vavassori, D. Bortot, M. Huault, G. Zeraouli, V Ospina, S. Malko, J. Apinaniz, J. A. Perez-Hernandez, D. De Luis, G. Gatti, L. Volpe, A. Pola, M. Passoni
Summary: Among elemental characterization techniques, laser-driven PIXE and laser-driven EDX are widely used in different scientific and technological fields. Compact and portable laser-driven particle sources show potential for materials analysis, especially in materials science applications. Results demonstrate successful quantitative information about sample structure can be obtained using proton beam through laser-driven PIXE analysis.
Article
Engineering, Biomedical
D. Kostyleva, S. Purushothaman, P. Dendooven, E. Haettner, H. Geissel, I Ozoemelam, C. Schuy, U. Weber, D. Boscolo, T. Dickel, V Drozd, C. Graeff, B. Franczak, C. Hornung, F. Horst, E. Kazantseva, N. Kuzminchuk-Feuerstein, I Mukha, C. Nociforo, S. Pietri, C. A. Reidel, H. Roesch, Y. K. Tanaka, H. Weick, J. Zhao, M. Durante, K. Parodi, C. Scheidenberger
Summary: This experiment studied the precision of range measurement for positron-emitting carbon isotopes using PET technology in ion beam therapy. The uncertainty of range determination is influenced by PET counting statistics. The uncertainties for C-11, C-10, and C-12 isotopes are 0.7 mm, 0.04 mm, and 1.3 mm, respectively. Compared to C-11, C-10 exhibits better precision due to its shorter half-life, which allows for the inclusion of in-spill data in image formation.
PHYSICS IN MEDICINE AND BIOLOGY
(2023)
Article
Instruments & Instrumentation
D. Atanasov, F. Cresto, L. Nies, M. Pomorski, M. Versteegen, P. Alfaurt, V. Araujo-Escalona, P. Ascher, B. Blank, L. Daudin, D. Guillet, X. Flechard, J. Ha, A. Husson, M. Gerbaux, J. Giovinazzo, S. Grevy, T. Kurtukian-Nieto, L. Leterrier, R. Lica, E. Lienard, C. Mihai, C. Neacsu, A. Ortega-Moral, G. Pascovici, M. Roche, N. Severijns, S. Vanlangendonck, A. Welker, D. Zakoucky
Summary: The article discusses the Weak Interaction Studies with 32Ar Decay (WISArD) experiment, which aims to extend the limits on scalar and tensor currents in the weak interaction and search for physics beyond the Standard Model. The evaluation of these limits relies on measuring the proton energy in beta-delayed proton emission, and the method tries to improve previous studies by considering positron-proton coincidences. Simulations were used to optimize the ion beam transport efficiency and validate proof-of-principle results obtained in November 2018. Upgrades are ongoing to improve the overall performance of the setup.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Chemistry, Physical
Shuai Zhang, Xincheng Wang, Wenbin Jiang, Yizhu Zhang, Yuhai Jiang, Zhiyuan Zhu
Summary: The photoion-photoion coincidence (PIPICO) method is a simple and effective approach for selecting specific dissociation channels with correlated fragments in molecules. In this study, a new method called charge-encoded multi-photoion coincidence (cMUPICO) is proposed, which takes into account the charge of individual fragments and allows for clear display of coincident channels with fragments of different charge states in dissociation channels.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Engineering, Environmental
Ljiljana Matovic, Radojka Vujasin, Ksenija Kumric, Aleksandar Devecerski, Yi-nan Wu, Daniel Manaye Kabtamu, Marija Mirkovic, Mia Omerasevic, Djordje Petrovic
Summary: Enhanced degradation of organic dye was achieved using waste tire granules and spent sealed radioactive sources. Waste tire char was used as an adsorbent matrix for synergetic adsorption/irradiation degradation of organic dye. OH radicals played a crucial role in the radiocatalytic degradation process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Instruments & Instrumentation
F. Maldonado Millan, C. Babcock, T. Day Goodacre, A. Gottberg
Summary: The TRIUMF-FEBIAD ion source is commonly used for generating radioactive ion beams of molecules, halogens, and noble gases. Recent experiments have shown room for operational improvement, particularly by increasing thermionic emission from the hot cathode. However, reliability issues in the thermo-mechanical aspect of the source have also been identified. To address excessive heating-induced failures, a simulation campaign was conducted to enhance the reliability and performance of the FEBIAD ion source. This paper presents the results of a simulation-based optimization campaign that can improve the overall ionization efficiency and robustness of the TRIUMF-FEBIAD ion source.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Instruments & Instrumentation
Taisei Hayashi, Kensei Ichiba, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Cr-doped Mg4Ta2O9 single crystals with different doping levels were synthesized using the floating zone method, and their photoluminescence and scintillation properties were evaluated. The results showed that Cr-doped Mg4Ta2O9 single crystals exhibited broad emission bands in the near-infrared region and showed scintillation characteristics within specific wavelength ranges. Additionally, the samples with different Cr doping levels demonstrated different lower detection limits based on the dose rate response function.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
S. Marouf, A. C. Chami, Y. Boudouma
Summary: This study develops a Monte Carlo simulation approach to describe proton-induced secondary electron emission in solids. Theoretical modeling based on the Mott's elastic scattering cross-section and Lindhard's dielectric function was used to calculate the double differential cross-section (DDCS) of excited electrons and describe electron transport in the medium. The results for aluminum show the angular and energy distributions of backscattered electrons for incident protons with energy below 25 keV at normal incidence, and the total electron emission yield also agrees well with available measurements.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
Weipeng Yan, Baojun Duan, Zijian Zhu, Yan Song, Guzhou Song, Jiming Ma, Binkang Li, Yucheng Liu
Summary: This article reports on the scintillation performance of Lithium-doped 2D (PEA)2PbBr4 perovskite single crystals synthesized at room temperature. The crystals exhibit fast decay time, high light yield, and high spatial resolution, making them highly promising for medical diagnostic applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
S. B. Vishwakarma, S. K. Dubey, R. L. Dubey, I. Sulania, D. Kanjilal
Summary: Investigations have been conducted on the implanted SiO2 thin film after thermal annealing using various analytical techniques. The results revealed the absence of vacancy defects, variations in vibrational modes and the formation of new structures. The photoluminescence intensity of the annealed SiO2 samples was higher, with a decrease in non-radiative defect centers and an increase in radiative Si:SiO2 interface states. Additionally, the presence of silicon nanoclusters formed after annealing resulted in an additional radiative recombination peak. Furthermore, the formation of new SiOx structures was observed after thermal annealing.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
M. Koshimizu, S. Kurashima, A. Kimura, M. Taguchi
Summary: By observing the scintillation time profiles of CeF3 under irradiations of pulsed beams with different LETs, we found that the initial decay was faster for higher LET, which is consistent with previous studies on other self-activated scintillators. This faster decay at higher LET can be explained by the competition between the scintillation caused by 5d-4f transition of Ce3+ ions and quenching due to the interaction between excited Ce3+ ions close to each other.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
Junjie Shi, Jianhong Hao, Fang Zhang, Qiang Zhao, Bixi Xue, Jieqing Fan, Zhiwei Dong
Summary: This study examined the neutralization process and beam quality of a hydrogen beam by emitting negative hydrogen ions to a hydrogen target. The findings showed that the neutralization efficiency was influenced by variables such as the transport distance, energy, and target gas density. However, the maximal neutralization efficiency was not affected by the density of the target gas or the energy of the negative hydrogen ions.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
