Article
Plant Sciences
Fan He, Yu-Feng Huang, Wei Dai, Xian-You Qu, Jing-Guang Lu, Chi-Chou Lao, Wen-Hui Luo, Dong-Mei Sun, Mei Wei, Sheng-Yuan Xiao, Ying Xie, Liang Liu, Hua Zhou
Summary: In this study, the TOF-SIMS image analysis technology was used for the first time to detect Chinese herbal medicine. Taking Coptis rhizome as an example, the distribution of nine active compounds in the cross-section of Coptis rhizome was studied. The results showed that these compounds had different distribution patterns in the cross-section and their contents increased with the growth years.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jani Linden, Jarmo Teuho, Riku Klen, Mika Teras
Summary: This study investigated whether TOF technology reduces error propagation from attenuation correction to PET image reconstruction in PET/MR neuroimaging. The results showed that TOF can slightly reduce average bias and standard deviation in the majority of the brain's volume-of-interest (VOI), but the overall effect on quantitative accuracy is small and significant only in certain attenuation maps with 525 ps timing resolution.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
A. M. Yanez-Serrano, I Filella, J. LLusia, A. Gargallo-Garriga, V Granda, E. Bourtsoukidis, J. Williams, R. Seco, L. Cappellin, C. Werner, J. de Gouw, J. Penuelas
Summary: The study created a master compound assignment guide called GLOVOCS to facilitate the research of multiple groups using PTR-MS to monitor VOCs and understand the mechanisms underlying their production and impact. Users can access and contribute to the identification of VOCs through the collaborative tool, aiming to provide evidence of biogenic or anthropogenic VOC origin and chemotaxonomic classification of compounds. Further cross-validation is highly recommended when using PTR-MS techniques.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Microbiology
Eloise J. Busby, Ronan M. M. Doyle, Clara Leboreiro Babe, Kathryn A. A. Harris, Damien Mack, Gema Mendez-Cervantes, Denise M. M. O'Sullivan, Vicky Pang, Zahra Sadouki, Priya Solanki, Jim F. F. Huggett, Timothy D. D. McHugh, Emmanuel Q. Q. Wey
Summary: Managing the transmission of antimicrobial resistance requires reliable methods for tracking outbreaks. MALDI-TOF MS was compared with orthogonal approaches for strain typing, including WGS and FTIR, for Acinetobacter baumannii isolates associated with a healthcare-associated infection event. Reliable molecular typing methods can help to trace transmission routes and manage outbreaks.
MICROBIOLOGY SPECTRUM
(2023)
Article
Agriculture, Multidisciplinary
Aipeng Hu, Fang Wei, Fenghong Huang, Ya Xie, Bangfu Wu, Xin Lv, Hong Chen
Summary: An ultrahigh-performance liquid chromatography coupled with mass spectrometry method was established for comprehensive lipidomic profiling of oilseeds, revealing significant variations in lipid composition and content among soybean, sesame, peanut, and rapeseed. The study provided a theoretical basis for the selection and breeding of oilseed varieties as well as processing of oilseed for the edible oil industry.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Microbiology
Chenyang He, Jianju Feng, Jing Su, Tao Zhang, Liyan Yu
Summary: This study constructed a supplementary database of MALDI-TOF MS and used it to identify yeast species from polar regions. The results showed that this identification method was accurate and suitable for polar yeasts.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biochemical Research Methods
Wenhao Liu, Huan He, Zhiqiang Li, Qiang Zhou, Bin Zhou, Zhi Feng Li, Tongfei Zhu, Yulin Feng
Summary: In this study, the chemical composition of Sabia parvi-flora was analyzed using ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. A rapid and accurate method, based on the characteristic ion filtration, was utilized to identify the chemical components, resulting in the identification of 104 components, including 12 potentially novel compounds. This method provides an important basis for basic chemical research in Sabia parvi-flora.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Analytical
Liang Shan, Han Gao, Jing Zhang, Wentao Li, Yue Su, Yinlong Guo
Summary: This study combined MALDI-TOF MS with EM technology to directly analyze exosomal proteins in human plasma and serum. The results showed that EM had higher sensitivity in the high-mass range and characteristic exosomal proteins were identified. Furthermore, when using EM as a detector, there was a good linear relationship between peak intensity and concentration.
Article
Biochemical Research Methods
Xiuwei Du, Lianghao Yuan, Shijie Gao, Yuanting Tang, Zhiyi Wang, Chun-Qin Zhao, Li Qiao
Summary: This article reviews the newly developed categories of MALDI matrices in recent years and analyzes the potential applications, advantages, and disadvantages of various matrices. It also prospects the future development prospects of nanomaterial-based matrices.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Analytical
Xiangwei Tian, Haowen Jiang, Meng Wang, Wenbin Cui, Yingying Guo, Lingna Zheng, Ligang Hu, Guangbo Qu, Yongguang Yin, Yong Cai, Guibin Jiang
Summary: To meet the demand for multi-element/isotope analysis at the single nanoparticle (NP) or cell level, different types of inductively coupled plasma mass spectroscopy (ICP-MS) have been used to simultaneously monitor multiple mass-to-charge ratios in single-particle/cell ICP-MS (SP/SC-ICP-MS) analysis. Systematic evaluation and comparison of the performance of these techniques are urgently required.
ANALYTICA CHIMICA ACTA
(2023)
Article
Food Science & Technology
Hailian Wei, Dandan Yang, Jin Mao, Qi Zhang, Ling Cheng, Xianglong Yang, Peiwu Li
Summary: This article introduces a strategy for accurate quantification of triacylglycerols (TAGs) in edible oils, which can be used for identifying adulteration in olive oil. The results showed that this strategy significantly improves the accuracy of TAG content determination, reduces the relative error of fatty acids (FAs) content determination, and has a wider accurate quantitative range than gas chromatography-flame ionization detection. Importantly, this strategy combined with principal component analysis can be used to identify adulteration of high-priced olive oil with cheaper soybean oils, rapeseed oils, or camellia oils at a concentration as low as 2%. These findings suggest that the proposed strategy could be considered as a potential method for analyzing the quality and authenticity of edible oils.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Medical Laboratory Technology
Ming-Hui Yang, Shih-Cheng Chen, Ko-Chin Chen, Han-Ping You, Hsin-Yi Wu, Yi-Ming Arthur Chen, Ying-Fong Huang, Ming-Yii Huang, Cheng-Hui Yuan, Po-Chiao Lin, Yu-Chang Tyan
Summary: The study introduced a method to quantify progesterone concentration in human serum based on isotope dilution mass spectrometry. By extracting and cleaning serum samples, combined with mass spectrometry, progesterone concentration could be accurately determined. Results demonstrated that this method showed good robustness and consistency in measuring progesterone levels.
CLINICA CHIMICA ACTA
(2021)
Article
Environmental Sciences
Bongekile Vilakati, Sivasankar Venkataraman, Hlengilizwe Nyoni, Bhekie B. Mamba, Kiyoshi Omine, Titus A. M. Msagati
Summary: A pyrolysis GC-ToF-MS-based analytical study was conducted to identify microplastics in the freshwater of Rietvlei dam in Gauteng Province, South Africa. The study found that the microplastics contained different plastic polymers and additives, with PA being the most dominant polymer. The presence of microplastics in the freshwater is likely caused by industrial activities and poor waste management, and it can have negative impacts on the ecosystem and human health.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Chemistry, Analytical
Iyyakkannu Sivanesan, Judy Gopal, Rohit Surya Vinay, Elizabeth Hanna Luke, Jae-Wook Oh, Manikandan Muthu
Summary: This review evaluates the application of MALDI TOF-MS in clinical pathogens and highlights its milestones and shortcomings in COVID-19 analysis. It emphasizes the importance of MALDI-TOF-MS and calls for further scientific attention for COVID-19 analysis.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zhizhong Li, Madjid Hadioui, Kevin J. J. Wilkinson
Summary: This study investigated the analysis of Si-NPs in soil using single-particle ICP-MS. A size detection limit of 29 +/- 3 nm was achieved in Milli-Q water. Na4P2O7 was found to be the best extractant for Si-NP, preserving their size distribution for at least one month.
Article
Computer Science, Interdisciplinary Applications
J. Karthein, D. Atanasov, K. Blaum, D. Lunney, V Manea, M. Mougeot
Summary: Developed in Python language with ROOT data analysis framework, the code presents a new phase-determination approach with up to 10 times smaller statistical uncertainties for PI-ICR mass spectrometry method. This improvement is confirmed via Monte-Carlo simulations, allowing for high-precision studies of exotic nuclear masses to test the standard model of particle physics.
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Instruments & Instrumentation
V Lagaki, H. Heylen, I Belosevic, P. Fischer, C. Kanitz, S. Lechner, F. M. Maier, W. Noertershaeuser, P. Plattner, M. Rosenbusch, S. Sels, L. Schweikhard, M. Vilen, F. Wienholtz, R. N. Wolf, S. Malbrunot-Ettenauer
Summary: The study compares traditional single-pass collinear laser spectroscopy with MIRACLS' multi-pass mode and measures the isotope shift between magnesium isotopes, with results consistent with literature values, showing a measurement accuracy better than 20 MHz in the new apparatus.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Instruments & Instrumentation
A. E. Barzakh, A. N. Andreyev, D. Atanasov, J. G. Cubiss, R. D. Harding, M. Al Monthery, N. A. Althubiti, B. Andel, S. Antalic, J. Ballof, K. Blaum, T. E. Cocolios, P. Van Duppen, T. Day Goodacre, A. de Roubin, C. Duchemin, G. J. Farooq-Smith, D. V. Fedorov, V. N. Fedosseev, D. A. Fink, L. P. Gaffney, L. Ghys, M. Huyse, N. Imai, J. Johnson, S. Kreim, D. Lunney, K. M. Lynch, V. Manea, B. A. Marsh, Y. Martinez Palenzuela, P. L. Molkanov, D. Neidherr, V. N. Panteleev, M. Rosenbusch, R. E. Rossel, S. Rothe, L. Schweikhard, M. D. Seliverstov, S. Sels, C. Van Beveren, E. Verstraelen, A. Welker, F. Wienholtz, R. N. Wolf, K. Zuber
Summary: The yield of radioactive gold nuclei produced in a thick uranium target at ISOLDE (CERN) by 1.4-GeV protons was measured. The efficiency curve, which shows the production-efficiency dependence on the half-life, was derived using in-target production calculations. Irregularities in the efficiency curve for long-lived high-spin gold isomers were found, and three release models were tested for the description of the efficiency curve.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2022)
Article
Physics, Multidisciplinary
S. Malbrunot-Ettenauer, S. Kaufmann, S. Bacca, C. Barbieri, J. Billowes, M. L. Bissell, K. Blaum, B. Cheal, T. Duguet, R. F. Garcia Ruiz, W. Gins, C. Gorges, G. Hagen, H. Heylen, J. D. Holt, G. R. Jansen, A. Kanellakopoulos, M. Kortelainen, T. Miyagi, P. Navratil, W. Nazarewicz, R. Neugart, G. Neyens, W. Noertershauser, S. J. Novario, T. Papenbrock, T. Ratajczyk, P. G. Reinhard, L. Rodriguez, R. Sanchez, S. Sailer, A. Schwenk, J. Simonis, V Soma, S. R. Stroberg, L. Wehner, C. Wraith, L. Xie, Z. Y. Xu, X. F. Yang, D. T. Yordanov
Summary: Collinear laser spectroscopy was used to study the nuclear charge radii of nickel isotopes. Three ab initio methods were compared, with agreement in differential radii but only the NNLOsat method showing consistent absolute radii. The Skyrme functional SV-min was found to match experimental results more closely in nuclear density functional theory.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
F. M. Fraenkle, A. Schaller, K. Blaum, L. Bornschein, G. Drexlin, F. Glueck, V. Hannen, F. Harms, D. Hinz, K. Johnston, J. Karthein, U. Koester, A. Lokhov, S. Mertens, F. Mueller, A. Osipowicz, P. C. -O. Ranitzsch, K. Schloesser, T. Thuemmler, N. Trost, C. Weinheimer, J. Wolf
Summary: The goal of the KATRIN experiment is to determine the effective electron antineutrino mass with high sensitivity, which requires a very low background level. This paper introduces the possibility of alpha decays on the inner surface of the KATRIN Main Spectrometer as a background source and presents measurements performed to study alpha decay induced background processes. The results show a clear correlation between the alpha activity on the inner spectrometer surface and the background from the volume of the spectrometer, indicating a significant contribution of alpha decay induced events to the residual KATRIN background.
ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
S. W. Bai, A. Koszorus, B. S. Hu, X. F. Yang, J. Billowes, C. L. Binnersley, M. L. Bissell, K. Blaum, P. Campbell, B. Cheal, T. E. Cocolios, R. P. de Groote, C. S. Devlin, K. T. Flanagan, R. F. Garcia Ruiz, H. Heylen, J. D. Holt, A. Kanellakopoulos, J. Kraemer, V. Lagaki, B. Maass, S. Malbrunot-Ettenauer, T. Miyagi, R. Neugart, G. Neyens, W. Noertershaeuser, L. V. Rodriguez, F. Sommer, A. R. Vernon, S. J. Wang, X. B. Wang, S. G. Wilkins, Z. Y. Xu, C. X. Yuan
Summary: The electric quadrupole moment of Sc-49 was measured with improved precision, and the electromagnetic moments of Z = 21 and N = 28 isotopes were investigated to study single-particle behavior and nucleon-nucleon correlations. The experimental data were interpreted using different calculation methods, and they provide an important benchmark for further theoretical developments.
Article
Instruments & Instrumentation
K. Raspe, M. Mueller, N. Iwe, R. N. Wolf, P. Oelssner, F. Martinez, L. Schweikhard, K. -h. Meiwes-Broer, J. Tiggesbaeumker
Summary: This study presents an experimental setup and procedure for generating size and charge-state selected polyanions from monoanions using metal clusters as an example. The setup allows for the further charging process via sequential electron attachment, and the rf-based concept permits access to heavy particles. The capabilities of the setup are demonstrated by analyzing the electronic and optical properties of polyanionic metal clusters.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Instruments & Instrumentation
F. M. Maier, M. Vilen, I. Belosevic, F. Buchinger, C. Kanitz, S. Lechner, E. Leistenschneider, W. Noertershaeuser, P. Plattner, L. Schweikhard, S. Sels, F. Wienholtz, S. Malbrunot-Ettenauer
Summary: MIRACLS uses MR-ToF device to trap ion bunches of short-lived radioisotopes, allowing high-resolution CLS observation of more exotic radionuclides. Compared to traditional CLS, it increases the experimental sensitivity by more than one to two orders of magnitude by enabling multiple probing of the same ion bunch.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Instruments & Instrumentation
F. M. Maier, F. Buchinger, L. Croquette, P. Fischer, H. Heylen, F. Hummer, C. Kanitz, A. A. Kwiatkowski, V. Lagaki, S. Lechner, E. Leistenschneider, G. Neyens, P. Plattner, A. Roitman, M. Rosenbusch, L. Schweikhard, S. Sels, M. Vilen, F. Wienholtz, S. Malbrunot-Ettenauer
Summary: Isobaric contamination is a common issue in radioactive ion beam (RIB) experiments. Multi-Reflection Time-of-Flight (MR-ToF) devices have been widely used for mass separation, but the presence of space-charge effects limits their application. This study uses ion-optical simulations to investigate different ion preparation schemes and MR-ToF operation, and suggests that advanced ion-beam preparation techniques can reduce processing time, but also increase space-charge effects.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Physics, Nuclear
Vladimir Manea, Maxime Mougeot, David Lunney
Summary: We present an updated view on the phenomenon of mutually enhanced magicity based on current experimental knowledge of atomic masses. Proton and neutron empirical shell gaps are discussed along magic number chains and neighbouring isotonic chains. The empirical shell-gap trend is anti-correlated to the one observed along magic-number chains. The role of quadrupole correlations for explaining the full range of experimental information is emphasized.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Physics, Multidisciplinary
S. Sels, F. M. Maier, M. Au, P. Fischer, C. Kanitz, V Lagaki, S. Lechner, E. Leistenschneider, D. Leimbach, E. M. Lykiardopoulou, A. A. Kwiatkowski, T. Manovitz, Y. N. Vila Gracia, G. Neyens, P. Plattner, S. Rothe, L. Schweikhard, M. Vilen, R. N. Wolf, S. Malbrunot-Ettenauer
Summary: At radioactive ion beam (RIB) facilities, the ion-beam quality for subsequent experiments is improved by cooling and bunching ions of short-lived radionuclides in buffer-gas-filled Paul traps. Doppler and sympathetic cooling are employed in a Paul trap cooler-buncher to deliver even colder ions, beneficial to RIB experiments' sensitivity or accuracy. The improved ion-beam quality is demonstrated by reduced time-of-flight spread of the extracted ion bunches for Mg+, K+, and O-2(+) ion beams with respect to room-temperature buffer-gas cooling. Combining a low-pressure helium background gas with laser cooling enables the cooling of externally-produced hot ions down to a few Kelvin in a short timescale, making it suitable for cooling short-lived radioactive ions. The use of this technique in RIB research increases the mass-resolving power in a multireflection time-of-flight mass spectrometer, showing good agreement with simulations and guiding further improvements and applications. These results open a pathway to significant emittance improvement and unprecedented ion-beam qualities at RIB facilities using readily available standard equipment. This method also provides opportunities for future high-precision experiments with radioactive cold trapped ions.
PHYSICAL REVIEW RESEARCH
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Chris R. J. Charles, Friedhelm Ames, Oliver Kester, S. Malbrunot-Ettenauer, Carla Babcock, Brad E. Schultz, Cameron Peters, Erin L. Flannigan, Jean-Francois Alary, Aurelia Laxdal, Peter Kunz, Jens Lassen, Andrea Teigelhoefer, Phil J. A. McCausland, Roberta Flemming
Summary: This study proposes using RFQ gas-reaction cells to produce radioactive molecules through room temperature reactions. This method allows for the production of a wide range of new and diverse radioactive molecular beams that are difficult or impossible to create using traditional targets, opening up possibilities for groundbreaking research in Beyond Standard Model physics.
19TH INTERNATIONAL CONFERENCE ON ION SOURCES - ICIS2021
(2022)
Article
Physics, Nuclear
T. Aumann, W. Bartmann, O. Boine-Frankenheim, A. Bouvard, A. Broche, F. Butin, D. Calvet, J. Carbonell, P. Chiggiato, H. De Gersem, R. De Oliveira, T. Dobers, F. Ehm, J. Ferreira Somoza, J. Fischer, M. Fraser, E. Friedrich, A. Frotscher, M. Gomez-Ramos, J-L Grenard, A. Hobl, G. Hupin, A. Husson, P. Indelicato, K. Johnston, C. Klink, Y. Kubota, R. Lazauskas, S. Malbrunot-Ettenauer, N. Marsic, W. F. O. Mueller, S. Naimi, N. Nakatsuka, R. Necca, D. Neidherr, G. Neyens, A. Obertelli, Y. Ono, S. Pasinelli, N. Paul, E. C. Pollacco, D. Rossi, H. Scheit, M. Schlaich, A. Schmidt, L. Schweikhard, R. Seki, S. Sels, E. Siesling, T. Uesaka, M. Vilen, M. Wada, F. Wienholtz, S. Wycech, S. Zacarias
Summary: PUMA is a nuclear physics experiment that aims to study the surface properties of stable and rare isotopes using low-energy antiprotons. By transporting low-energy antiprotons to radioactive nuclei, PUMA can measure the emitted radiation and gain insights into the isospin composition of the nuclear-radial-density tail.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Atomic, Molecular & Chemical
Jekabs Romans, Anjali Ajayakumar, Martial Authier, Frederic Boumard, Lucia Caceres, Jean-Francois Cam, Arno Claessens, Samuel Damoy, Pierre Delahaye, Philippe Desrues, Antoine Drouart, Patricia Duchesne, Rafael Ferrer, Xavier Flechard, Serge Franchoo, Patrice Gangnant, Ruben P. de Groote, Sandro Kraemer, Nathalie Lecesne, Renan Leroy, Julien Lory, Franck Lutton, Vladimir Manea, Yvan Merrer, Iain Moore, Alejandro Ortiz-Cortes, Benoit Osmond, Julien Piot, Olivier Pochon, Blaise-Mael Retailleau, Herve Savajols, Simon Sels, Emil Traykov, Juha Uusitalo, Christophe Vandamme, Marine Vandebrouck, Paul Van den Bergh, Piet Van Duppen, Matthias Verlinde, Elise Verstraelen, Klaus Wendt
Summary: This article presents the initial results from the S-3 Low-Energy Branch gas cell setup at SPIRAL2-GANIL. The setup is currently being commissioned offline to optimize the operating conditions, providing high-efficiency and low-energy spatial spread for the targeted isotopes. The article also includes measurements of transmission and mass-resolving power for the different components of the S-3-LEB setup, as well as the first proof-of-principle experiments using a pulsed-titanium-sapphire laser system in an offline laser laboratory.
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)
