Article
Multidisciplinary Sciences
M. Bohman, V. Grunhofer, C. Smorra, M. Wiesinger, C. Will, M. J. Borchert, J. A. Devlin, S. Erlewein, M. Fleck, S. Gavranovic, J. Harrington, B. Latacz, A. Mooser, D. Popper, E. Wursten, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, S. Ulmer
Summary: The article introduces a new method to cool a single proton efficiently by resonantly coupling laser-cooled Be+ ions through a superconducting LC circuit. The application of this technique also helps to improve the precision of matter-antimatter comparisons and drive the exploration of dark matter.
Article
Physics, Multidisciplinary
Clemens Matthiesen, Qian Yu, Jinen Guo, Alberto M. Alonso, Hartmut Haffner
Summary: In this study, trapping of electrons in a millimeter-sized quadrupole Paul trap driven at 1.6 GHz in a room-temperature ultrahigh vacuum setup was demonstrated. Cold electrons were introduced into the trap by ionization of atomic calcium via Rydberg states and were confined by microwave and static electric fields for several tens of milliseconds. Some electrons remained trapped longer, showing no measurable loss for measurement times up to a second. Operating a similar electron Paul trap in a cryogenic environment may offer a platform for all-electric quantum computing with trapped electron spin qubits.
Article
Multidisciplinary Sciences
Nathaniel B. Vilas, Christian Hallas, Loic Anderegg, Paige Robichaud, Andrew Winnicki, Debayan Mitra, John M. Doyle
Summary: In this study, the successful magneto-optical trapping of a polyatomic molecule, calcium monohydroxide (CaOH), demonstrates the feasibility and practicality of laser cooling and trapping for polyatomic species. This achievement has significant implications for various applications in quantum science.
Article
Physics, Multidisciplinary
T. K. Langin, D. DeMille
Summary: Recent experiments have shown that it is possible to directly cool and trap diatomic and triatomic molecules in magneto-optical traps (MOTs). However, the density achieved in molecular MOTs is still 10(-5) times smaller than in atomic MOTs. The main limitations are the inefficiencies in slowing down molecules to capture velocities and the density limits within the MOT due to sub-Doppler heating. Driving 'Type-II' optical cycling transitions that involve dark states in Zeeman sublevels is necessary to avoid rotational branching. Simulations have been presented to address these limitations and pave the way for evaporative cooling of molecules to quantum degeneracy.
NEW JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Xinwei Zhou, Tianyi Li, Yi Cui, Melissa L. Meyerson, Jason A. Weeks, C. Buddie Mullins, Shengfeng Yang, Yuzi Liu, Likun Zhu
Summary: In this study, the microstructure and composition of germanium nanopores formed at the end of delithiation were investigated using different microscopy techniques, showing a significant accumulation of Li inside the nanopores.
APPLIED MATERIALS TODAY
(2021)
Article
Optics
Jing Bai, Cheng-Xian Ge, Zhen-Sen Wu
Summary: In this paper, an analytical method is presented to study the radiation force (RF) of chiral spheres generated by dual laser beams using the generalized Lorenz-Mie theory (GLMT). The method involves representing the incident laser beam using vector spherical harmonic functions (VSHFs) in the sphere system. The lateral and axial RF on the chiral sphere is derived based on the momentum conservation theory. The study of the RF of dual laser beams on chiral particles is important for improving optical tweezers technology and achieving high accuracy operation of chiral particles.
Article
Chemistry, Physical
Maoning Wang, Jieyi Zhang, Adila Adijiang, Xueyan Zhao, Min Tan, Xiaona Xu, Surong Zhang, Wei Zhang, Xinyue Zhang, Haoyu Wang, Dong Xiang
Summary: The manipulation of single molecules at room temperature still faces challenges, but by utilizing scanning tunneling microscope break junction (STM-BJ) techniques and localized surface plasmon (LSP)-assisted trapping, adjustable plasmonic nanogaps can be created and the formation of molecular junctions can be characterized.
Article
Physics, Multidisciplinary
H. Hirzler, E. Trimby, R. Gerritsma, A. Safavi-Naini, J. Perez-Rios
Summary: We theoretically investigate the trap-assisted formation of complexes in atom-ion collisions and their impact on the stability of the trapped ion. The formation of temporary complexes is facilitated by the time-dependent potential of the Paul trap, leading to significant impact on termolecular reactions and molecular ion formation. The complex formation rate depends on the amplitude of the ion's micromotion and persists even in a time-independent harmonic trap, indicating the essential role of atom-ion complexes in optical traps.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Analytical
Wanzhen Han, Shiyu Du, Caowei Tang, Yiling Li, Ting Jiang, Wei Xu
Summary: The integration of a liquid-phase ion trap with a miniature mass spectrometer improves detection sensitivity and enables enrichment and separation of ions, making it suitable for the analysis of low abundant target molecules.
ANALYTICA CHIMICA ACTA
(2022)
Article
Biochemical Research Methods
Kevin Rhine, Sophie Skanchy, Sua Myong
Summary: Biomolecular condensates are formed by intrinsically disordered protein and RNA molecules, promoting the formation of membraneless organelles in cells. The nucleation, condensation, and maturation of condensates are critical yet poorly understood processes. Single-molecule and ensemble methods can comprehensively quantify these processes.
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)
Review
Chemistry, Physical
Vipul Vilas Kusumkar, Michal Galambos, Eva Viglasova, Martin Dano, Jana Smelkova
Summary: The research on radioactive waste management is focused on mitigating the hazardous effects of radionuclides on the environment. Various techniques are used for separating these nuclides from the environment, with adsorbents being a key area of study. Ion-imprinted polymers are able to selectively remove specific metal ions from solution, making them promising materials in this field.
Article
Chemistry, Physical
Kunihiro Okada, Kazuhiro Sakimoto, Hans A. Schuessler
Summary: We experimentally studied the rotational cooling effect on the reaction rate constant of the gas-phase ion-polar-molecule reaction CH3F + Ca+ -> CH3 + CaF+ at low collision energies. Our results show that fluoromethane molecules exhibit higher reactivity as the rotational temperature decreases. The capture rate constants obtained from the Perturbed Rotational State (PRS) theory, assuming the rotational level distribution corresponding to the experimental conditions, also exhibit a strong dependence on the rotational level distribution, in accordance with our experimental findings. However, the PRS capture rate constants deviate from the measurement values, particularly when the fluoromethane molecules are rotationally cooled far below room temperature.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Polymer Science
Ye Jin Kim, Hee Ju Kim, Yu Jin Seo, Ji Hee Choi, Hye Young Koo, Won San Choi
Summary: This study presents a solar-driven unmanned device for trapping hazardous and noxious substances (HNSs) in the ocean. The device utilizes a reverse piloti structure for HNS absorption and evaporation, Al mirrors for light focusing, and a cooling line system for HNS condensation. The experimental results demonstrate that the device can effectively remove and collect toluene, xylene, and toluene-xylene.
Article
Chemistry, Analytical
Erlu Feng, Xin Ma, Hanning Jiang, Huaming Sheng, Caroline E. Rowell, Hilkka I. Kenttamaa
Summary: A tandem mass spectrometric method is introduced for the differentiation of sulfonate esters, sulfite esters, and sulfones. The reaction of diisopropoxymethylborane with protonated compounds generates diagnostic fragment ions that enable their identification. Ion-molecule reactions of diisopropoxymethylborane with other functionalities were also examined.
ANALYTICAL CHEMISTRY
(2022)
Article
Instruments & Instrumentation
P. Delahaye, M. Dubois, L. Maunoury, A. Annaluru, J. Angot, O. Bajeat, B. Blank, J. C. Cam, P. Chauveau, R. Frigot, S. Hormigos, B. Jacquot, P. Jardin, O. Kamalou, V. Kuchi, P. Lecomte, B. Osmond, B. M. Retailleau, A. Savalle, T. Stora, J. C. Thomas, V. Toivanen, E. Traykov, P. Ujic, R. Vondrasek
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2020)
Article
Instruments & Instrumentation
V. Kuchi, P. Jardin, C. Michel, L. Maunoury, M. Dubois, P. Delahaye, O. Bajeat, S. Hormigos, V. Metayer, M. MacCormick, B. Roussiere, J. Guillot
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2020)
Article
Instruments & Instrumentation
Laurent Maunoury, Mickael Dubois, Pierre Delahaye, Arun Annaluru, Olivier Bajeat, Romain Frigot, Stephane Hormigos, Bertrand Jacquot, Pascal Jardin, Benoit Osmond, Ujic Predrag, Blaise-Mael Retailleau, Alain Savalle, Ville Toivanen, Jean-Charles Thomas, Julien Angot, Patrick Sole, Thierry Lamy, Hannu Koivisto, Miha Marttinen, Olli Tarvainen
REVIEW OF SCIENTIFIC INSTRUMENTS
(2020)
Article
Multidisciplinary Sciences
R. X. Schuessler, H. Bekker, M. Brass, H. Cakir, J. R. Crespo Lopez-Urrutia, M. Door, P. Filianin, Z. Harman, M. W. Haverkort, W. J. Huang, P. Indelicato, C. H. Keitel, C. M. Koenig, K. Kromer, M. Mueller, Y. N. Novikov, A. Rischka, C. Schweiger, S. Sturm, S. Ulmer, S. Eliseev, K. Blaum
Article
Physics, Nuclear
M. Benali, G. Quemener, P. Delahaye, X. Flechard, E. Lienard, B. M. Retailleau
EUROPEAN PHYSICAL JOURNAL A
(2020)
Article
Multidisciplinary Sciences
Sascha Rau, Fabian Heisse, Florian Koehler-Langes, Sangeetha Sasidharan, Raphael Haas, Dennis Renisch, Christoph E. Duellmann, Wolfgang Quint, Sven Sturm, Klaus Blaum
Article
Quantum Science & Technology
K. Blaum, S. Eliseev, S. Sturm
Summary: In Penning traps, electromagnetic forces are utilized to confine charged particles for extended periods, allowing for precise measurements of fundamental constants and interactions. Various methods such as cooling can reduce the energy of trapped particles, enabling high-precision spectroscopy with highly charged ions.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
L. Maunoury, O. Kamalou, J. F. Cam, S. Damoy, P. Delahaye, M. Dubois, R. Frigot, S. Hormigos, C. Vandamme
Summary: The SPIRAL1 charge breeder is operating, but efficiencies of radioactive ion beams are lower than expected. Beam optics are crucial for achieving high efficiencies due to the low intensities of the radioactive ion beams and the difficulty in tuning the charge breeder.
JOURNAL OF INSTRUMENTATION
(2021)
Article
Physics, Multidisciplinary
P. Filianin, C. Lyu, M. Door, K. Blaum, W. J. Huang, M. Haverkort, P. Indelicato, C. H. Keitel, K. Kromer, D. Lange, Y. N. Novikov, A. Rischka, R. X. Schuessler, Ch. Schweiger, S. Sturm, S. Ulmer, Z. Harman, S. Eliseev
Summary: In this study, the cyclotron frequency ratio of Os-187(29+) to Re-187(29+) ions was measured with the Penning-trap mass spectrometer PENTATRAP, resulting in the most precise measurement to date. The total binding-energy difference of the 29 missing electrons in Re and Os was calculated, yielding a value of 53.5(10) eV. Finally, using the achieved results, the mass difference between neutral 187Re and Os-187, i.e., the Q value of the beta(-) decay of Re-187, was determined to be 2470.9(13) eV.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Nuclear
A. Annaluru, P. Delahaye, M. Dubois, L. Maunoury
Summary: This article presents a series of experiments carried out as part of the SPIRAL1 upgrade to understand the transport of monocharged ion beams through the ECR charge breeder ion source and investigate the physical processes involved in charge breeding. By simulating ion beam transport and tuning various parameters, the authors were able to reproduce experimental trends and discuss the contributions of different factors in the charge breeding process.
PHYSICAL REVIEW ACCELERATORS AND BEAMS
(2021)
Article
Chemistry, Physical
C. Ruano Merchan, T. T. Dorini, F. Brix, L. Pasquier, M. Jullien, D. Pierre, S. Andrieu, K. Dumesnil, S. S. Parapari, S. Sturm, J. Ledieu, M. Sicot, O. Copie, E. Gaudry, V Fournee
Summary: This study investigated the formation of new complex phases in thin films deposited on Al2O3(0001) substrate by pulsed laser deposition followed by high temperature annealing. The discovered phases include a large square approximant and a 2D hexagonal approximant, both constructed from similar basic tiles. The research also revealed differences in electronic structure and adhesion properties of the two approximants, suggesting unique chemical and physical characteristics.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(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
Quantum Science & Technology
Bingsheng Tu, Felix Hahne, Ioanna Arapoglou, Alexander Egl, Fabian Heisse, Martin Hoecker, Charlotte Koenig, Jonathan Morgner, Tim Sailer, Andreas Weigel, Robert Wolf, Sven Sturm
Summary: The coupling of two ion species in separate Penning traps is enhanced by a common tank circuit, allowing for efficient sympathetic cooling of arbitrary single ions for high-precision experiments. An intermittent laser cooling method is proposed and a theoretical description is provided to tune the coupling strength between the ion species in separate traps.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Proceedings Paper
Quantum Science & Technology
E. Lienard, P. Delahaye, X. Flechard, B. Pons, G. Quemener
RECENT PROGRESS IN FEW-BODY PHYSICS
(2020)
Article
Optics
F. Heisse, S. Rau, F. Koehler-Langes, W. Quint, G. Werth, S. Sturm, K. Blaum
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)
