Article
Materials Science, Multidisciplinary
T. Isoardi, A. Ferretti, L. Bonmassar, P. Manassero
Summary: This article presents the working principles of the sputter-ion pump and the method to simulate its performance using a model based on design parameters. The ion pumps from Agilent Technologies, including Diode VIP 40, 55, and 75, are used as reference for the simulation.
Review
Materials Science, Multidisciplinary
D. Depla
Summary: This paper discusses the impact of negative oxygen ions on film properties during reactive sputtering. Despite numerous studies on the subject, quantification is often lacking due to limited knowledge of negative ion yield for various oxides. The compilation of multiple literature sources provides a quantitative framework for the discussed trends.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Yi-Ping Luo, Mei-Jing Huang, Xiaoding Qi
Summary: In this study, epitaxial films of BiCuSeO were successfully grown on SrTtO(3) substrates with different orientations using RF magnetron sputter deposition. The orientation and growth rate of the films exhibited different patterns at different temperatures.
Article
Engineering, Multidisciplinary
Jian Geng, Xiaodong Wang, Meiru Guo, Shiwei Zhang, Yongjun Cheng, Yongchun Li, Haitao Li, Zhengyi Ren
Summary: A new calibration apparatus was developed to measure the low pumping speed of miniature sputter ion pump. The flowmeter method was found to perform better in measuring the low pumping speed compared to the orifice method.
Article
Chemistry, Physical
Shuting Fu, Xuefang Yu, Qili Wu, Xianfeng Yang, Zheng Liu, Xiaohui Li, Shiman He, Da Wang, Yanchun Li, Shengfu Tong, Mingmei Wu
Summary: The most feasible Li+ ion diffusion path in Li4Ti5O12 was determined to be along the [110] direction through theoretical analysis and computational investigation in this study, providing a direction for future material design and synthesis. Ultrathin [110]-confined LTO nanoflakes were prepared through targeted synthesis, demonstrating superior transport channels and efficient ion diffusion properties.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Forest C. Thompson, Frank M. Kustas, Kent E. Coulter, Grant A. Crawford
Summary: Ion irradiation is utilized in vapor deposition techniques to control the porosity and nanostructural evolution of transition metal nitride-based films. The study focused on V1-xSixN films deposited using a reactive magnetron sputtering process with the aid of a heated filament. Results showed that the use of the hot filament reduced porosity in the deposited films and increased film hardness and elastic modulus with filament discharge current.
Article
Multidisciplinary Sciences
L. Neri, L. Celona
Summary: A new plasma heating mechanism has been discovered, which achieves unprecedented beam stability and lower emittance in Microwave Discharge Ion Sources. This new mode of operation can be easily implemented in all existing sources.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
G. Greczynski, L. Hultman
Summary: The study found that Ar+ ion irradiation can affect the interpretation of XPS spectra, with varying degrees and effects of sputter damage for different material systems, necessitating a high level of caution during spectral interpretation.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Martin Becker, Florian Kuhl, Jonas Hauptmann, Jill Kessler, Sebastian L. L. Benz, Sangam Chatterjee, Angelika Polity, Peter J. J. Klar
Summary: Vanadium dioxide (VO2) is the most promising material for thermochromic smart windows due to its insulator-to-metal transition causing an abrupt change of transmittance near ambient temperature. TiO2 buffer layers are beneficial for the growth and performance of VO2 thin film. The growth conditions of VO2||TiO2 interface are crucial, and only rutile buffer layers significantly relieve the growth conditions needed.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
M. Kelemen, T. Schwarz-Selinger, A. Mutzke, M. Balden, E. Vassallo, M. Pedroni, D. Dellasega, M. Passoni, F. Romeo, A. Hakola, P. Pelicon, R. Zaplotnik, S. Markelj
Summary: The study found that the surface roughness has a significant influence on the sputter yield of Mo under keV D ion bombardment, with a strong angular dependence observed in the sputter yield. Smooth and moderately rough surfaces showed an increase in sputter yield at certain angles, while the highest roughness surfaces exhibited a decrease in sputter yield with increasing angle. The combination of measured and simulated data provides important insights for predicting erosion rates on surfaces in thermonuclear fusion devices.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Instruments & Instrumentation
J. McLain, M. Gott, J. Greene, R. Scott, R. Vondrasek
Summary: In this experiment, a radium-223 ion beam was generated using the electron cyclotron resonance ion source (ECR2) at the Argonne Tandem Linac Accelerator System (ATLAS). The radium-223 material was prepared as a sputter sample by dissolving radium nitrate into a solution and depositing it onto aluminum powder. The ion beam intensity and energy requirements were 1 x 10(6) particles/s and 1.07 GeV, respectively.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Materials Science, Multidisciplinary
D. M. Tshwane, R. Modiba, G. Govender, P. E. Ngoepe, H. R. Chauke
Summary: The adsorption of halogen molecules on Ti (110) surface was studied using a first-principle approach, revealing that the adsorption is exothermic and occurs through dissociation bonding. The HF molecule was shown to be more thermodynamically stable than the HI molecule, and halogen ions were found to favorably adsorb on the Ti (110) surface compared to halogen molecules. Adsorption energy strength was found to have a linear relationship with charge transfer, and electronic interaction was investigated through density of states and charge density difference analysis, showing electron depletion on Ti atom and charge accumulation on the halogen region.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Instruments & Instrumentation
Nikolai R. Lobanov, Thomas Tunningley, Peter Linardakis
Summary: An advanced grid-less retarding field analyzer was developed, which operated in energy distribution and absolute energy determination modes. Two different experimental geometries were used to verify the calculated resolution. The device was used for measuring absolute energies and energy distributions of various negative ions sputtered from solid cathode surfaces.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Physics, Applied
R. Mark Bradley, Gerhard Hobler
Summary: In this study, we analytically determine the average sputter yield Y for non-planar surfaces with slowly varying heights. We neglect nonlocal effects such as redeposition of sputtered material and secondary sputtering. Our analysis reveals that the leading order corrections to Y depend on the spatial averages of the square of the height gradients in the x and y directions. The constants of proportionality can be expressed in terms of the derivatives of the sputter yield for a flat surface with respect to the ion incidence angle.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Applied
Junji Kataoka, Sung-Lin Tsai, Takuya Hoshii, Hitoshi Wakabayashi, Kazuo Tsutsui, Kuniyuki Kakushima
Summary: The N-type conduction of sputter-deposited polycrystalline Al0.78Sc0.22N films was confirmed by Si ion implantation and activation annealing. However, the film surface is sensitive to humidity, leading to a significant increase in sheet resistance.
APPLIED PHYSICS EXPRESS
(2021)
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)