Article
Computer Science, Interdisciplinary Applications
Vipin Shukla, Mainak Bandyopadhyay, Vivek Pandya, A. Pandey, A. Maulik
Summary: This paper presents an AI-driven model for predicting the outputs of the ion source HELEN-I, using a heuristic global optimization algorithm to select the optimal input parameters without real-time experiments. Experimental studies confirm the effectiveness of this approach.
ENGINEERING WITH COMPUTERS
(2022)
Article
Physics, Fluids & Plasmas
Tianliang Zhang, Ruilin Cui, Ruoyu Han, Feng He, Wanying Zhu, Zhangyu Xia, Ying Cui, Jiting Ouyang
Summary: Nitrogen (N-2) helicon plasma is generated using a radio frequency (RF) right-helical antenna at low pressures. Various wave modes and their transitions are observed in the N-2 helicon discharge. A blue core phenomenon is achieved under high magnetic fields and RF powers, resulting in strong blue light emissions and high electron temperature. Based on analysis of species kinetics, it is found that N-2 molecules are heavily dissociated and ionized in the blue core. The significant enhancement of N II emissions is attributed to the depletion of N-2 and N neutrals, as well as the high electron temperature. The external magnetic field plays an important role in controlling the discharge mode transitions and plasma distributions.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Heiko Kromer, Robert Adams, Horst-Michael Prasser
Summary: A compact D-D fast neutron generator system was developed for imaging applications, with stable operation and a neutron yield estimated to be 6·10^7 s^-1. The emitting spot size was experimentally determined to be between 1.7 and 2.6 mm, showing favorable comparison to commercially available neutron generators.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Nuclear Science & Technology
R. Jacquier, R. Agnello, M. Baquero-Ruiz, H. Bergerioux, Ph. Guittienne, A. A. Howling, L. Kadi, R. Karimov, C. Stollberg, S. Vincent, I. Furno
Summary: The RAID system at the Swiss Plasma Center aims to study the production of negative ions in the plasma volume for neutral beam injection in post-DEMO-like reactors. It operates with a resonant birdcage antenna excited at 13.56 MHz, generating helicon driven plasma beams. A second source and additional coil are added to improve the plasma parameters' symmetry and homogeneity.
FUSION ENGINEERING AND DESIGN
(2023)
Article
Physics, Fluids & Plasmas
N. Sharma, D. Dutta, M. Chakraborty, A. Mukherjee, N. K. Neog, M. Bandyopadhyay
Summary: In this study, different plasma parameters in the Helicon Plasma Source (HeliPS) are measured and compared using experimental and numerical methods. The results show that the introduction of an electromagnet and a magnetic cage can effectively reduce the radial loss of plasma in the source and expansion chambers.
PHYSICS OF PLASMAS
(2022)
Article
Chemistry, Physical
Wen-Ting Guo, Si-Jia Zhao, Shi-Wei Jing, Yu-Lai Zheng
Summary: The study found that alloying and protective coating can effectively improve the defects of pure titanium target, enhancing the stability and lifespan of neutron tube. Experimental and calculated results show that scandium-titanium alloy is a suitable choice for the target film material of the neutron tube.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Physics, Fluids & Plasmas
Guanghui Zhu, Qing Li, Jiangshan Zheng, Jiacheng Ying, Rongsheng Wang, Quanming Lu, Xin Zhao, Shaodong Song, Minsheng Liu, Xuan Sun
Summary: The study by Ci et al. (2021) investigated the impact of phased antenna systems on plasma density variation with axial wavenumber. They found that density peaks were observed in all three antenna configurations in low magnetic fields, regardless of whether the Landau damping frequency was higher than the collision frequency. These adjustments may provide a novel operation mode for helicon applications.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Biology
Sergey Taskaev, Evgenii Berendeev, Marina Bikchurina, Timofey Bykov, Dmitrii Kasatov, Iaroslav Kolesnikov, Alexey Koshkarev, Aleksandr Makarov, Georgii Ostreinov, Vyacheslav Porosev, Sergey Savinov, Ivan Shchudlo, Evgeniia Sokolova, Igor Sorokin, Tatiana Sycheva, Gleb Verkhovod
Summary: A compact neutron source has been proposed and created at the Budker Institute of Nuclear Physics in Novosibirsk, Russia, capable of producing high neutron flux for boron neutron capture therapy. Several scientific research activities, including BNCT technique testing and dosimetry method development, have been conducted at the facility. Future plans include certification of the neutron source and clinical trials, with the prototype serving as a basis for a facility in Xiamen (China).
Article
Physics, Fluids & Plasmas
J. F. Caneses Marin, C. J. Beers, S. Chakraborty Thakur, M. J. Simmonds, R. H. Goulding, C. Lau, J. B. O. Caughman, T. M. Biewer, S. Meitner, J. Rapp, George Tynan
Summary: The upgraded light-ion helicon plasma source in the Proto-MPEX linear plasma device allows for pulsed operation at up to 200 kW. This study focuses on reporting plasma-induced surface heat fluxes on the helicon window during high power operation and provides insights for the design of the upcoming material plasma exposure eXperiment (MPEX).
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Fluids & Plasmas
Zun Zhang, Zhe Zhang, Haibin Tang, Jiting Ouyang
Summary: This paper investigated the ionization and acceleration processes of plasma using an optical emission spectroscope, revealing the impact of input power and discharge tube diameter on the growth rates of low-energy and high-energy electrons. It was found that the intensities of ionic and neutral lines varied with different RF powers and tube diameters, with the growth rate of the ionic population being higher, particularly for smaller tube diameters and higher input powers. The transition from inductively coupled (H) mode to helicon (W) mode caused distinct intensity jumps in low-energy and high-energy electrons, highlighting the importance of carefully considering the determination of W mode.
PLASMA SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Fluids & Plasmas
Zhenyu Yang, Wei Fan, Jianguo Wei, Xianwei Han
Summary: In this work, a multi-component, two-dimensional, axisymmetric fluid model coupled with an electromagnetic field was developed to simulate helicon discharge, and the effects of discharge mode, plasma density, ionization rate, and background magnetic field on discharge were investigated.
PLASMA SCIENCE & TECHNOLOGY
(2022)
Article
Instruments & Instrumentation
Xiaohua Zhou, Jie Lu, Yang Liu, Xiaoping Ouyang
Summary: In this study, a theoretical model was proposed to investigate the maximal yield of D-D and D-T neutron tubes. A concise method was presented to calculate the ion species fraction of the target current. Experimental results showed good agreement between calculated values and experimental values obtained by mass spectrometry in other works.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Physics, Fluids & Plasmas
S. Chakraborty Thakur, M. Paul, E. M. Hollmann, E. Lister, E. E. Scime, S. Sadhu, T. E. Steinberger, G. R. Tynan
Summary: RF driven helicon plasma sources are able to produce high-density argon plasmas at relatively low powers, with low electron and ion temperatures. A newly designed helicon antenna assembly can operate stably at high powers, contributing to research on various properties of argon plasmas.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Wu Kang, Liu XingYu, Yang Xu, Liu ChangQi, Huo DongYing, Bai XiaoHou, Han Chao, Jiang QiaoYue, Zhang Hang, Peng JinQiu, Zhang Yu, Wang JunRun, Yao ZeEn, Wei Zheng
Summary: The developed system utilizes a compact D-D neutron generator to detect U-235 enrichment uniformity in nuclear fuel rods by measuring gamma-rays and establishing a relationship between gamma-ray count rate and U-235 enrichment. It provides a confidence probability of 99.99% for a relative U-235 enrichment deviation of 10%, with detection accuracy increasing with neutron yield. This system can meet quality control requirements for nuclear fuel production, promoting the safe development of nuclear power.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Physics, Fluids & Plasmas
H. X. Deng, R. Sha, L. X. Hu, X. R. Jiang, N. Zhao, D. B. Zou, T. P. Yu, F. Q. Shao
Summary: Neutron detection technology is a powerful method for studying fundamental and industrial materials. A compact pulsed neutron source is desired to replace traditional large-scale accelerators or fission reactors. By using a laser interacting with a special target, a high-yield pulsed neutron source can be generated and realized in laboratory settings.
PLASMA PHYSICS AND CONTROLLED FUSION
(2022)
Article
Physics, Multidisciplinary
Joo-Hee Oh, Nam-Suk Jung, Hee-Seock Lee, Seung-Kook Ko
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2016)
Article
Instruments & Instrumentation
Leila Mokhtari Oranj, Nam-Suk Jung, Joo-Hee Oh, Hee-Seock Lee
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2016)
Article
Optics
Heung-Sik Kang, Chang-Ki Min, Hoon Heo, Changbum Kim, Haeryong Yang, Gyujin Kim, Inhyuk Nam, Soung Youl Baek, Hyo-Jin Choi, Geonyeong Mun, Byoung Ryul Park, Young Jin Suh, Dong Cheol Shin, Jinyul Hu, Juho Hong, Seonghoon Jung, Sang-Hee Kim, KwangHoon Kim, Donghyun Na, Soung Soo Park, Yong Jung Park, Jang-Hui Han, Young Gyu Jung, Seong Hun Jeong, Hong Gi Lee, Sangbong Lee, Sojeong Lee, Woul-Woo Lee, Bonggi Oh, Hyung Suck Suh, Yong Woon Parc, Sung-Ju Park, Min Ho Kim, Nam-Suk Jung, Young-Chan Kim, Mong-Soo Lee, Bong-Ho Lee, Chi-Won Sung, Ik-Su Mok, Jung-Moo Yang, Chae-Soon Lee, Hocheol Shin, Ji Hwa Kim, Yongsam Kim, Jae Hyuk Lee, Sang-Youn Park, Jangwoo Kim, Jaeku Park, Intae Eom, Seungyu Rah, Sunam Kim, Ki Hyun Nam, Jaehyun Park, Jaehun Park, Sangsoo Kim, Soonam Kwon, Sang Han Park, Kyung Sook Kim, Hyojung Hyun, Seung Nam Kim, Seonghan Kim, Sun-min Hwang, Myong Jin Kim, Chae-yong Lim, Chung-Jong Yu, Bong-Soo Kim, Tai-Hee Kang, Kwang-Woo Kim, Seung-Hwan Kim, Hee-Seock Lee, Heung-Soo Lee, Ki-Hyeon Park, Tae-Yeong Koo, Dong-Eon Kim, In Soo Ko
Article
Chemistry, Multidisciplinary
In Soo Ko, Heung-Sik Kang, Hoon Heo, Changbum Kim, Gyujin Kim, Chang-Ki Min, Haeryong Yang, Soung Youl Baek, Hyo-Jin Choi, Geonyeong Mun, Byoung Ryul Park, Young Jin Suh, Dong Cheol Shin, Jinyul Hu, Juho Hong, Seonghoon Jung, Sang-Hee Kim, KwangHoon Kim, Donghyun Na, Soung Soo Park, Yong Jung Park, Young Gyu Jung, Seong Hun Jeong, Hong Gi Lee, Sangbong Lee, Sojeong Lee, Bonggi Oh, Hyung Suck Suh, Jang-Hui Han, Min Ho Kim, Nam-Suk Jung, Young-Chan Kim, Mong-Soo Lee, Bong-Ho Lee, Chi-Won Sung, Ik-Su Mok, Jung-Moo Yang, Yong Woon Parc, Woul-Woo Lee, Chae-Soon Lee, Hocheol Shin, Ji Hwa Kim, Yongsam Kim, Jae Hyuk Lee, Sang-Youn Park, Jangwoo Kim, Jaeku Park, Intae Eom, Seungyu Rah, Sunam Kim, Ki Hyun Nam, Jaehyun Park, Jaehun Park, Sangsoo Kim, Soonnam Kwon, Ran An, Sang Han Park, Kyung Sook Kim, Hyojung Hyun, Seung Nam Kim, Seonghan Kim, Chung-Jong Yu, Bong-Soo Kim, Tai-Hee Kang, Kwang-Woo Kim, Seung-Hwan Kim, Hee-Seock Lee, Heung-Soo Lee, Ki-Hyeon Park, Tae-Yeong Koo, Dong-Eon Kim, Ki Bong Lee
APPLIED SCIENCES-BASEL
(2017)
Article
Physics, Multidisciplinary
Nam-Suk Jung, Min Ho Kim, Oryun Bae, Hee Hoon Kim, Hyeon Jae Lee, Hee-Seock Lee
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2018)
Article
Instruments & Instrumentation
Leila Mokhtari Oranj, Mahdi Bakhtiari, Yong-Uk Kye, Nam-Suk Jung, Arim Lee, Hee-Seock Lee
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2020)
Article
Chemistry, Physical
Mahdi Bakhtiari, Leila Mokhtari Oranj, Nam-Suk Jung, Arim Lee, Hee-Seock Lee
RADIATION PHYSICS AND CHEMISTRY
(2020)
Article
Chemistry, Analytical
Nam-Suk Jung, Min-Ho Kim, Hee-Hoon Kim, Dong Cheol Shin, Gyujin Kim, Hee-Seock Lee
Summary: A beam loss monitor using a long optical fiber has been developed for radiation protection in PAL-XFEL. The monitor has a position resolution of 150 m and its applicability is evaluated by comparing signal amplitudes with doses. A method is proposed to interlock accelerator operation by monitoring beam loss and applying trip thresholds at specific locations to ensure safety in the experimental area.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Environmental Sciences
Nam-Suk Jung, Hee-Seock Lee, Arim Lee, Sang Eun Han
Summary: Large accelerator facilities and particle accelerators have been built in Korea for scientific research and radiotherapy, with regulatory criteria applied to different types of facilities based on radiological risk. This study proposes using new criteria to classify large accelerator facilities and suggests a two-step licensing procedure for accelerator operation, which may lead to changes in the Korean Nuclear Safety Act. The review process for the revision of the Nuclear Safety Act is currently ongoing and will incorporate the results of this study.
JOURNAL OF RADIOLOGICAL PROTECTION
(2021)
Article
Physics, Nuclear
M. Bakhtiari, L. Mokhtari Oranj, N. S. Jung, H. S. Lee
Summary: Production cross sections for various reactions were measured using a stacked-foil technique in the proton energy range of 58-100 MeV. Theoretical calculations showed good agreement with measured cross section shapes but not magnitudes, indicating the importance of pre-equilibrium mechanism in cross section calculations.
Article
Nuclear Science & Technology
Mahdi Bakhtiari, Leila Mokhtari Oranj, Nam-Suk Jung, Arim Lee, Hee-Seock Lee
JOURNAL OF RADIATION PROTECTION AND RESEARCH
(2020)
Article
Physics, Nuclear
L. Mokhtari Oranj, M. Bakhtiari, N. S. Jung, A. Lee, H. S. Lee
Proceedings Paper
Nuclear Science & Technology
A. Lee, N. S. Jung, L. Mokhtari Oranj, H. S. Lee
4TH INTERNATIONAL WORKSHOP ON ACCELERATOR RADIATION INDUCED ACTIVATION (ARIA 2017)
(2018)
Proceedings Paper
Nuclear Science & Technology
Hee-Seock Lee, Joo-Hee Oh, Nam-Suk Jung, Leila Mokhtari Oranj, Noriaki Nakao, Yoshitomo Uwamino
ICRS-13 & RPSD-2016, 13TH INTERNATIONAL CONFERENCE ON RADIATION SHIELDING & 19TH TOPICAL MEETING OF THE RADIATION PROTECTION AND SHIELDING DIVISION OF THE AMERICAN NUCLEAR SOCIETY - 2016
(2017)
Article
Physics, Nuclear
L. Mokhtari Oranj, N. S. Jung, M. Bakhtiari, A. Lee, H. S. Lee
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)
