Japanese Journal of Applied Physics最新文献_第3页

Pressure-regulated bandgap narrowing and photoelectric activity enhancement in layered halide compound GeI2 层状卤化物GeI2的调压带隙缩小和光电活性增强

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2025-02-26 DOI: 10.1063/5.0256512

Zhongyang Li, Yiming Wang, Xiaohui Zeng, Shuo Zhou, Zhikai Zhu, Kai Zhang, Kejun Bu, Chung-Kun Song, Haiyun Shu, Shuai Yan, Dongbo Wang, Wenge Yang, Gang Liu, Yanfeng Guo, Gang Liu

{"title":"Pressure-regulated bandgap narrowing and photoelectric activity enhancement in layered halide compound GeI2","authors":"Zhongyang Li, Yiming Wang, Xiaohui Zeng, Shuo Zhou, Zhikai Zhu, Kai Zhang, Kejun Bu, Chung-Kun Song, Haiyun Shu, Shuai Yan, Dongbo Wang, Wenge Yang, Gang Liu, Yanfeng Guo, Gang Liu","doi":"10.1063/5.0256512","DOIUrl":"https://doi.org/10.1063/5.0256512","url":null,"abstract":"Layered semiconductors offer distinct advantages for optoelectronically responsive heterojunction devices due to their strong light–matter interactions and weak interlayer van der Waals interactions, which enable exfoliation into adjustable thicknesses. However, their practical utility is often restricted by excessively wide bandgaps, which limit spectral response within the visible light range and reduce light absorption efficiency, thereby constraining broadband detection capabilities. In this study, pressure was employed as a tuning parameter to modulate the bandgap and optimize the photoelectric performance of the layered semiconductor GeI2. Structural stability under moderate compression (5 GPa) was confirmed through in situ Raman spectra and x-ray diffraction, with no evidence of phase transition. At 5 GPa, a remarkable five-order-of-magnitude enhancement in photoelectric activity was observed. In situ UV-visible absorption spectroscopy, supported by theoretical calculations, revealed that this enhancement is primarily driven by pressure-induced narrowing of the bandgap. These findings offer critical insights for designing two-dimensional broadband photodetectors with tailored bandgap properties and enhanced photoelectric response, contributing to advancing next-generation flexible optoelectronic devices.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"137 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/5.0256512/20413829/085902_1_5.0256512.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interface enhancement effect: SnO2/CsPbBr3 hetero-junction for improve nuclear radiation detection performance and stability 界面增强效果：SnO2/CsPbBr3异质结用于提高核辐射探测性能和稳定性

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2025-01-21 DOI: 10.1063/5.0239662

Mingzhi Zhang, Tong Zhan, Guotu Xia, C.H. Huang, Tian Fang, Wenjuan Deng, Jijun Zou, Bin Tang

{"title":"Interface enhancement effect: SnO2/CsPbBr3 hetero-junction for improve nuclear radiation detection performance and stability","authors":"Mingzhi Zhang, Tong Zhan, Guotu Xia, C.H. Huang, Tian Fang, Wenjuan Deng, Jijun Zou, Bin Tang","doi":"10.1063/5.0239662","DOIUrl":"https://doi.org/10.1063/5.0239662","url":null,"abstract":"The CsPbBr3 single crystal detector emerges as a highly promising candidate among semiconductor nuclear radiation detectors, which exhibits an extensive potential application across a multitude of critical domains, particularly in nuclear physics, nuclear energy, nuclear medicine, etc. However, the polarization problem has limited the application and development of CsPbBr3 detectors and has even posed a significant hindrance to their practical implementation. In this paper, a pre-designed SnO2/CsPbBr3 hetero-junction was meticulously engineered at the interface of the Ti/CsPbBr3/Ti detector, aiming to solve the polarization problem. This paper investigates the effects of the SnO2/CsPbBr3 hetero-junction on the electrical characteristics, detection performance, and long-term stability of the detector. The final results demonstrated that the SnO2/CsPbBr3 hetero-junction had multiple beneficial effects on the CsPbBr3 detector. On the one hand, the SnO2/CsPbBr3 hetero-junction exhibited superior electron extraction efficiency when compared to the Ti/CsPbBr3 interface. On the other hand, the SnO2 layer played a crucial role in preventing the migration of ions from the CsPbBr3 crystal to the interface, as well as in blocking the permeation of atmospheric and moisture elements from the detector surface to the interface. Consequently, the SnO2/CsPbBr3 hetero-junction detector exhibited superior detection performance and enhanced long-stability when compared to the Ti/CsPbBr3/Ti detector. After the interface enhancement, the SnO2/CsPbBr3 hetero-junction detector achieved an improved energy resolution of 13.59% at an electric field of 6000 V/cm and maintained a stable energy resolution of approximately 24 ± 5% at 3000 V/cm for over 12 h. The study of the SnO2/CsPbBr3 hetero-junction detector in this work provided a new perspective for enhancing the detection performance and ensuring the long-term stability of CsPbBr3-based detectors.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"137 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Enhanced flexoelectric properties in sodium bismuth titanate-based lead-free relaxor ferroelectrics by inducing polar nanoregions 通过诱导极性纳米区增强钛酸铋钠基无铅弛豫铁电体的挠曲电性能

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2025-01-15 DOI: 10.1063/5.0234316

Chao Yi, Zhiguo Wang, Zhenggang Rao, Chunchun Li, Longlong Shu

{"title":"Enhanced flexoelectric properties in sodium bismuth titanate-based lead-free relaxor ferroelectrics by inducing polar nanoregions","authors":"Chao Yi, Zhiguo Wang, Zhenggang Rao, Chunchun Li, Longlong Shu","doi":"10.1063/5.0234316","DOIUrl":"https://doi.org/10.1063/5.0234316","url":null,"abstract":"The presence of polar nanoregions (PNRs) is widely recognized as playing a crucial role in the functionalities of numerous solid dielectrics. However, the contribution of PNRs to the specific coupling between strain gradient and electric polarization (flexoelectricity) has not yet been thoroughly understood. Herein, we investigated the impact of varying PNR concentrations on the dielectric and flexoelectric properties of lead-free relaxor ferroelectric (Bi0.5Na0.5)TiO3 ceramics, achieved through stoichiometric BaTiO3 doping. The temperature-dependent dielectric properties indicated the presence of PNRs in doubly doped ceramics as compared to pure BNT. Complex impedance analysis and piezoresponse force microscopy measurements demonstrated significant differences in PNR concentrations among the different components. The reorientation of PNRs notably enhanced the flexoelectric response of the doubly doped BNT-xBT ceramics, with this enhancement being positively correlated with the concentration of PNR. Specifically, the flexoelectric coefficient was found to be approximately 10 times higher in the morphotropic phase boundary (MPB) region (x = 0.08) compared to pure BNT. These findings illustrate that adjusting the concentration of PNRs in lead-free relaxation ferroelectrics is an effective strategy for improving flexoelectric properties.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"137 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Resistive switching behavior of quasi-2D CsPbBr3 memristors: Impact of ambient atmosphere on logic storage and computing integration with anti-crosstalk and reconfiguration features 准二维CsPbBr3忆阻器的阻性开关行为：环境气氛对具有抗串扰和重构特性的逻辑存储和计算集成的影响

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-12-11 DOI: 10.1063/5.0220511

Mufan Zhu, Chuting Yao, Xiaofei Zhang, Song He, Baochang Cheng, Jie Zhao

{"title":"Resistive switching behavior of quasi-2D CsPbBr3 memristors: Impact of ambient atmosphere on logic storage and computing integration with anti-crosstalk and reconfiguration features","authors":"Mufan Zhu, Chuting Yao, Xiaofei Zhang, Song He, Baochang Cheng, Jie Zhao","doi":"10.1063/5.0220511","DOIUrl":"https://doi.org/10.1063/5.0220511","url":null,"abstract":"Passive units integrating storage and computing with anti-crosstalk and multi-logic reconstruction are crucial for high computing power and high-density non-volatile storage. In this study, we report an anti-crosstalk and reconfigurable logic memory based on a single passive quasi-two-dimensional (2D) CsPbBr3 device. The effect of the ambient atmosphere (air and N2 environments) on the resistive behavior of the memristors is explored. In air, these devices exhibit negative differential resistance (NDR) effects and antipolar resistive switching behavior, while in N2, they display irreversible switching from low-resistance state to high-resistance state. Various active electrodes (Ag, Cu, Au, and C) were employed to investigate this phenomenon. It is proposed that in air, O ions interact with surface defects under high alternating voltage, retaining a significant quantity of Br− ions within the quasi-2D CsPbBr3, resulting in capacitive-like behavior. Conversely, in N2, surface defects capture Br− ions, leading to the absence of a hysteresis loop in the I-V characteristic. Under N2 operation, write-once-read-many (WORM) capability is achieved. Surprisingly, operating under air enables integrated non-volatile storage and computing, facilitating 12 reconfigurable logic operations in a passive 1R structure and suppressing sneak current in crosstalk setups. This study emphasizes the pivotal role of air in the resistive switching mechanism and provides novel insights for developing next-generation memories tailored for high-density integrated circuits and storage-computing integration.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"136 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/5.0220511/20294369/225501_1_5.0220511.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Preparation of temperature-stable 0.8MgTiO3–0.2Mg2SiO4–0.06CaTiO3 microwave dielectric ceramics for unilateral radiating dielectric resonator antenna without ground plane 制备温度稳定的0.8MgTiO3-0.2Mg2SiO4-0.06CaTiO3微波介质陶瓷，用于单侧辐射无接地面介质谐振器天线

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-12-03 DOI: 10.1063/5.0243097

Chao Du, Zhiji Wang, Hetuo Chen, Guohong Zhou, Shaofei Wang, Song Xia, Di Zhou

{"title":"Preparation of temperature-stable 0.8MgTiO3–0.2Mg2SiO4–0.06CaTiO3 microwave dielectric ceramics for unilateral radiating dielectric resonator antenna without ground plane","authors":"Chao Du, Zhiji Wang, Hetuo Chen, Guohong Zhou, Shaofei Wang, Song Xia, Di Zhou","doi":"10.1063/5.0243097","DOIUrl":"https://doi.org/10.1063/5.0243097","url":null,"abstract":"Unilateral radiating antennas are widely studied due to their ability to provide lateral or unidirectional radiation patterns, which are especially suitable for indoor and office Wi-Fi router applications. In this letter, a unilateral radiating rectangular dielectric resonator antenna (DRA) without a ground plane is proposed. A temperature stable low-loss 0.8MgTiO3–0.2Mg2SiO4–0.06CaTiO3 (MT–MS–CT) composite ceramic prepared via solid-state reaction and sintered at 1380 °C is utilized for the proposed DRA. Notably, the MT–MS–CT composite ceramic shows good dielectric performance with a permittivity of εr∼13, a quality factor of Q×f0∼115,000, Q = 1/dielectric loss, f0 = 8.6 GHz, and a temperature coefficient of resonant frequency TCF∼+4.6ppm/°C. Its unilateral radiation pattern is based on the complementary magnetic dipole and electric dipole, where the excited dominant TE111 mode of the rectangular DRA serves as the magnetic dipole and a probe acts as an electric dipole. The proposed prototype antenna fabricated using the composite ceramic has a unilateral radiation pattern with wide impedance bandwidth, reasonable gain, and radiation efficiency of 95%.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"136 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147886495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Dual efficacy of potassium-doping in perovskite solar cells: Reducing hysteresis and boosting open-circuit voltage 钙钛矿太阳能电池中钾掺杂的双重功效：减少迟滞和提高开路电压

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-10-23 DOI: 10.1063/5.0228415

Weijie Li, Ting Liu, Guanwen Chen, Ning Li, Xia Wang, Zongming Liu, Bingqiang Cao

{"title":"Dual efficacy of potassium-doping in perovskite solar cells: Reducing hysteresis and boosting open-circuit voltage","authors":"Weijie Li, Ting Liu, Guanwen Chen, Ning Li, Xia Wang, Zongming Liu, Bingqiang Cao","doi":"10.1063/5.0228415","DOIUrl":"https://doi.org/10.1063/5.0228415","url":null,"abstract":"The incorporation of potassium into perovskite solar cells (PSCs) has been empirically validated to mitigate hysteresis phenomena and boost the power conversion efficiency (PCE). However, the doping mechanism of potassium ions in the perovskite film and their effect on photocarrier recombination remains a topic of debate. Here, we grew doped MAPbI3: K single crystals by inverse temperature crystallization using KI as a dopant, and then perovskite thin films were spin-coated with dissolved MAPbI3: K crystals as a precursor. The doped MAPbI3: K perovskite films exhibit better crystal quality with large columnar grains and lower defect density. Employing Hall effect, ultraviolet photoelectron spectroscopy, and Kelvin probe force microscopy measurements, we definitively demonstrate that K-doping transforms the conductivity type of the perovskite film from a marginally N-type to a distinct P-type semiconductor. Furthermore, this doping strategy induces a concurrent downward shift in both the conduction band minimum and valence band maximum. As a result, the PCE of the PSCs increases from 15.15% to an impressive 20.66%, and the J–V curve hysteresis almost disappears. Additionally, theoretical simulations using SCAPS-1D software reveal a profound modification in the device's energy band diagram after K+-doping. Specifically, the energy level offset between the perovskite layer and the electron transport layer diminishes from 0.24 to 0.14 eV, with a result of bigger quasi-Fermi energy level splitting. This, in turn, elevates the open-circuit voltage (Voc) of the doped perovskite solar cell, underscoring the profound impact of potassium doping on enhancing PSC performance.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"136 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/5.0228415/20221107/165702_1_5.0228415.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147922612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Radiative heat transfer to enhance the performance of liquid metal-based phase change heat sink under natural convection condition 自然对流条件下通过辐射换热提高液态金属基相变散热器性能

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-10-16 DOI: 10.1063/5.0221245

Wei Li, Yuqing Li, Yuchen Yao, Yue Ren, Wendi Bao, Yong Li, Jing Liu, Zhong‐Shan Deng

{"title":"Radiative heat transfer to enhance the performance of liquid metal-based phase change heat sink under natural convection condition","authors":"Wei Li, Yuqing Li, Yuchen Yao, Yue Ren, Wendi Bao, Yong Li, Jing Liu, Zhong‐Shan Deng","doi":"10.1063/5.0221245","DOIUrl":"https://doi.org/10.1063/5.0221245","url":null,"abstract":"Liquid metal phase change materials have the advantages of high thermal conductivity and high volumetric latent heat, which are expected to address the growing challenges of thermal management of advanced electronics. In previous studies, the effect of radiative heat transfer from fins of a phase change heat sink on thermal management performance has rarely been considered. In this study, radiative coating materials with high emissivity were prepared and coated on the fins of the liquid metal phase change heat sink. The effect of radiative heat transfer on the performance of liquid metal phase change heat sink was investigated. The experimental results of continuous heating under natural convection conditions show that the introduction of the radiative coating with an emissivity of 0.9298 can extend the time for the surface temperature of the heat source to reach 100 °C by 9.4%, while shortening the recovery time of the phase change heat sink by 14.9%. The results of high-power cyclic heating indicate that the high emissivity coating can reduce the peak temperature by 16.6 °C in the tenth working cycle. A simplified numerical model was subsequently developed and validated to determine the specific effects of phase change and radiative heat transfer on the overall thermal control performance. The radiation-enhanced liquid metal phase change heat sink proposed in this study is simple and maintenance-free. It is expected to address the thermal management issues of electronic devices that cannot use active cooling or operate in thin-air environments.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"136 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Modulation of the vibrational and optical properties in β copper phthalocyanine under compression 压缩条件下β酞菁铜的振动和光学性质的调制

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-10-15 DOI: 10.1063/5.0227217

Miaomiao Du, Shengyi Wang, Shengchun Fu, Junkai Zhang

{"title":"Modulation of the vibrational and optical properties in <i>β</i> copper phthalocyanine under compression","authors":"Miaomiao Du, Shengyi Wang, Shengchun Fu, Junkai Zhang","doi":"10.1063/5.0227217","DOIUrl":"https://doi.org/10.1063/5.0227217","url":null,"abstract":"Because copper phthalocyanine (CuPc) has significant uses in industrial devices and pigments, it is a subject of great interest in basic scientific research. Studying and adjusting its photoelectric qualities, in particular, has drawn much attention. In this work, in situ high-pressure experiments were used to investigate in detail the vibrational and optical properties of ground-state β-CuPc up to 13 GPa. Both micro-Raman and ultraviolet and visible light (UV–vis) absorption measurements revealed a phase transition occurring around 3 GPa. Notably, the macrocycle breathing vibration was found to have a remarkable characteristic of first weakening and then strengthening in response to this pressure-induced phase transition. The UV–vis absorption data revealed that the bandgaps corresponding to the two absorption edges decrease gradually with increasing pressure, with one edge disappearing entirely above 11 GPa. Furthermore, the blue β-CuPc can be adjusted to dark green at 10 GPa and ultimately entirely black due to the merging of its absorption bands and redshifts at high pressure. This work improves our understanding of CuPc's intrinsic characteristics under harsh settings and manipulates its color effectively.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"136 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/5.0227217/20209581/155901_1_5.0227217.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Full-scale modeling and experimental study of a gas neutron tube with a Penning ion source 彭宁离子源气体中子管全尺寸建模与实验研究

4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-10-01 DOI: 10.1063/5.0217674

А. С. Рохманенков, Н. В. Мамедов, I. A. Kanshin, С. П. Масленников, A. A. Solodovnikov

{"title":"Full-scale modeling and experimental study of a gas neutron tube with a Penning ion source","authors":"А. С. Рохманенков, Н. В. Мамедов, I. A. Kanshin, С. П. Масленников, A. A. Solodovnikov","doi":"10.1063/5.0217674","DOIUrl":"https://doi.org/10.1063/5.0217674","url":null,"abstract":"This paper studies full-scale gas neutron tube modeling, including the following processes: gas discharge combustion in a Penning ion source, particle motion in an ion optical system, and modeling the in-target processes, such as sputtering, diffusion, thermal desorption of hydrogen isotopes, and nuclear reactions. Plasma modeling in quadrupole electric and axial magnetic fields was based on the electrostatic particle-in-cell method with molecular kinetic processes. The TechX Vsim software package was used. The neutron tube element sputtering by ions was simulated using SRIM/TRIM software based on Monte–Carlo methods. The OpenFOAM, as an open integrated platform for numerical simulation in continuum mechanics, was used to calculate the hydrogen thermal desorption activated by ion irradiation. The time-dependent neutron yield modeling was performed using the Geant4 software based on Monte–Carlo methods with CHIPS-TPT VNIIA-developed library. In addition, an experimental study of a gas neutron tube with a Penning ion source was conducted here as well. Details are given on the experiment and measurement technique used in this study. The operating characteristics for the gas neutron tube, including amplitude-time characteristics of current flashes (discharge and extraction currents), were determined. The neutron flux dependencies on the discharge current at various accelerating voltages were also obtained. Finally, a comparison between the experimental and calculated results is presented.","PeriodicalId":14741,"journal":{"name":"Japanese Journal of Applied Physics","volume":"136 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Research on optical properties of Eu3+ doped bismuth silicate crystals based on first principles 基于第一原理的掺 Eu3+ 硅酸铋晶体光学特性研究

IF 1.5 4区物理与天体物理

Japanese Journal of Applied Physics Pub Date : 2024-09-18 DOI: 10.35848/1347-4065/ad7554

Xuefeng Xiao, Yan Huang, Yan Zhang, Jiashun Si, Shuaijie Liang, Qingyan Xu, Huan Zhang, Lingling Ma, Cui Yang, Xuefeng Zhang, Jiayue Xu, Tian Tian and Hui Shen

引用次数: 0