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Utilization mechanism of foam flooding and distribution situation of residual oil in fractured-vuggy carbonate reservoirs

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Petroleum Science 2023年第3期20卷 1620-1639页

作者： yu-Chen wen Ji-Rui Hou Xiao-li Xiao Chang-Ming li Ming Qu Ya-jie Zhao wei-Xin Zhong Tuo liang wei-peng wu Research Institute of Unconventional Petroleum Science and Technology China University of Petroleum(Beijing)Beijing102249China Key Laboratory of Petroleum Engineering China University of Petroleum(Bejing)Bejing102249China

The development of fractured-vuggy carbonate reservoirs is extremely difficult because of the complex fractured-vuggy structure and strong *** flooding is a potential enhanced oil recovery(EOR)technology in fractured-vuggy carbonate *** on the similarity criterion,three types of 2D visual physical models of the fractured-vuggy structure were made by laser ablation technique,and a 3D visual physical model of the fractured-vuggy reservoir was made by 3D printing *** the physical analog experiments of foam flooding were carried out in these *** experimental results show that foam can effectively improve the mobility ratio,control the flow velocity of the fluid in different directions,and sweep complex fracture *** effect of foam flooding in fractures can be improved by increasing foam strength and enhancing foam *** effect of foam flooding in vugs can be improved by reducing the density of the foam and the interfacial tension between foam and *** types of microscopic residual oil and three types of macroscopic residual oil can be displaced by foam *** study verifies the EOR of foam flooding in the fractured-vuggy reservoir and provides theoretical support for the application of foam flooding in fractured-vuggy reservoirs.

关键词： Fractured-vuggy reservoirs Foam flooding Physical model Residual oil Enhanced oil recovery(EOR)

Long-term follow-up results of testicular torsion in children

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Asian Journal of Andrology 2022年第6期24卷 653-659页

作者： Cheng-Jun yu jie Zhao Jin Luo Yi-Fan hong tian-Xin Zhao Sheng wen li Jiang Tao lin Da-wei He Guang-Hui wei Sheng-De wu Department of Urology Children's Hospital of Chongqing Medical UniversityChongqing 400014China Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering Chongqing 400014China National Clinical Research Center for Child Health and Disorders Chongqing 400014China China International Science and Technology Cooperation Base of Child Development and Critical Disorders Chongqing 400014China Chongqing Key Laboratory of Pediatrics Chongqing Chongqing 400014China Ministry of Education Key Laboratory of Child Development and Disorders Chongqing 400014China Department of Pediatric Urology Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510620China Department of Urology The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China

December 2020 to investigate the long-term follow-up results after testicular torsion(TT)in *** with TT were divided into the salvage orchiopexy group and the orchiectomy group,and the baseline characteristics,ultrasonographic indications,intraoperative findings,testicular volumes,and adverse events during follow-up were compared.A total of 145 cases were included in this *** 56.6%of patients who underwent salvage orchiopexy had testicular atrophy(TA),and the median testicular volume loss of the testes was 57.4%.Age less than 6 years,delayed surgery,and intraoperative poor blood supply were associated with TA in pediatric TT after *** atrophied testes appeared within 3-6 months after *** with the corresponding age-matched healthy controls,the contralateral testicular volumes were larger in the orchiopexy(P=0.o01 without TA,and P=0.042 with TA)and orchiectomy groups(P=0.033).The adverse events were comparable in patients with orchiectomy or *** summary,follow-up before 3 months after surgery may not offer sufficient clinical value,while that 3 months after surgery should be regarded as the first follow-up time for testicular *** contralateral testes of patients with TT showed compensatory *** suggest performing orchiectomy when torsed testes are surgically assessed as Arda gradeⅢor inviable.

关键词： long-term orchiectomy pediatrics salvage orchiopexy testicular torsion

Reference values of gait parameters in healthy Chinese university students: A cross-sectional observational study

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World Journal of Clinical Cases 2023年第29期11卷 7061-7074页

作者： Jin-Sheng yu Chen Zhuang wen-Xuan Guo Jun-jie Chen Xiang-Ke wu wei Xie Xing zhou Hui Su Yi-Xuan Chen li-Kang Wang wen-Kai li Kun tian Ru-jie Zhuang The First School of Clinical Medicine Zhejiang Chinese Medical UniversityHangzhou 310053Zhejiang ProvinceChina Department of Orthopedics The First Affiliated Hospital of Zhejiang Chinese Medical UniversityZhejiang Provincial Hospital of Traditional Chinese MedicineHangzhou 310003Zhejiang ProvinceChina Alberta Institute Wenzhou Medical UniversityWenzhou 325035Zhejiang ProvinceChina

BACKGROUND Gait is influenced by race,age,and diseases *** values for gait are closely related to numerous health *** gain a comprehensive understanding of gait patterns,particularly in relation to race-related pathologies and disorders,it is crucial to establish reference values for gait in daily life considering sex and ***,our objective was to present sex and age-based reference values for gait in daily life,providing a valuable foundation for further research and clinical *** To establish reference values for lower extremity joint kinematics and kinetics during gait in asymptomatic adult women and *** Spatiotemporal,kinematics and kinetics parameters were measured in 171 healthy adults(70 males and 101 females)using the computer-aided soft tissue foot *** curve statistical parametric mapping was performed using independent and paired-samples *** Compared with females,males required more time(cycle time,double-limb support time,stance time,swing time,and stride time),and the differences were statistically *** addition,the step and stride lengths of males were *** to males,female cadence was faster,and statures-per-second and stride-per-minute were *** were no statistical differences in speed and stride width between the two *** adjusting for height,it was observed that women walked significantly faster than men,and they also had a higher ***,in terms of step length,stride length,and stride width,both genders exhibited *** We established reference values for gait speed and spatiotemporal gait parameters in Chinese university *** contributes to a valuable database for gait assessment and evaluation of preventive or rehabilitative programs.

关键词： Gait analysis Gait Reference values Spatiotemporal parameters Kinematics Chinese

Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： Zhi-zhou Ren Yi-wei Yang Yong-Hao Chen Rong liu Bang-Jiao Ye jie wen Hai-Rui Guo Zi-jie Han Qi-ping Chen Zhong-wei wen wei-li Sun Han Yi Xing-Yan liu Tao Ye Jiang-Bo Bai Qi An jie Bao yu Bao ping Cao Hao-Lei Chen Zhen Chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao Xiao-Long Gao Min-Hao Gu Chang-Cai Han Guo-Zhu He Yong-Cheng He Yang hong Yi-wei Hu Han-Xiong Huang Xi-Ru Huang Hao-yu Jiang wei Jiang Zhi-jie Jiang Han-Tao Jing ling Kang Bo li Chao li Jia-wen li Qiang li Xiao li Yang li jie liu Shu-Bin liu Ze Long Guang-yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi jie Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-Xin Tan Jing-yu Tang Xin-Yi Tang Bin-Bin tian li-Jiao Wang peng-Cheng Wang Zhao-Hui Wang Xiao-Guang wu Xuan wu li-Kun Xie Xiao-yun Yang li yu Tao yu Yong-Ji yu Guo-Hui Zhang lin-Hao Zhang Qi-wei Zhang Xian-peng Zhang yu-liang Zhang Zhi-Yong Zhang Lu-ping zhou Zhi-Hao zhou Ke-Jun Zhu Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

The Melastoma dodecandrum genome and the evolution of Myrtales

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Journal of Genetics and Genomics 2022年第2期49卷 120-131页

作者： Yang Hao yu-Zhen zhou Bin Chen Gui-Zhen Chen Zhen-ying wen Diyang Zhang wei-hong Sun Ding-Kun liu jie Huang Jin-liao Chen Xiao-Qin zhou Wan-lin Fan wen-Chun Zhang lin Luo wen-Chao Han Yan Zheng Long li peng-Cheng Lu yue Xing Shu-Ya liu Jia-Ting Sun ying-Hui Cao Yan-ping Zhang Xiao-ling Shi Sha-Sha wu Ye Ai Jun-wen Zhai Si-Ren Lan Zhong-Jian liu Dong-Hui peng Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture Fujian Agriculture and Forestry UniversityFuzhou 350002China Innovation and Application Engineering Technology Research Center of Ornamental Plant Germplasm Resources in Fujian Province Fuzhou 350002China

Melastomataceae has abundant morphological diversity with high economic and ornamental merit in Myrtales. The phylogenetic position of Myrtales is still contested. Here, we report the chromosome-level genome assembly of Melastoma dodecandrum in Melastomataceae. The assembled genome size is299.81 Mb with a contig N50 value of 3.00 Mb. Genome evolution analysis indicated that M. dodecandrum,Eucalyptus grandis, and Punica granatum were clustered into a clade of Myrtales and formed a sister group with the ancestor of fabids and malvids. We found that M. dodecandrum experienced four whole-genome polyploidization events: the ancient event was shared with most eudicots, one event was shared with Myrtales, and the other two events were unique to M. dodecandrum. Moreover, we identified MADS-box genes and found that the AP1-like genes expanded, and AP3-like genes might have undergone subfunctionalization. The SUAR63-like genes and AG-like genes showed different expression patterns in stamens, which may be associated with heteranthery. In addition, we found that LAZY1-like genes were involved in the negative regulation of stem branching development, which may be related to its creeping features. Our study sheds new light on the evolution of Melastomataceae and Myrtales, which provides a comprehensive genetic resource for future research.

关键词： Melastoma Genome evolution Flower development Heteranthery Flower color Creeping stem

Differentially Expressed Genes of Soybean During Infection by Phytophthora sojae

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Journal of Integrative Agriculture 2012年第3期11卷 368-377页

作者： XU peng-fei wu Jun-jiang Allen Xue li wen-bin CHEN wei-yuan wei Lai LV Hui-ying liN Shi-feng FAN Su-jie li Ning-hui WANG Xin JIANG liang-yu ZHANG Shu-zhen Key Laboratory of Soybean Biology Ministry of Education/Soybean Research InstituteNortheast Agricultural UniversityHarbin 150030P.R.China Soybean Research Institute Heilongjiang Academy of Agricultural SciencesHarbin 150086P.R.China Eastern Cereal and Oilseed Research Centre Agriculture and Agri-Food CanadaOntario K1A 0C6Canada Suihua Research Institute Heilongjiang Academy of Agricultural SciencesSuihua 152052P.R.China Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101P.R.China College of Agriculture and Biotechnology China Agricultural UniversityBeijing 100193P.R.China

To elucidate the differential gene expression patterns in soybeans during infection by Phytophthora sojae,a cDNA library for suppression subtractive hybridization （SSH） was constructed with cDNAs from soybean cultivar Suinong 10 treated with sterile distilled water as the driver and cDNAs from Suinong 10 inoculated with *** as the tester.A total of 2 067 recombinant colonies from the SSH library were randomly picked,amplified,and *** discarding 312 poor quality expressed sequence tags （EST）,1 755 high quality ESTs were assembled and edited to 1 384 tentatively unique genes （TUG）,in which,586 showed significant homology to known sequences,and 798 had low homology or no match with the known sequences.A cDNA microarray containing 307 singletons from the 586 TUGs and 222 singletons from the 798 TUGs was developed to characterize differentially expressed cDNAs in the SSH library,and eight cDNAs were identified to be up-regulated after microarray analysis and then confirmed by real-time *** were homologous to the protein 10,and were also related to some proteins in disease resistance response,such as pathogen-related protein,phenylalanine ammonia-lyase,isoflavone reductase,WRKY transcription factor 31,major allergen Pru ar 1,and pleiotropic drug resistance protein *** of the up-regulated cDNAs encode enzymes of phytoalexin biosynthesis and pathogenesis-related proteins involved in plant disease ***,we fist reported the Pru ar 1 in *** findings of this research have contributed to better understanding of soybean resistance to *** at the molecular level.

关键词： cDNA microarray Glycine max Phytophthora sojae soybean suppressed subtraction hybridization

In-beam gamma rays of CSNS Back-n characterized by black resonance filter

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Nuclear Science and Techniques 2024年第10期35卷 149-160页

作者： Jin-Cheng Wang jie Ren wei Jiang Xi-Chao Ruan ying-Yi liu Hao-Lan Yang Kuo-Zhi Xu Xin-Yi Pan Qi Sun jie Bao Han-Xiong Huang Hao-Fan Bai Jiang-Bo Bai ping Cao Qi-ping Chen Yong-Hao Chen wen-Hao Duan An-Chuan Fan Rui-Rui Fan Chang-Qing Feng Min-Hao Gu Chang-Cai Han Zi-jie Han Guo-Zhu He Yong-Cheng He Yang hong Yi-wei Hu Zhi-jie Jiang ling Kang Chang-lin Lan Bo li Feng li Qiang li Xiao li Yang li jie liu Rong liu Shu-Bin liu Yi-Na liu Guang-yuan Luan Chang-Jun Ning Yi-Jia Qiu wen-Kai Ren Zhi-zhou Ren Zhao-Hui Song Kang Sun Zhi-Xin Tan Jing-yu Tang Sheng-Da Tang li-Jiao Wang peng-Cheng Wang Zhao-Hui Wang Zhong-wei wen Xiao-Guang wu Xuan wu Ze-peng wu Cong Xia li-Kun Xie Han Yi Tao yu Yong-Ji yu Guo-Hui Zhang Hang-Chang Zhang Qi-wei Zhang Xian-peng Zhang yu-liang Zhang Zhi-Yong Zhang Mao-yuan Zhao Zhi-Hao zhou Ke-Jun Zhu Chong Zou Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Advanced Technology University of Science and Technology of ChinaHefei 230027China

The back-streaming white-neutron beamline(Back-n)of the China Spallation Neutron Source is an essential neutronresearch platform built for the study of nuclear data,neutron physics,and neutron *** types of cross-sectional neutron-reaction measurements have been performed at Back-n since early *** measurements have shown that a significant number of gamma rays can be transmitted to the experimental stations of Back-n along with the neutron *** gamma rays,commonly referred to as in-beam gamma rays,can induce a non-negligible experimental background in neutron-reaction *** the characteristics of in-beam gamma rays is important for understanding the experimental ***,measuring in-beam gamma rays is challenging because most gamma-ray detectors are sensitive to neutrons;thus,discriminating between neutron-induced signals and those from in-beam gamma rays is *** this study,we propose the use of the black resonance filter method and a CeBr_(3) scintillation detector to measure the characteristics of the in-beam gamma rays of *** types of black resonance filters,^(181)Ta,^(59)Co,^(nat)Ag,and^(nat)Cd,were used in this *** time-of-flight(TOF)technique was used to select the detector signals remaining in the absorption region of the TOF spectra,which were mainly induced by in-beam gamma *** energy distribution and flux of the in-beam gamma rays of Back-n were determined by analyzing the deposited energy spectra of the CeBr_(3) scintillation detector and using Monte Carlo *** on the results of this study,the background contributions from in-beam gamma rays in neutron-reaction measurements at Back-n can be reasonably evaluated,which is beneficial for enhancing both the experimental methodology and data analysis.

关键词： In-beam gamma rays Back-n CeBr_(3)scintillator Black filter resonance technique

Back-n white neutron source at CSNS and its applications

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Nuclear Science and Techniques 2021年第1期32卷 95-104页

作者： Jing-yu Tang Qi An Jiang-Bo Bai jie Bao yu Bao ping Cao Hao-Lei Chen Qi-ping Chen Yong-Hao Chen Zhen Chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao Xiao-Long Gao Min-Hao Gu Chang-Cai Han Zi-jie Han Guo-Zhu He Yong-Cheng He Yang hong Yi-wei Hu Han-Xiong Huang Xi-Ru Huang Hao-yu Jiang wei Jiang Zhi-jie Jiang Han-Tao Jing ling Kang Bo li Chao li Jia-wen li Qiang li Xiao li Yang li jie liu Rong liu Shu-Bin liu Xing-Yan liu Ze Long Guang-yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi jie Ren Zhi-zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-Xin Tan Xin-Yi Tang Bin-Bin tian li-Jiao Wang peng-Cheng Wang Zhao-Hui Wang Zhong-wei wen Xiao-Guang wu Xuan wu li-Kun Xie Xiao-yun Yang Yi-wei Yang Han Yi li yu Tao yu Yong-Ji yu Guo-Hui Zhang lin-Hao Zhang Qi-wei Zhang Xian-peng Zhang yu-liang Zhang Zhi-Yong Zhang Lu-ping zhou Zhi-Hao zhou Ke-Jun Zhu 无 State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China The CSNS Back-n Collaboration

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source(CSNS)that emit through the incoming proton channel were exploited to build a white neutron beam facility(the so-called Back-n white neutron source),which was completed in March *** Back-n neutron beam is very intense,at approximately 29107 n/cm2/s at 55 m from the target,and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the *** addition,the excellent energy spectrum spanning from 0.5 eV to 200 MeV,and a good time resolution related tothe time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the *** with advanced spectrometers,detectors,and application utilities,the Back-n facility can serve wide applications,with a focus on neutron-induced cross-sectional *** article presents an overview of the neutron beam characteristics,the experimental setups,and the ongoing applications at Backn.

关键词： White neutron source Nuclear data measurements Experimental setups Neutron applications

Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang li li‑Jiao Wang Xiang‑Biao Qiu Jing‑wen li wei Xu Tao li Ze‑Bin lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui Fan Kang Sun Jing‑yu Tang Rong Zhang Han‑Tao Jing Bo Mei Qi An Hao‑Fan Bai Jiang‑Bo Bai jie Bao ping Cao Qi‑ping Chen Zhen Chen Zeng‑Qi Cui An‑Chuan Fan Chang‑Qing Feng Fan‑Zhen Feng Ke‑Qing Gao Min‑Hao Gu Chang‑Cai Han Zi‑jie Han Guo‑Zhu He Yong‑Cheng He Yang hong Yi‑wei Hu Han‑Xiong Huang wei‑Hua Jia Hao‑yu Jiang wei Jiang Zhi‑jie Jiang Zheng‑Yao Jin ling Kang Bo li Chao li Gong li Jia‑wen li Xiao li Yang li jie liu Rong liu Shu‑Bin liu Guang‑yuan Luan Bin‑Bin Qi jie Ren Zhi‑zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Zhi‑Xin Tan Sheng‑Da Tang peng‑Cheng Wang Zhao‑Hui Wang Zhong‑wei wen Xiao‑Guang wu Xuan wu li‑Kun Xie Yi‑wei Yang Han Yi Yong‑Ji yu Guo‑Hui Zhang lin‑Hao Zhang Mo‑Han Zhang Qi‑wei Zhang Xian‑peng Zhang yu‑liang Zhang yue Zhang Zhi‑Yong Zhang Mao‑yuan Zhao Lu‑ping zhou Zhi‑Hao zhou Ke‑Jun Zhu Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons