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Gas lasers preionized by pulse or cw x-ray

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中国激光 1980年第Z1期 65-65页

作者： Tsunenori Arai,Minoru Obara,tomoo fujioka Department of Electrical Engineering Keio University Department of Electrical Engineering Keio University Department of Electrical Engineering Keio University

The Hash x-ray preionizers which use strong-penetration x-ray photon to preionizehigh pressure and/or large-volume gas lasers have been already sccessfully demonstratedon KrF, CO2lasers. As a kind of x-ray generator, cw x-ray generator was generally em-ployed for industrial and medical application. This generator produce continuous ioniza-tion, then, it would be apply to the external ionizer on cw discharge and/or would beapply to the preionization source on pulsed discharge. Thus, we have used a cw x-raygenerator as a preionization source on pulsed-discharge N2, HF *** observed that the N2laser energy increased by a factor of 12 with the addition

关键词： Gas lasers preionized by pulse or cw x-ray

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脉冲或连续X射线预电离气体激光器

中国激光 1980年第Z1期 65-65页

作者： Tsunenori Arai,Minoru Obara,tomoo fujioka 日本横滨庆应大学电气工程系日本横滨庆应大学电气工程系日本横滨庆应大学电气工程系

使用有强穿透能力的X射线光子预电离的高气压、大体积气体激光器的闪光X射线预电离器已在KrF和CO2激光器中获得成功.与工业和医学中采用的连续X射线发生器一样,这类X射线发生器产生连续电离,它可用作连续放电的外部电离源,或脉冲放电的... 详细信息

使用有强穿透能力的X射线光子预电离的高气压、大体积气体激光器的闪光X射线预电离器已在KrF和CO2激光器中获得成功.与工业和医学中采用的连续X射线发生器一样,这类X射线发生器产生连续电离,它可用作连续放电的外部电离源,或脉冲放电的预电离源.我们已使用一台连续X射线发生器作为脉冲放电N2、HF激光器的预电离源.我们观察到在X射线照射情况下,掺SF6比纯N2时的N2激光能量增加12倍.为了测量预电离电子密度,进行了电离研究.当N2气压50托时,获得预电离电子密度为5×10～7厘米3.

关键词：预电离电子密度电子浓度气体激光器

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化学泵浦的碘激光器

中国激光 1983年第Z1期 589-589页

作者： Kazuhiko Serizawa Akira Otsuka Hiroshi Murata Taro Uchiyama tomoo fujioka 日本庆应大学电工系日本庆应大学电工系日本庆应大学电工系日本庆应大学电工系日本庆应大学电工系

本文给出了使用小尺寸真空泵的在低流速（2米/秒）下运转的横流化学泵浦碘激光器的性能。由化学发生器射出的气流经一个干冰乙醇吸附器,从而除去作为受激体的有效猝灭剂的水蒸气。激光器部分由一个70×2cm的管道组成,1m长的腔安装在离I... 详细信息

本文给出了使用小尺寸真空泵的在低流速（2米/秒）下运转的横流化学泵浦碘激光器的性能。由化学发生器射出的气流经一个干冰乙醇吸附器,从而除去作为受激体的有效猝灭剂的水蒸气。激光器部分由一个70×2cm的管道组成,1m长的腔安装在离I2注入点大约0.8cm的下游处,共振腔由两块反射镜组成:一块曲率半径为5米的全反射镜,另一块部分透过（T=1.5％）的平面镜。喉高为0.6cm的喷嘴放置在腔轴处,以便使分子碘和氧有效地混合。在90％（重量）H2O2,为1.1升和25％（重量）NaOH为0.5升时,采用大于40％的

关键词：碘激光器吸附器气体净化设备碘分子

Relative importance of tidal flats and artificial habitats for two spoonbill species and related interspecific differences

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Avian Research 2023年第3期14卷 317-325页

作者： Takehiko Shimizu Masayuki Senzaki Yuichiro fujioka Satoquo Seino School of Interdisciplinary Science and Innovation Kyushu UniversityMotooka 744Nishi-kuFukuoka819-0395Japan Graduate School of Environmental Science Hokkaido UniversityKita 10-jo Nishi 5-chome Kita-kuSapporoHokkaido060-0810Japan Faculty of Environmental Earth Science Hokkaido UniversityKita 10-jo Nishi 5-chome Kita-kuSapporoHokkaido060-0810Japan Faculty of Social and Cultural Studies Kyushu UniversityMotooka 744Nishi-kuFukuoka819-0395Japan Faculty of Engineering Kyushu UniversityMotooka 744Nishi-kuFukuoka819-0395Japan

Artificial/seminatural environments,such as aquacultural ponds,saltpans,and croplands,have recently been acknowledged as important habitats for coastal *** coastal waterbirds tend to use artificial habitats around tidal flats as roosting sites during high-tide,it remains unclear whether the importance of surrounding habitats relative to tidal flats varies among landscape types,seasons,species,or tidal *** Black-faced Spoonbill(Platalea minor)and Eurasian Spoonbill(***)are two closely related sympatric species in East Asia with narrow and wide distribution ranges and habitat requirements,*** therefore expect that both species will use surrounding artificial habitats across seasons at high tides,but Blackfaced Spoonbills will use them less frequently than Eurasian ***,we address these hypotheses in the Imazu tidal flat and its surrounding environments in southern *** investigated the habitat use and behavioral patterns of both species through route and behavioral surveys during the fall migration and wintering seasons in *** found that both species used surrounding habitats including artificial ones more frequently than the tidal flat regardless of the tidal condition or season,but spoonbills used these habitats more frequently in winter than in *** also found that Eurasian Spoonbills foraged in surrounding artificial habitats more frequently than Black-faced *** results not only demonstrate how coastal waterbirds exploit surrounding habitats relative to tidal flats but also suggest that the importance of surrounding habitats varies among species and *** study thus emphasizes that valuing and managing surrounding habitats in addition to tidal flats are key to conserving globally declining waterbirds.

关键词： Artificial habitat Behavior Black-faced Spoonbill Eurasian Spoonbill Habitat use Surrounding environment Species distribution model Tidal flat

维普期刊数据库

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强电子束引发的高功率HF化学激光器的研制

中国激光 1983年第Z1期 592-592页

作者： Fumihiko Kannari Shigeru Yamaguchi Kenji Kumamoto Tadashi Suzuki Minoru Obara tomoo fujioka 日本庆应大学科学技术分部电工系日本庆应大学科学技术分部电工系日本庆应大学科学技术分部电工系日本庆应大学科学技术分部电工系日本庆应大学科学技术分部电工系日本庆应大学科学技术分部电工系日本庆应大学科学技术分部电工系

强电子束是高功率激光器的一种重要的引发和激励源,由于高的引发和激励强度能均匀地激励高气压、大体积气体混合物。此外,电子束脉冲具有很快的电流上升时间,这样可以研究寿命很短的激光物质。电子束引发的HF化学激光器对应用于激光聚... 详细信息

强电子束是高功率激光器的一种重要的引发和激励源,由于高的引发和激励强度能均匀地激励高气压、大体积气体混合物。此外,电子束脉冲具有很快的电流上升时间,这样可以研究寿命很短的激光物质。电子束引发的HF化学激光器对应用于激光聚变来说是有兴趣的,引起这种兴趣的特性是由于HF化学激光器可以获得高的电效率和高的能量密度。我们已对电子束引发的HF（H2/F2）激光器作了研究,并获得了电效率为200％时180J/脉冲的HF激光能量。最近,我们已研制成几千焦耳的电子束引发的高功率HF激光系统。强电子束引

关键词：电效率激光能量化学激光器高功率

Research Activities of Nanodimensional Standards Using Atomic Force Microscopes,Transmission Electron Microscope,and Scanning Electron Microscope at the National Metrology Institute of Japan

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Nanomanufacturing and Metrology 2022年第2期5卷 83-90页

作者： Ichiko Misumi Ryosuke Kizu Hiroshi Itoh Kazuhiro Kumagai Keita Kobayashi tomoo Sigehuzi National Institute of Advanced Industrial Science and Technology AIST Tsukuba Central 51-1-1 HigashiIbaraki305-8565TsukubaJapan

With the progress in nanotechnology,the importance of nanodimensional standards is *** nanodimensional standards requires multiple types of high-precision microscopy *** National Metrology Institute of Japan(NMIJ),one of the research domains in the National Institute of Advanced Industrial Science and Technology(AIST),is developing nanodimensional standards using atomic force,transmission electron,and scanning electron *** current status of nanodimensional standards in NMIJ is introduced herein.

关键词： Nanodimensional standards Calibration Uncertainty AFM TEM SEM

Asthenosphere dynamics based on the H2O dependence of element diffusivity in olivine

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National Science Review 2021年第4期8卷 9-11页

作者： tomoo Katsura Hongzhan Fei Bayerisches Geoinstitut University of Bayreuth Center for High Pressure Science and Technology Advanced Research

The oceanic asthenosphere is one of the most enigmatic regions in the Earth’s interior. The presence of seismic lowvelocity zones implies high softness at the top of the asthenosphere, which may cause smooth plate mo... 详细信息

关键词： scanning tunneling microscopy phenyl-based molecular film electronic correlation electron-vibration coupling Kondo effect

CHINA'S 2022 ECONOMIC OUTLOOK

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China Report ASEAN 2022年第4期7卷 61-63页

作者： Marukawa tomoo the Institute of Social Science at the University of Tokyo

China is poised to achieve a milestone when it joins the ranks of high-income countries in 2022 China’s gross domestic product(GDP) exceeded 114 trillion yuan(US$18.1 trillion) in 2021, according to data released by ... 详细信息

关键词： income ranks Bureau

维普期刊数据库

Static and dynamic evaluations of acoustic positioning system using TDMA and FDMA for robots operating in a greenhouse

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International Journal of Agricultural and Biological Engineering 2022年第5期15卷 28-33页

作者： Lok Wai Jacky Tsay tomoo Shiigi Xunyue Zhao Zichen Huang Keiichiro Shiraga Tetsuhito Suzuki Yuichi Ogawa Naoshi Kondo Laboratory of Bio-Sensing Engineering Division of Environmental Science and TechnologyGraduate School of AgricultureKyoto UniversityKyoto 606-8502Japan Department of Ocean Mechanical Engineering National Fisheries UniversityShimonoseki 759-6595Japan

Acoustic positioning system has great potential to be applied in a greenhouse due to its centimeter-level accuracy,low cost,and ability of extensive greenhouse *** Spectrum Sound-based local positioning system(SSSLPS)was proposed to be a navigation tool for multiple agricultural robots by the authors'research ***,to increase the system capacity for positioning multiple robots in a greenhouse,the near-far problem caused by the interference between speakers needs to be *** use of different access methods,Time Division Multiple Access(TDMA)or Frequency Division Multiple Access(FDMA),is essential in the SSSLPS system for solving the near-far *** static positioning in a greenhouse was first evaluated by setting different parameters to determine the optimal signal setting for a dynamic *** that,the moving robot tests were added with a motion capture system and tested the performance of TDMA and *** results demonstrated that TDMA can be used in a stationary sound-based positioning system with 12.2 mm accuracy,but it has a time delay problem in dynamic positioning.A simulation was designed to mimic the position error increases with different moving *** FDMA has the sound damping problem in high-frequency regions creating a peak detection issue,it achieved a higher accuracy with an average position error of 62.1 mm compared to 180.3 mm of *** study shows that the TDMA method is suitable for static measurements,while the FDMA method is suitable for measuring dynamic objects and controlling mobile robots.

关键词： greenhouse robots positioning system near-far problem TDMA FDMA