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The Review of Laser Engineering最新文献

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Development of the Photography System for a Steamy Turbine Blade under High Velocity Revolution 汽轮机叶片高速旋转摄影系统的研制
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_923
M. Ogaki, S. Wakui
{"title":"Development of the Photography System for a Steamy Turbine Blade under High Velocity Revolution","authors":"M. Ogaki, S. Wakui","doi":"10.2184/LSJ.42.12_923","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_923","url":null,"abstract":"and a timing controller, which was a specially designed unit. With our developed system, we successfully obtained still pictures under conditions where the rotational speed and the circumference temperature were 3,000 rpm and 650 degrees, respectively.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129397150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Laser-Induced Breakdown Spectroscopy (LIBS) Analysis to Molten Alloy Production Process 激光诱导击穿光谱(LIBS)分析在熔融合金生产过程中的应用
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_913
A. Ohzu, Y. Tachi, Y. Arita
{"title":"Application of Laser-Induced Breakdown Spectroscopy (LIBS) Analysis to Molten Alloy Production Process","authors":"A. Ohzu, Y. Tachi, Y. Arita","doi":"10.2184/LSJ.42.12_913","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_913","url":null,"abstract":"わが国では,高速増殖炉(FBR)サイクル技術の研究開 発として,日本原子力研究開発機構(JAEA)を中心に「高 速増殖炉サイクル実用化研究開発(FaCT: Fast Reactor Cycle Technology Developmentプロジェクト)」を進めて きた.その中で,MOX燃料の利用も含む軽水炉から 発生する使用済み核燃料に含まれる長半減期を持つマイ ナーアクチニド(MA:キュリウム(Cm),アメリシウム (Am)等)を分離回収して,高速炉等で燃焼し,短寿命の 核種に変換をする分離核変換の技術開発が行われてき た.2011年3月の東日本大震災以降においても使用済核 燃料の環境への負荷を低減する取り組みとして,分離変 換に関する研究開発は世界的に進められている.高速炉 の炉心に装荷する燃料形態としては,核変換効率,MA の経済的及び効率的な混入,及び再処理での回収効率の 面で酸化物燃料よりも優れている金属燃料(MAを含む 合金燃料)の利用が検討されている. しかしながら,国内には強い放射能を持つMA合金燃 料を製造するための基盤技術が十分に確立されていな い.このため,実際のMAを含む燃料または模擬金属を 用いて,合金燃料製造に関する基盤技術の研究開発が精 力的に実施されている. MA合金燃料の製造にあたっては,1燃料の燃焼効率 の低下及び品質劣化のもととなるMAの非均質性,2合 金を構成する他の金属よりも蒸気圧が非常に高いAmの 取扱い,3不純物として入りやすい酸素混入の改善等, が課題とされている.小さな坩堝を用いた実験室レベル の小規模溶湯装置で少量製造する場合には,これらの影 響を抑制して高品質の合金燃料を製造できることが既に 確認されている.しかしながら,製造装置の規模がパ イロットプラント程度に大きくなった場合には,大型化 したことによる坩堝内の温度差の拡大がMAの非均質 性,高蒸気圧金属の散逸等の問題を招くことが危惧され ている. こうしたMA合金燃料の準実用規模製造過程における 坩堝内での合金組成や,溶融状態のその場観測手段とし て,レーザー誘起ブレークダウン分光分析法(LIBS)を 適用し,リアルタイムで坩堝表面及び坩堝から発生する 蒸発粒子,ヒューム等の蒸発物の成分を分析することを Special Issue","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133960033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trends of Direct Monitoring of Combustion Gas and Trace Elements by Laser Spectroscopy 激光光谱法直接监测燃烧气体和微量元素的发展趋势
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_883
Ryo Yoshiie
{"title":"Trends of Direct Monitoring of Combustion Gas and Trace Elements by Laser Spectroscopy","authors":"Ryo Yoshiie","doi":"10.2184/LSJ.42.12_883","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_883","url":null,"abstract":"レーザーを用いた分光分析技術は,オンサイト分析, オンライン分析,迅速分析,in-situ分析,直接分析等の 実現に大きく寄与するポテンシャルを持つ分析技術の一 つである.昨今の環境保全への関心や産業界における品 質管理の要求レベルの拡大がこれらの新しい分析に関す る需要を高めており,さらなる技術の進歩を促してい る.また,レーザー,分光器,検出器等の分光機器の発 達および低価格化もレーザーを用いた分光分析技術の開 発促進と普及に大きく貢献している.そのような分析技 術の一つとして,レーザー誘起プラズマ分光(Laser induced breakdown spectroscopy: LIBS)が あ る.LIBSと は,測定対象元素を含む微小体積中にレ-ザー光を集光 し,レ-ザー誘起プラズマを発生させることによって, そのプラズマ中に含まれる原子を励起させる.その固有 の励起発光を分光分析することによってプラズマ中の元 素を特定することができる.LIBSには,(1)固定波長 レーザー光源によって異なる原子種の同時測定が可能で ある,(2)試験体積内にある分析対象元素の大半が解 離・励起するのに十分なレーザーパルスエネルギーの投 入を前提にするので各元素の化合形態を考慮する必要が ない,等の特長がある.固体試料のLIBSによる分析で は,測定環境(温度・圧力・雰囲気ガス)を固定すること が可能であり,シグナル強度の再現性が高いため,検量 線法による定量分析において十分な精度が得られる.一 方,ガス中成分の直接分析の場合,測定環境自体が測定 対象のマトリックスとして変動し,レーザー誘起プラズ マ自体がその変動の影響をうけるため,シグナル強度の 測定精度向上には様々な困難がともなう.しかし, LIBSはシステムが単純で比較的安価であり,また柔軟 性やリモートセンシングへの発展性が高いなど,上述の 短所を補って余りある特長を持つ.そこで,本報告で は,LIBSに焦点をあてて,その燃焼ガス中微量成分等 の直接測定,または燃焼プロセスの関連物質の組成分析 等に関する最近のLIBS適用の事例について概説する.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122896459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In situ Elemental Analysis in Water by Laser-Induced Breakdown Spectroscopy 激光诱导击穿光谱法原位分析水中元素
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_878
T. Sakka
{"title":"In situ Elemental Analysis in Water by Laser-Induced Breakdown Spectroscopy","authors":"T. Sakka","doi":"10.2184/LSJ.42.12_878","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_878","url":null,"abstract":"Recent advancement of underwater laser-induced breakdown spectroscopy is reviewed, especially emphasizing on our recent studies on laser irradiation procedure, mechanism of the plasma and cavitation bubble formation, the effects of hydrostatic pressure, and the application to deep sea.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121367167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Application of Laser-Induced Breakdown Spectroscopy on the Elementally-Based Sorting of Steel Scrap 激光诱导击穿光谱在废钢元素基分选中的应用
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_908
S. Kashiwakura, K. Wagatsuma
{"title":"The Application of Laser-Induced Breakdown Spectroscopy on the Elementally-Based Sorting of Steel Scrap","authors":"S. Kashiwakura, K. Wagatsuma","doi":"10.2184/LSJ.42.12_908","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_908","url":null,"abstract":"Echelle-type spectrometer, and an ICCD detector. Considering spectral interferences from the emission lines of the iron matrix in the alloys, Cu I lines having wavelengths of 324.754 and 327.396 nm could be chosen. In fi ve replicate measurements of each SRM, shorter delay times after laser irradiation and longer gate widths for detecting the transient emission signal are suggested to be the optimal experiment parameters.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"51 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114094672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Applications of Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry to Thermal Power Plants 激光诱导击穿光谱和激光击穿飞行时间质谱在火力发电厂的应用
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_903
Zhenzhen Wang, Y. Deguchi, Junjie Yan, Jiping Liu, H. Watanabe, Kazuki Tainaka, R. Kurose
{"title":"Applications of Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry to Thermal Power Plants","authors":"Zhenzhen Wang, Y. Deguchi, Junjie Yan, Jiping Liu, H. Watanabe, Kazuki Tainaka, R. Kurose","doi":"10.2184/LSJ.42.12_903","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_903","url":null,"abstract":"breakdown spectroscopy(LIBS) is an analytical technique based on atomic emission spectroscopy to measure elemental composition. Time-of- fl ight mass spectrometry(TOFMS) is another appeal-ing technique for the analysis of atomic and molecular ion signals with the increased sensitivity and rapid analysis features. LIBS and laser breakdown time-of-flight mass spectrometry(LB-TOFMS) were employed in the applications of thermal power plants. The measurement of coal and fl y ash contents is the essential foundation for the adjustment of boiler combustion in thermal power plant. Rapid detection of coal and fl y ash is signi fi cant to improve the ef fi ciency of thermal power plant and to reduce the environmental pollutions. The pollutions of trace heavy metals in exhaust result in the serious in fl uence on environment and human. First step of the pollution control is the fast and precise measurement of pollutants. Laser-induced breakdown spectroscopy (LIBS) has a great potential application of on-line measurement in thermal power plant. The direct measurement of particles using LIBS was studied. The LIBS method was also improved to measure the gas phase trace species, as well as the combined method of LIBS and time-of-flight mass spectrometry (TOFMS). These results will be useful for the applications of LIBS and TOFMS.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116041717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laser-Induced Breakdown Spectroscopy for Nuclear Fuel Material 核燃料材料的激光诱导击穿光谱
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_918
K. Akaoka, M. Miyabe, H. Otobe, I. Wakaida
{"title":"Laser-Induced Breakdown Spectroscopy for Nuclear Fuel Material","authors":"K. Akaoka, M. Miyabe, H. Otobe, I. Wakaida","doi":"10.2184/LSJ.42.12_918","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_918","url":null,"abstract":"るためには非常に高い分解能の分光器を必要とする．こ の様な複雑に混在する 含有燃料を模擬するために， アクチノイドと同様に最外殻の s 軌道電子が占有され閉 能の分光器を用いてスペクトルの測定を行い，解析では 定量性を高めるために測定されたスペクトルをデコンボ For the remote analysis of a next generation nuclear fuel material containing minor actinide (MA), we applied laser-induced breakdown spectroscopy (LIBS) to uranium oxide (U 3 O 8 ), which included a small amount of neodymium oxide (Nd 2 O 3 ), as a simulated sample of MA. By using a deconvolution technique for the Nd spectra in U, we separated the complex, overlapped, and confused spectra and determined their actual intensities. As a result, a calibration curve with good linearity and a detection limit of less than 700 ppm were demonstrated.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127842767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Application of Laser-Induced Breakdown Spectroscopy for Diagnosis of Degradation of Concrete Structure 激光诱导击穿光谱在混凝土结构退化诊断中的应用
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_887
T. Fujii, S. Eto
{"title":"Application of Laser-Induced Breakdown Spectroscopy for Diagnosis of Degradation of Concrete Structure","authors":"T. Fujii, S. Eto","doi":"10.2184/LSJ.42.12_887","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_887","url":null,"abstract":"The measurement of such trace substances as chlorine in concrete is important in evaluateing the durability of reinforced concrete structures because reinforcing bars in concrete are eroded by chloride ions. Laser-induced breakdown spectroscopy (LIBS) is attractive for the fast on-site measurement of trace elements. We measured a chlorine concentration of 0.18 kg/m 3 in concrete. Thus, a chlorine concentration of 0.6 kg/m 3 , at which the reinforcing bars in concrete structures start to corrode, can be detected. We also measured the two-dimensional distribution of the emission intensity of multi-elements on the surface of a concrete specimen's cross-section. These results show that LIBS is an attractive tool for quick, high spatial resolution, and high sensitivity on-site measurement of chlorine concentration in concrete structures. Here we review the LIBS applications for the diagnostics of concrete structures.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124489966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Laser-Induced Breakdown Spectroscopy Method for Elements Analysis of Metal Ions in an Aqueous Solution in Nuclear Reprocessing Process Control 激光诱导击穿光谱法在核后处理过程控制中水溶液金属离子元素分析中的应用
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_892
H. Ohba, M. Saeki, I. Wakaida
{"title":"Application of Laser-Induced Breakdown Spectroscopy Method for Elements Analysis of Metal Ions in an Aqueous Solution in Nuclear Reprocessing Process Control","authors":"H. Ohba, M. Saeki, I. Wakaida","doi":"10.2184/LSJ.42.12_892","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_892","url":null,"abstract":"to improve detection sensitivity. We performed LIBS measurements with the sheet fl ow for the simultaneous determination of elements in simulated high-level radioactive waste liquid and discussed the application potential as a tool for online process monitoring.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133737023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Application of Laser-Induced Breakdown Spectroscopy to Engine Research 激光诱导击穿光谱在发动机研究中的应用
The Review of Laser Engineering Pub Date : 2014-12-01 DOI: 10.2184/LSJ.42.12_897
N. Kawahara, E. Tomita
{"title":"Application of Laser-Induced Breakdown Spectroscopy to Engine Research","authors":"N. Kawahara, E. Tomita","doi":"10.2184/LSJ.42.12_897","DOIUrl":"https://doi.org/10.2184/LSJ.42.12_897","url":null,"abstract":"This report explained the local equivalence ratio (air fuel ratio) measurements of engine exhaust gas and direct fuel injection in engine cylinder using laser-induced breakdown spectroscopy (LIBS) and spark-induced breakdown spectroscopy (SIBS). When we use LIBS/SIBS in combustion system, we can discuss simultaneous laser/spark ignition and equivalence ratio measurement of premixed mixture. The intensity ratio of H/O or H/N showed a good agreement with preset equivalence ratio in engine exhaust gas and premixed mixture in engine cylinder. The influence of spark discharge characteristics on emission spectra was investigated by simultaneous measurement of spark discharge visualization and spectroscopy. The relationship between air-fuel ratio and the emission intensity ratio was obtained in premixed gas combustion in a spark ignition engine. There was a tendency that local air-fuel ratio decreases with advance of the injection timing from the fi xed ignition timing. It was observed that spark discharge was affected by the flow due to injection. LIBS/SIBS is very good tool to discuss the combustion characteristics in real engine researches.","PeriodicalId":308244,"journal":{"name":"The Review of Laser Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130594714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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