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A Newly Developed Non-Destructive Tritium measurement Technique and Its Application to V-4Cr-4Ti Alloy

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Plasma Science and Technology 2006年第6期8卷 741-744页

作者：刘翔陈学 H.homma Y.HATANO m.mATSUYAmA Southwestern Institute of Physics Chengdu 610041China Sichuan General Fire Brigade Chengdu 610072China Hydrogen Isotope Research Centre Toyama UniversityGofuku 3190Toyama 930-8555Japan

A non-destructive and in-situ technique for the measurement of tritium in materials, namely β-ray-induced X-ray spectrometry （BIXS）, has been developed recently. In the present study a V-4Cr-4Ti alloy was pre-heated at 1000℃ for 2 h to form a recrystallization structure before the tritium absorption experiments were conducted. Firstly the hydrogen isotope gas was charazterized by means of a quadrupole mass spectrometer （QmS） and a small-sized ionization chamber. Then hydrogen isotope absorption tests of V-4Cr-4Ti alloy were performed at 400 ℃ and the atomic concentration of hydrogen isotope in V-4Cr-4Ti alloy was estimated as 0.17% with a tritium content of approximately 2.5 ppm. Experimental results indicate that BIXS is a quite useful tool for quantitatively measuring the tritium content and tritium distribution in the surface layers of vanadium alloys and no strong trapping effects of tritium exist in the pre-heated V-4Cr-4Ti alloy.

关键词： tritium V-4Cr-4Ti β-ray-induced X-ray spectrometry tritium measurements

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A Newly Developed Non-destructive Tritium measurement Technique and Its Application to a V-4Cr-4Ti Alloy

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Southwestern Institute of Physics Annual Report 2006年第1期 154-155页

作者： LIU Xiang CHEN Xue homma H. Hatano Y. matsuyama m. 不详 Sichuan General Fire Brigade Chengdu 610041 China Hydrogen Isotope Research Center Toyama University Gofuku 3190 Toyama 930-8555 Japan

Development of a High-Intensity Neutron monochromator

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Development of a High-Intensity Neutron Monochromator

DESIGN OF LIGHT-DIFFUSING SKYLIGHTS BASED ON OPTICAL PROPERTIES-ESTImATION AND mEASUREmENT OF LIGHTING QUALITY AND ENERGY SAVINGS-

作者： m.Furusaka N.Ishikawa m.Hino T.Sato Y.Okusawa F.Fujita A.homma m.Sugiyama Faculty of Engineering Hokkaido University

INTRODUCTION:Pyrolytic-Graphite(PG) is widely used as a high-integrated-reflectivity neutron monochromator. It is a very good monochromator material for moderate-resolution ***,applications such as small-angle neutron scattering(SANS) or reflectometer instruments need a wavelength-band of more than a few%,possibly about 10%.In such cases,not only unreasonably high mosaicity of more than 2 degrees is required,but it must also be coupled with incident beam that has extremely high beam-divergence of about

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DESIGN OF LIGHT-DIFFUSING SKYLIGHTS BASED ON OPTICAL PROPERT...

meV-and Sub-meV-photon Sources Based on Compton Backscattering at SPring-8 and KPSI-JAEA

Lighting Quality & Energy Efficiency

作者： Suzuki,T. Kato,T. Ono,m. Toyama,T. Koga,Y. Nishimura,S. Sasaki T. homma,A. Shizuoka Industrial Institute of Shizuoka Prefecture ShizuokaShizuokaJAPAN. Sky Planning Inc. HamamatsuShizuokaJAPAN. Faculty of Human-Environment Studies Kyushu UniversityFukuokaFukuokaJAPAN. Toshiba Lighting & Technology Corporation YokosukaKanagawaJAPAN. ITO ARCHITECTS & ENGINEERS INC. Chiyoda-kuTokyoJAPAN.

＜正＞Objective: To reduce the amount of electricity used for lighting with an appropriate illumination environment using light-diffusing skylights,we endeavored to establish design methods to achieve the required uniform *** that purpose,we derived luminous intensity distributions of skylights under the CIE standard clear sky by an optical simulation based on the optical properties of the

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原子核物理评论 2009年第S1期26卷 94-99页

作者： K.Kawase m.Kando T.Hayakawa I.Daito S.Kondo T.homma T.Kameshima H.Kotaki Y.Fukuda A.Faenov T.Shizuma S.V.Bulanov T.Kimura T.Tajima m.Shoji S.Suzuki K.Tamura H.Ohkuma Y.Arimoto T.Yorita m.Fujiwara S.Okajima Kansai Photon Science Institute Japan Atomic Energy Agency Japan Synchrotron Radiation Research Institute Department of Physics Osaka University Research Center for Nuclear Physics Osaka University

Recently we have constructed two facilities for generating photon beams in the meV and sub-meV energy regions by means of the Compton backscattering with a laser and an electron beam at SPring-8 and at Kansai Photon Science Institute of Japan Atomic Energy Agency(KPSI-JAEA). The meV-photon source at SPring-8 consists of a continuous-wave optically-pumped far infrared laser with a wavelength of 118.8 μm and an 8 GeV stored electron beam. Present meV-photon flux is estimated to be 1.3×103 photons/s. On the other hand,the sub-meV-photon source at KPSI-JAEA consists of a pulse Nd∶YAG laser with a wavelength of 1 064 nm and a 150 meV electron beam accelerated by microtron. In the first trial of the photon production in this source,backscattered photon flux is estimated to be 20 photons/pulse. Both the Compton backscattered photon sources have possibilities to be used for new tools in various fields such as nuclear physics,materials science,and astronomy.

关键词： laser Compton backscattering polarized γ-ray polarized X-ray

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下颌骨节段性切除术后游离腓骨肌皮瓣联合血管化腓肠神经移植重建下牙槽神经

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中国口腔颌面外科杂志 2016年第1期 61-61页

作者： Tanaka K Okazaki m.homma T 张凌

下颌骨节段性切除术后,双侧下牙槽神经(IAN)损伤常常导致下唇和牙龈感觉丧失。该文作者旨在报道下颌骨节段切除联合放化疗后,采用血管化神经移植重建双侧IAN,利用腓骨肌皮瓣联合腓肠神经重建下颌骨。采取端端吻合方式将腓肠神经的近、... 详细信息

下颌骨节段性切除术后,双侧下牙槽神经(IAN)损伤常常导致下唇和牙龈感觉丧失。该文作者旨在报道下颌骨节段切除联合放化疗后,采用血管化神经移植重建双侧IAN,利用腓骨肌皮瓣联合腓肠神经重建下颌骨。采取端端吻合方式将腓肠神经的近、远心端分别缝合于左、右两侧的IAN残端。颏神经残端采用端侧吻合缝合于腓肠神经。Semmes-Weinstein

关键词：下颌骨颌腓骨肌皮瓣血管化切除术后牙槽节段性

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钼硼对低碳钢的复合强化作用

水钢科技 2018年第2期 53-62页

作者： Kyohei ISHIKAWA Hirofumi NAKAmURAO Ryulchi homma masaaki FUJIOKA manabu HOSHINO 高长益刘立德叶雅妮张东升日本新日铁住友金属公司钢铁研究实验室日本新日铁住友金属公司君津研究开发实验室首钢水钢技术中心贵州六盘水553028

在硼合金钢中加入钼元素，通过抑制Fe23（C，B）6的析出，从而提高钢的硬度，这就是mo—B复合效应。但是，由于以前关于这种复合效应的研究主要探讨的是mo含量小于0．80％的钢。因此，产生复合效应的最大钼含量仍然不清楚。所以，在本... 详细信息

在硼合金钢中加入钼元素，通过抑制Fe23（C，B）6的析出，从而提高钢的硬度，这就是mo—B复合效应。但是，由于以前关于这种复合效应的研究主要探讨的是mo含量小于0．80％的钢。因此，产生复合效应的最大钼含量仍然不清楚。所以，在本研究中。我们探讨mo含量大于0．80％、含C量为0．15％的钢，以确定产生mo—B复合效应的最大钼含量。随着mo含量增加到0．75％，mo—B复合效应增大，然后呈下降趋势。随着mo含量从1.0％增加到1．5％。则最佳B含量从12ppm下降到11ppm。在1．0％mo-20ppmB钢和1．5％mo-20ppmB钢中。析出相是m02FeB2而不是Fe23（C，B）60热力学计算表明，在20ppmB钢中，随着钼含量的增加，mo2FeB2析出的起始温度上升。但是，甚至在950℃的加热温度，m02FeB2也能析出。因此，产生mo-B复合强化效应的最大mo含量主要取决于加热过程中mo2FeB2的析出。

关键词：硬度硼偏析钼复合效应