巻号一覧
46 巻, 11 号
「レーザー駆動中性子源の学術・産業応用に向けた展望」特集号
選択された号の論文の7件中1～7を表示しています
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「レーザー駆動中性子源の学術・産業応用に向けた展望」特集号
特 集
レーザー解説
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有川 安信2018 年 46 巻 11 号 p. 634-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスCompact neutron sources have been used as a various diagnostics such as neutron diffraction, neutron resonant analysis, and neutron radiography. The developments of the neutron detectors are essential for all of these applications, while the techniques are strongly dependent on the neutron energy and the aim of the measurement. This paper reviews neutron detection techniques pertinent to promote compact neutron source uses. Along with general neutron detection systems with conventional counters for slow neutrons, we have highlighted detectors for high energy neutrons with high time resolution and high sensitivity which could be applied in a laser-driven compact neutron source.抄録全体を表示PDF形式でダウンロード (2676K) -
池田 裕二郎2018 年 46 巻 11 号 p. 641-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスIn viewing significant progresses in technical achievement toward a high-intensity neutron source driven by a high-power laser came up with the high power laser development, we have reviewed the currently most advanced moderator system and neutron optics, which are the key elements for the neutron beam applications. Regarding the moderators, concepts adopted in J-PARC pulsed neutron source, which is one of most advanced system, were described to give a baseline design. Also a new to direction of moderator concept is shown, which could be a high brightness candidate for the high-intensity laser driven system. On the neutron optics, the most fundamental consideration is primarily reviewed along with recent progress in new devises for enrichment of neutron-beam characteristics.抄録全体を表示PDF形式でダウンロード (1345K) -
三間 圀興, 福嶋 喜章2018 年 46 巻 11 号 p. 642-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスIn this special issue, the present status and the prospects of applications of laser driven neutron sources are reviewed. In particular, the unique applications related to the merits of laser neutron sources, such as compactness of system size, short pulse, and small source size. As an example, the neutron resonance absorption radiography is described, which will be applied to diagnose elemental distributions in massive objectives. The useful resonance lines for this applications are shown in the figure. The contents of the following chapters are 1) Status of R&D of neutron optics and diagnostics, 2) Compact moderator design for laser neutron source, 3) Examples of academic, industrial, and medical applications of compact accelerator driven neutron sources, 4) Industrial applications in UK, and so on.抄録全体を表示PDF形式でダウンロード (371K) -
清水 裕彦2018 年 46 巻 11 号 p. 647-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスApplications of the neutron beam in academic research fields are briefly summarized over material researches, nuclear astrophysics and fundamental physics on the basis of existing research activities currently in progress.抄録全体を表示PDF形式でダウンロード (771K) -
大竹 淑恵2018 年 46 巻 11 号 p. 654-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスA compact neutron source by using a particle accelerator is a promising tool for actual material analysis, infrastructural diagnostics, nuclear detection, and medical treatment. We have been operating the neutron source RANS (RIKEN Accelerator-driven compact Neutron Source) with 7 MeV proton LINAC with a beryllium long-life target for 6 years. In recent years, imaging with fast and thermal neutrons, engineering diffraction for texture evolution estimation and austeninte volume fraction estimation for iron and steel, Prompt-Gamma neutron Analysis (PGA) are the major activities. The research and development results with RANS fast neutron back scattered imaging methods for large scale concrete structures revels that the requirement for the neutron yield is less than 1011 neutrons s‒1 especially for out-door type compact neutron source. RANS2 has been designed and developed with 2.49 MeV proton linac. RANS proves that compact neutron source is useful for neutron scattering analysis on-site with reasonable measurement time, and resolution.抄録全体を表示PDF形式でダウンロード (1839K) -
福嶋 喜章2018 年 46 巻 11 号 p. 659-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスRecent topics of applications of compact neutron sources and expected possibilities of a laser-driven neutron source for industrial and medical uses are discussed. The laser-driven neutron would be suitable for neutron resonance absorption imaging because of its point source with narrow pulsed width. A boron nutron capture therapy (BNCT) using an accelerator have been confirmed as an efficacious radiation treatment for cancers. Compact neutron facilities and those at J-PARC are useful tools for researches and development in industries such as steel, tire rubber and automobile companies. Although the laser driven one is also expected to be applied for these applications, collaborative works of laser and neutron scientists and medical and industrial sites should be necessary.抄録全体を表示PDF形式でダウンロード (991K) -
Ceri BRENNER2018 年 46 巻 11 号 p. 665-
発行日: 2018年
公開日: 2020/12/18
ジャーナル オープンアクセスLaser-driven beams of neutrons have been studied experimentally in the UK since the 1980s within the inertial confinement fusion programme. Only in the last two decades has there been dedicated effort to characterise and optimise the laser-driven concept of neutron source generation with a view to their use in scientific and industrial applications. Here, we present an overview of research in this field carried out in the last 5 years within the UK and highlight key developments in enabling technology required for exploitation of these beams for applications. We also introduce the PLATINUM project ‒ a collaboration with industry aiming to assess the feasibility of using laser-driven, beamed neutrons for isotope inspection in nuclear waste barrels along with in-line imaging capability using laser-driven x-rays. With the recent delivery of high-peak-power laser technology operational at 10 Hz pulse rates, a laser-driven, multi-modal nuclear waste assay beamline installation within the waste management environment can now be envisioned.抄録全体を表示PDF形式でダウンロード (1325K)
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