1999 Fiscal Year Final Research Report Summary
Development of Neutron Dosimetry Technique Based on Resonant Laser Ablation with Tunable Diode Laser
| Project/Area Number |
09308014
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
エネルギー学一般・原子力学
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| Research Institution | Nagoya University |
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Principal Investigator |
IGUCHI Tetsuo Nagoya University, Graduate School of Engineering, Professor, 工学研究科, 教授 (60134483)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Hiroyuki The University of Tokyo, Graduate School of Engineering, Associate Professor, 工学系研究科, 助教授 (70216753)
URITANI Akira Nagoya University, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (10213521)
ENOKIDA Yoh-ichi Nagoya University, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (40168795)
KAWARABAYASHI Jyun Nagoya University, Graduate School of Engineering, Research Assistant, 工学研究科, 助手 (80283414)
HASEGAWA Syu-ichi The University of Tokyo, Graduate School of Engineering, Lecturer, 工学系研究科, 講師 (90262047)
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| Project Period (FY) |
1997 – 1999
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| Keywords | Resonance Ionization / Laser Ablation / Isotope Analysis / Tunable Diode Laser / Nuclear Reaction Product / Neutron Dosimetry |
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| Research Abstract |
The present study is aiming at the development of innovative technique to measure the concentration and/or isotopic ratio of trace elements produced by nuclear reactions with neutrons and new application to nuclear engineering by using Resonant Ionization Spectroscopy (RIS), which has fundamental features of ultra high sensitivity and good elemental selectivity. In particular, we propose to make good use of 'Resonant Laser Abration (RLA)', which combines laser ablation and RIS simultaneously with a single laser. For this purpose, our research subjects are roughly classified into two categories ; one is to understand the basic process of RLA phenomena experimentally and to establish a theoretical model for RLA, and the other is to develop an RLA analytical system with a tunable diode laser, which would be suitable for engineering application, in particular for neutron dosimetry.
The main results are summarized as follows ;
(1) The basic experimental data base has been systematically obtained for RLA phenomena on several elements of nuclear nuaterials.
(2) The theoretical model for RLA has been successfully developed to reproduce the experimental resuls quantitatively. Based on this theoretical calculation, the methodology was established to search an optimal condition on laser power for detection of an element of interest.
(3) Through basic experiments to detect ^<27>Al (n, 2n) ^<26>Al reaction in an Al sample which was heavily irradiated by 14MeV neutrons, the applicability of RLA has been demonstrated as new neutron dosimetry technique.
(4) Some useful findings have been obtained to make basic design of an RLA analytical system with a tunable diode laser and a quadrupole mass spectrometer suitable for engineering application, and athe technical problems to be solved have been also made clear.
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