Development of high spatial resolution and non-destructive chemical analysis for ice core

冰芯高空间分辨率和无损化学分析的发展

• 批准号: 10558082
• 负责人: AZUMA Nobuhiko
• 金额: $ 8.19万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10558082/
• 关键词: Nd; YAG laser; ablation; LIF; microanalysis; ice; sodium; dye laser; ice core; Nd:YAGレーザー

The purpose of this study is to develop a continuous and non-destructive technique to analyze chemical constituents in ice core by using Laser Induced Fluorescence method, which enable us to measure the concentration of impurity in ppb order in position resolution of the order of 1 mm.This study concluded that the device composed of the sample chamber in which a sample can be irradiated by YAG laser under unmelted condition and of detecting part of fluorescence was successfully developed and made it possible to detect of sodium content in ice with consuming less than 1mm^3 of ice. At the moment minimum detection level of sodium concentration is 1 ppm. For further study it is necessary to prepare a sample that contains impurity homogeneously.

本研究旨在发展一种连续、无损的激光诱导荧光分析冰芯化学成分的方法，实验结果表明，由YAG激光在未熔化状态下照射样品的样品室和检测样品中杂质浓度的装置，可以在1mm量级的位置分辨率下测量ppb量级的杂质浓度。成功地开发了部分荧光，并使在消耗小于1mm^3的冰的情况下检测冰中的钠含量成为可能。目前，钠浓度的最低检测水平为1 ppm。为了进一步研究，有必要制备含有均匀杂质的样品。

项目成果

M.TAKATA 他3名: "An attempt at determination of calcium in ice by laser induced breakdown spectroscopy"Bulletin of Glaciological Research. 17. 37-42 (2000)

M.TAKATA 和其他 3 人：“通过激光诱导击穿光谱法测定冰中钙的尝试”冰川学研究公报 17. 37-42 (2000)。

S.Kiyoku,Y.Kurosaki,I.Oguro,S.Nakamura and Y.Ito: "Effects of Laser PuLse Shape on Jet-like Plasma Formation in Laser Ablation of Metals under Atmosphere at High Fluence:Observation by Nanosecond Imageing Technique"Proc.SPIE. 4088. 102-105 (2000)

S.Kiyoku、Y.Kurosaki、I.Oguro、S.Nakamura 和 Y.Ito：“激光脉冲形状对高通量大气激光烧蚀金属中射流状等离子体形成的影响：纳秒成像技术观察”Proc

Y.ITO 他3名: "Jet-like plasma formation in Laser ablation at metals observed by Nanosecond Imaging Technigue in Gases"Proc.of Laser Materials Processing Conference 99.. 87. 61-70 (1999)

Y.ITO 和其他 3 人：“气体中纳秒成像技术观察到的金属激光烧蚀中的喷射状等离子体形成”Proc.of Laser Materials Manufacturing Conference 99.. 87. 61-70 (1999)

Y.ITO 他2名: "Effects of Repetitive Irradiation in Laser Ablation of Aluminum in Gases Observed by"Proc of SPIE. 4088. 94-97 (2000)

Y.ITO 和其他 2 人：“观察到的气体中铝激光烧蚀的重复照射效应”Proc of SPIE。4088. 94-97 (2000)

Y.ITO 他3名: "Nanosecond laser ablation of metals in gases observed by photoacoustic and imaging techniques"Proc.of SPIE. 4065. 461-469 (2000)

Y.ITO 和其他 3 人：“通过光声和成像技术观察气体中金属的纳秒激光烧蚀”Proc.of SPIE 4065. 461-469 (2000)。