Development of isotope microscope for proto-solar system survey

用于原太阳系调查的同位素显微镜的研制

• 批准号: 06554021
• 负责人: YURIMOTO Hisayoshi
• 金额: $ 5.12万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06554021/
• 关键词: Isotope microscope; Solid-state device; Ion beam; Charged particle; Secondary ion mass spectrometry; Meteovite; イオン検出素子; 半導体素子; 二次イオン質量分析; 同位体; 微量元素; 二次元分析

A novel solid-state area detector for charged particles has been developed in this study. The detector called AMI is based on semiconduct or theory for Si substrate. Pixel electrodes for bombardment of ions and electrons with the energy from eV to keV were deposited on the semiconductor device A prote-type model of isotope microscope has also been developed. The isotope microscope is combination system of the AMI detector with stigmatic secondary ion mass spectrometer.The isotope microscope applied to the study of isotope imaging of solid sample. Spatial resolution of the image achieved to 1 mum. The image size is 512 (H) x 250 (V) pixels. Dynamic range of one pixel is four orders of magnitude. The imaging area is controlled by zooming system of the mass spectrometer. The zooming area is over the range of 25 to 400 mum. We are planning to get isotope ratio image of meteoritic materials. The isotope image may make clear the origin and evolution of the solar system and planets. The AMI detector and isotope microscope are also effective tool for material sciences and high energy physics.

本研究发展了一种新型的固态带电粒子面探测器。称为AMI的探测器是基于硅衬底的波导或理论。在半导体器件上淀积了用于能量从eV到keV的离子和电子轰击的象素电极。同位素显微镜是AMI探测器与像散二次离子质谱仪的组合系统，用于固体样品的同位素成像研究。图像的空间分辨率达到1 μ m。图像大小为512（H）x 250（V）像素。一个像素的动态范围是四个数量级。成像区域由质谱仪的变焦系统控制。变焦区域在25至400 μ m的范围内。我们计划得到陨石物质的同位素比值图像。同位素图像可以清楚地说明太阳系和行星的起源和演化。AMI探测器和同位素显微镜也是材料科学和高能物理的有效工具。

项目成果

圦本尚義: "国体惑星科学の基礎的手法と応用。イオンマイクロプローブ" サイエンスハウス, 229 (1994)

Naoyoshi Hajimoto：“国家行星科学的基本方法和应用。离子微探针”《科学之家》，229（1994）

Yurimoto,H.: "Oxygen isotope distribution in Allende CAI." Lunar Planet.Sci.XXV. 25. 1539-1540 (1994)

Yurimoto,H.：“阿连德 CAI 中的氧同位素分布。”

Yurimoto,H.: "In-situ oxygen isotope analysis by SIMS." U.S.Geological Survey Circular. 1107. 363 (1994)

Yurimoto,H.：“通过 SIMS 进行原位氧同位素分析。”

Tunogae, T.and Yurimoto, H.: "Single zircon U-Pb geochronology of Limpopo Belt by secondary mass spectrometry." Geochem.J.29. 197-205 (1995)

Tunogae, T. 和 Yurimoto, H.：“通过二次质谱法对林波波带的单锆石 U-Pb 地质年代学。”

圦本尚義: "Oxygen isotope distribution in Allende CAI." Lunar Planet.Sci.XXV. 25. 1539-1540 (1994)

Naoyoshi Kamoto：“阿连德 CAI 中的氧同位素分布。”Sci.XXV 25。1539-1540 (1994)