1986 Fiscal Year Final Research Report Summary
Trace element detection method and apparatus based on the resonant Voigt effect spectroscopy
| Project/Area Number |
60850010
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
物理計測・光学
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| Research Institution | TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY |
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Principal Investigator |
YAMAMOTO Manabu Tokyo University of Agriculture and Technology, 工学部, 教授 (60166824)
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| Co-Investigator(Kenkyū-buntansha) |
村山 精一 株式会社日立製作所, 中央研究所第4部, 主任研究員
TAKUBO Yoshitaka Tokyo University of Agriculture and Technology, 工学部, 助教授 (10015109)
MURAYAMA Seiichi Central Research Laboratory, Hitachi, Ltd.
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| Project Period (FY) |
1985 – 1986
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| Keywords | Voigt effect / Laser spectroscopy / High-resolution spectroscopy / Atomic spectroscopy / Zeeman effect / Magneto-optic effect / Dye laser / ナトリウム原子 |
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| Research Abstract |
Analytical detection sensitivity of the resonant magneto-optic effect in the Voigt configuration (transverse magnetic field) was investigated by using a narrow-band tunable dye laser as a light source and sodium atoms in a flame as a sample. The elliptically polarized laser beam was tuned to the sodium <D_2> line. The signal to noise ratio was optimized by adjusting the ellipticity of incident light and the orientation of the polarization analyzer. The observed profiles of the Voigt signal agreed with the theoretical prediction. The detection sensitivity of the Voigt effect was enhanced by a factor of 2 x <10^2> when compared with the atomic absorption in the same experimental arrangement. The absolute values of the atomic number density obtained from the Voigt effect and the absorption agreed within the experimental accuracy.
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