서지주요정보
철 시편에서 3 kW cw $CO_2$ 레이저에 의해 발생된 플라즈마의 분광학적 분석 = Spectroscopic analysis of plasma produced from iron workpiece by a 3kW cw $CO_2$ laser
서명 / 저자 철 시편에서 3 kW cw $CO_2$ 레이저에 의해 발생된 플라즈마의 분광학적 분석 = Spectroscopic analysis of plasma produced from iron workpiece by a 3kW cw $CO_2$ laser / 김인웅.
저자명 김인웅 ; Kim, In-Woong
발행사항 [대전 : 한국과학기술원, 1993].
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소장정보

등록번호

8003532

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 93006

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Plasma produced from carbon iron(S45C) workpiece by a 3 kW cw $CO_2$ laser was spectroscopically analyzed. To obtain spectra from plasma, a spectrometer equipted with an OMA-II multichannel detector was used. The spectra in the range of 2700-2900Å were observed. Since OMA-II has a multi-track scanning mode, the plasma spectrum from a specific height was possible. $N_2$ and Ar gases were used as shielding gas. The measured temperature of plasma was 0.7-0.8 eV. The spectral intensity of Fe lines was increased when the Ar shieding gas was used. The temporal variation of plasma was observed from the spectral intesnsity of Fe II 2746Å line. A photomultiplier tube interfaced with a 10 kHz AD converter is attached to the spectrometer. The observed signal fluctuated in milli-second time scale with occasional occurrence of 25 ms pulses when 2.9 kW laser focued on the S45C workpiece with ground suface. When the S45C workpiece with heat treatment was used in 3 kW laser, the periodic signal of the spectral line intensity was observed and the period was changed with moving velocity of workpiece. It shows that the surface condition of the workpiece directly affects the interaction of incident laser with generated plasma.

서지기타정보

서지기타정보
청구기호 {MPH 93006
형태사항 [iii], 65 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : In-Woong Kim
지도교수의 한글표기 : 남창희
지도교수의 영문표기 : Chang-Hee Nam
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 63-65
주제 Carbon deoxide lasers.
Laser plasmas.
Iron.
Spectrum analysis.
탄산 가스 레이저. --과학기술용어시소러스
레이저 플라스마. --과학기술용어시소러스
철. --과학기술용어시소러스
분광학. --과학기술용어시소러스
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