• 제목/요약/키워드: Physics

검색결과 14,376건 처리시간 0.043초

KAMTEL: The construction and test

  • Na, G.;Artikofva, S.;Kim, J.E.;Jeong, S.;Jung, A.;Lee, H.Y.;Lee, J.;Nam, S.;Oh, S.;Park, I.H.;Park, J.H.;Chung, T.;Kim, W.S.
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2007년도 한국우주과학회보 제16권2호
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    • pp.99.1-99.1
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    • 2007
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Comparison of Intravascular Bonghan Ducts from Rats and Mice

  • Lee Byung-Cheon;Baik Ku-Youn;Cho Sung-Il;Min Chul-Hee;Johng Hyeon-Min;Hahm Jung-Hyun;Choi Chun-Ho;Yi Seung-Ho;Soh Kyung-Sun;Park Dae-Hun;Ahn Se-Young;Cheun Byeung-Soo;Soh Kwang-Sup
    • 대한예방한의학회지
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    • 제7권1호
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    • pp.47-53
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    • 2003
  • 쥐와 생쥐의 혈관내 봉한관을 채취하는 새로운 방법을 개발하였다. 복대정맥과 동맥에서 양끝을 겸자로 묶고 혈액을 뽑아냄으로써 부서진 봉한관 조각들을 찾아 광학 현미경으로 관찰하는 방법이다. 장점은 피브린이 없이 순수 봉한관을 얻는 것이고, 단점은 그 길이가 너무 짧은 점이다.

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Effects of laser polarization on hot electron emission in femtosecond laser-plasmas

  • Zhang, J.;Chen, L.M.;Teng, H.;Liang. T.J.;Zhao, L.Z.;Wei, Z.Y.
    • 한국광학회:학술대회논문집
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    • 한국광학회 2001년도 제12회 정기총회 및 01년도 동계학술발표회
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    • pp.98-102
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    • 2001
  • Effects of laser polarization were studied on behaviors of fast electrons produced from an aluminum target irradiated by a solid target irradiated by obliquely incident laser pulses at Bx10$\^$15/ W/cm$^2$. Jet emission of outgoing fast electrons collimated in the polarization direction was observed for the s-polarized laser irradiation, whereas for the p-polarized irradiation, very directional emission of outgoing fast electrons was found close to the normal direction of the target. The behaviors of in-going fast electrons into the target for s- and p-polarized irradiation were also investigated by observing x-ray Bremsstrahlung radiation at the backside of the target.

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Nondestructive Optical Measurement of Refractive-index Profile of Graded-index Lenses

  • Lee, Byoung-Hwak;Shin, Nae-Ho;Jeong, Kwan;Park, Myoung-Jin;Kim, Byung-Gyu;Yoo, Jang-Hoon;Kim, Dae-Geun;Yun, Ki-Hyuck;Lee, Kew-Seung;Kim, Kyung-Hwan;Kim, Dae-Kyu;Park, Seung-Han
    • Journal of the Optical Society of Korea
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    • 제13권4호
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    • pp.468-471
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    • 2009
  • We propose a simple nondestructive method to obtain refractive-index profiles of a graded-index (GRIN) light-focusing rod by means of a diffraction grating. In our proposed method, a laser beam is illuminated through a diffraction grating perpendicular to the axis of the GRIN lens and the separation between the zeroth and first-order diffraction peaks is measured and analyzed. The results demonstrate that the refractive-index profiles of commercially available GRIN lenses can be successfully reconstructed.