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In this paper, the time-integrated image pattern of spatial distribution and time-resolved image of optical radiation are measured in the normal direction from the rear side of targets by employing optical streak camera on the 100 TW femtosecond laser facility. The image pattern of spatial distribution presents a strip-shape: the region of optical radiation has a radiation angle and optical intensity distribution, and contains various components; the time-resolved image of optical radiation presents the time-resolved pattern of the optical radiation, witch further proves that the transition radiation is intense, which has short duration (ps) and correspouns to duration of TR of 85.5 ps. and other optical radiations are weak, which have very long duration (ns). The time-resolved characteristic of optical radiation can provide new evidence for discrimination and judgement of TR.
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Keywords:
- femtosecond laser /
- time characteristic /
- optical radiation /
- transition radiation
[1] Wang G C, Deng L, Zheng Z J, Chen T, Zhang T 2007 High Power Laser and Particle Beams 19 241 (in Chinese) [王光昶, 邓利, 郑志坚, 陈涛, 张婷 2007 强激光与粒子束 19 241]
[2] Wang G C, Zheng Z J, Yang X D, Gu Y Q, Liu H J, Wen T S, Ge F F, Jiao C Y, Zhou W M, Zhang S G, Wang X X 2006 Spectroscopy and Spectral Analysis 26 785 (in Chinese) [王光昶, 郑志坚, 杨向东, 谷渝秋, 刘宏杰, 温天舒, 葛芳芳, 焦春晔, 周维民, 张双根, 王向贤 2006 光谱学与光谱分析 26 785]
[3] Yuan X H, Li Y T, Xu M H, Yu Q Z, Wang S J, Zhang J, Zhao W, Wang G C, Wen X L,, He Y L, Zhang S G, Wang X X, Huang W Z, Gu Y Q 2006 Acta. Phys. Sin. 55 5362 (in Chinese) [远晓辉, 李玉同, 徐妙华, 于全芝, 王首钧, 张杰, 赵卫, 王光昶, 温贤伦, 何颖玲, 张双根, 王向贤, 黄文忠, 谷渝秋 2006 55 5362]
[4] Yu Q Z 2005 Ph. D. Dissertation (Beijing: Institute of physics, Chinese Academy of Sciences) 289---102 (in Chinese) [ 于全芝 2005 博士学位论文 (北京: 中国科学院物理研究所) 第89---102页]
[5] Tan S J, Zheng J 2007 Acta. Phys. Sin. 56 7132 (in Chinese) [谭世杰, 郑坚 2007 56 7132]
[6] Santos J J, Amiranoff F, Baton S D, Gremillet L, Koenig M, Martinolli E, Rabec M, Gloahec M Rabec Le, Rousseaux C, Batani D, Bernardinello A, Greison G, and Hall T 2002 Phys. Rev.Lett. 89 025001
[7] Baton S D, Saantos J J, Amiranoff F, Popescu H, Gramillet L, Koenig M, Martinolli E, and Guilbaud O 2003 Phys. Rev. Lett. 91 5001
[8] Santos J J, Amiranoff F, Baton S D, Koenig M, Martionlli E, Gremillet L, Popescu H, Batani D 2001/2002 Central Laser Facility Annual Report (Palaiseau: Laboratoire pour 2003) p4
[9] Zheng J, Tanaka K A, Miyakoshi T, Kitagawa Y, Kodama R, Kurahashi T, Yamanaka T 2003 Phys. Plasmas 10 2994
[10] Popescu H, Baton S D, Amiranoff F, Santos J J, Gremillet L, Koenig M, Martionlli E 2005 Phys. Plasmas 12 063106
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[1] Wang G C, Deng L, Zheng Z J, Chen T, Zhang T 2007 High Power Laser and Particle Beams 19 241 (in Chinese) [王光昶, 邓利, 郑志坚, 陈涛, 张婷 2007 强激光与粒子束 19 241]
[2] Wang G C, Zheng Z J, Yang X D, Gu Y Q, Liu H J, Wen T S, Ge F F, Jiao C Y, Zhou W M, Zhang S G, Wang X X 2006 Spectroscopy and Spectral Analysis 26 785 (in Chinese) [王光昶, 郑志坚, 杨向东, 谷渝秋, 刘宏杰, 温天舒, 葛芳芳, 焦春晔, 周维民, 张双根, 王向贤 2006 光谱学与光谱分析 26 785]
[3] Yuan X H, Li Y T, Xu M H, Yu Q Z, Wang S J, Zhang J, Zhao W, Wang G C, Wen X L,, He Y L, Zhang S G, Wang X X, Huang W Z, Gu Y Q 2006 Acta. Phys. Sin. 55 5362 (in Chinese) [远晓辉, 李玉同, 徐妙华, 于全芝, 王首钧, 张杰, 赵卫, 王光昶, 温贤伦, 何颖玲, 张双根, 王向贤, 黄文忠, 谷渝秋 2006 55 5362]
[4] Yu Q Z 2005 Ph. D. Dissertation (Beijing: Institute of physics, Chinese Academy of Sciences) 289---102 (in Chinese) [ 于全芝 2005 博士学位论文 (北京: 中国科学院物理研究所) 第89---102页]
[5] Tan S J, Zheng J 2007 Acta. Phys. Sin. 56 7132 (in Chinese) [谭世杰, 郑坚 2007 56 7132]
[6] Santos J J, Amiranoff F, Baton S D, Gremillet L, Koenig M, Martinolli E, Rabec M, Gloahec M Rabec Le, Rousseaux C, Batani D, Bernardinello A, Greison G, and Hall T 2002 Phys. Rev.Lett. 89 025001
[7] Baton S D, Saantos J J, Amiranoff F, Popescu H, Gramillet L, Koenig M, Martinolli E, and Guilbaud O 2003 Phys. Rev. Lett. 91 5001
[8] Santos J J, Amiranoff F, Baton S D, Koenig M, Martionlli E, Gremillet L, Popescu H, Batani D 2001/2002 Central Laser Facility Annual Report (Palaiseau: Laboratoire pour 2003) p4
[9] Zheng J, Tanaka K A, Miyakoshi T, Kitagawa Y, Kodama R, Kurahashi T, Yamanaka T 2003 Phys. Plasmas 10 2994
[10] Popescu H, Baton S D, Amiranoff F, Santos J J, Gremillet L, Koenig M, Martionlli E 2005 Phys. Plasmas 12 063106
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