Axial variation of average size of methane clusters in a gas jet produced by supersonic expansion of methane through a cylindrical nozzle of 0.8 mm in diameter is observed using a Rayleigh scattering method. The scattered light intensity exhibits a power scaling on the backing pressure ranging from 16 to 50 bar, and the power is strongly Z dependent varying from 8.4 (Z=3 mm) to 5.4 (Z=11 mm), which is much larger than that of the argon cluster. The scattered light intensity versus axial position shows that the position of 5 mm has the maximum signal intensity. The estimation of the average cluster size on axial position Z indicates that the cluster growth process goes forward until the maximum average cluster size is reached at $Z=9$ mm, and the average cluster size will decrease gradually for Z>9 mm.
Axial variation of average size of methane clusters in a gas jet produced by supersonic expansion of methane through a cylindrical nozzle of 0.8 mm in diameter is observed using a Rayleigh scattering method. The scattered light intensity exhibits a power scaling on the backing pressure ranging from 16 to 50 bar, and the power is strongly Z dependent varying from 8.4 (Z=3 mm) to 5.4 (Z=11 mm), which is much larger than that of the argon cluster. The scattered light intensity versus axial position shows that the position of 5 mm has the maximum signal intensity. The estimation of the average cluster size on axial position Z indicates that the cluster growth process goes forward until the maximum average cluster size is reached at $Z=9$ mm, and the average cluster size will decrease gradually for Z>9 mm.
(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
引用本文:
HAN Ji-Feng;YANG Chao-Wen;MIAO Jing-Wei;LU Jian-Feng;LIU Meng;LUO Xiao-Bing;SHI Mian-Gong. An Experimental Observation of Axial Variation of Average Size of Methane Clusters in a Gas Jet[J]. 中国物理快报, 2010, 27(4): 43601-043601.
HAN Ji-Feng, YANG Chao-Wen, MIAO Jing-Wei, LU Jian-Feng, LIU Meng, LUO Xiao-Bing, SHI Mian-Gong. An Experimental Observation of Axial Variation of Average Size of Methane Clusters in a Gas Jet. Chin. Phys. Lett., 2010, 27(4): 43601-043601.
[1] Ditmire T, Zweiback J, Yanovsky V P, Cowan T E, Hays G and Wharton K B 1999 Nature 398 489 [2] Yang Q S, Liu C, Peng Z M and Zhu N Y 2009 Chin. Phys. Lett. 26 065204 [3] Dong Q L, Wang S J, Wang Z H, Zhao J, Wei Z Y and Zhang J 2009 Chin. Phys. Lett. 26 064214 [4] Last I and Jortner J 2001 Phys. Rev. Lett. 87 033401 [5] Grillon G, Balcou P and Chambaret J P et al 2002 Phys. Rev. Lett. 89 065005 [6] Lu H Y, Wang C, Chen G L, KimCheol J, Liu J S, Ni G Q, Li R X and Xu Z Zn 2009 Chin. Phys. B 18 1674 [7] Han J F, Yang C W, Miao J W, Lu J F, Liu M, Shi M G and Luo X B 2010 Eur. Phys. J. D 56 347 [8] Smith R A, Ditmire T and Tisch J W G 1998 Rev. Sci. Instrum. 69 3798 [9] Hagena O F 1992 Rev. Sci. Instrum. 63 2374 [10] Hagena O F and Obert W 1972 J. Chem. Phys. 56 1793 [11] Zheng L, Cheng W, Li S H, Liu B C, Ni G Q, Li R X and Xu Z Z 2006 Chin. Opt. Lett. 4 189 [12] Wang L, Wu Y C, Wang H B, Liu H J, Ge F F, Chen J B, Zheng Z J, Gu Y Q, Shi S T, Luo X B and Yang C W 2007 Acta Phys. Sin. 56 6918 [13] Ditmire T, Donnelly T, Rubenchik A M, Falcone R W and Perry M D 1996 Phys. Rev. A 53 3379
2010, Vol. 27 
