The relation between composition in laser absorption region and ambient pressure
Yang Bo(杨波)b), Zhu Jin-Rong(朱金荣)a)b), Yang Yan-Nan(杨雁南)b)c), Shen Zhong-Hua(沈中华)b), Lu Jian(陆建)b), and Ni Xiao-Wu(倪晓武)b)†
a College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China; bDepartment of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China; c College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Abstract In this paper, the compositions in a laser absorption region can be determined from the experiment of laser impulse coupling. When the ambient pressure varies from 9325 to 33325Pa, the compositions are vapour and plasma; while from 35325 to 101325Pa, they are ambient air and plasma. By analysing the relation between the degree of compression and the ambient pressure, the compositions can be determined and the variation of plasma can be explained.
Accepted manuscript online:
PACS:
52.38.Dx
(Laser light absorption in plasmas (collisional, parametric, etc.))
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
Fund: Project supported by the National
Science Foundation of China (Grant Nos 60578015 and 60208004) and
the Specialized Research Fund for the Doctoral Program of Higher
Education of China (Grant No 20050288025).
Cite this article:
Yang Bo(杨波), Zhu Jin-Rong(朱金荣), Yang Yan-Nan(杨雁南), Shen Zhong-Hua(沈中华), Lu Jian(陆建), and Ni Xiao-Wu(倪晓武) The relation between composition in laser absorption region and ambient pressure 2008 Chin. Phys. B 17 199
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