Balmer H α, H β and H γ Spectral Lines Intensities in High-Power RF Hydrogen Plasmas

WANG Songbai(王松柏); LEI Guangjiu(雷光玖); LIU Dongping(刘东平); YANG Size(杨思泽)

doi:10.1088/1009-0630/16/3/08

Plasma Science and Technology > 2014 > 16(3): 219-222. > DOI: 10.1088/1009-0630/16/3/08

WANG Songbai(王松柏), LEI Guangjiu(雷光玖), LIU Dongping(刘东平), YANG Size(杨思泽). Balmer H_α, H _β and H _γ Spectral Lines Intensities in High-Power RF Hydrogen Plasmas[J]. Plasma Science and Technology, 2014, 16(3): 219-222. DOI: 10.1088/1009-0630/16/3/08

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Balmer H_α, H _β and H _γ Spectral Lines Intensities in High-Power RF Hydrogen Plasmas

1 College of Physics and Information Engineering, Fuzhou University, Fuzhou 350108, China 2 Southwestern Institute of Physics, Chengdu 610041, China 3 School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China

Funds: supported by the National Magnetic Confinement Fusion Science Program of China (Nos.2011GB108011 and 2010GB103001) and the Major International (Regional) Project Cooperation and Exchanges (No.11320101005)

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Received Date: June 26, 2013

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Abstract

H _α (Balmer-alpha), H _β (Balmer-beta) and H_γ (Balmer-gamma) spectral line inten- sities in atomic hydrogen plasma are investigated by using a high-power RF source. The intensities of the H _α, H _β and H_γ spectral lines are detected by increasing the input power (0-6 kW) of ICPs (inductively coupled plasmas). With the increase of net input power, the intensity of H _α im- proves rapidly (0-2 kW), and then reaches its dynamic equilibrium; the intensities of H _β can be divided into three processes: obvious increase (0-2 kW), rapid increase (2-4 kW), almost constant (4-6 kW); while the intensities of H γ increase very slowly. The energy levels of the excited hydro- gen atoms and the splitting energy levels produced by an obvious Stark effect play an important role in the results.

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