Please wait a minute...
Chinese Physics, 2006, Vol. 15(7): 1502-1510    DOI: 10.1088/1009-1963/15/7/021
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Theoretical simulations of emission spectra of Fe7+ and Fe8+

Zeng Jiao-Long (曾交龙)ab, Wang Yan-Gui (王雁桂)b, Zhao Gang (赵刚)a, Yuan Jian-Min (袁建民)ab
a National Astronomical Observatories,Chinese Academy of Sciences, Beijing 100012, China; b Department of Applied Physics, National University of Defense Technology, Changsha 410073, China
Abstract  The energy levels, oscillator strengths, spontaneous radiative decay rates, and electron impact collision strengths are calculated for Fe VIII and Fe IX using the recently developed flexible atomic code (FAC). These atomic data are used to analyse the emission spectra of both laboratory and astrophysical plasmas. The nf--3d emission lines have been simulated for Fe VIII and Fe IX in a wavelength range of 6--14 nm. For Fe VIII, the predicted relative intensities of lines are insensitive to temperature. For Fe IX, however, the intensity ratios are very sensitive to temperature, implying that the information of temperature in the experiment can be inferred. Detailed line analyses have also been carried out in a wavelength range of 60--80 nm for Fe VIII, where the solar ultraviolet measurements of emitted radiation spectrometer records a large number of spectra. More lines can be identified with the aid of present atomic data. A complete dataset is available electronically from http://www.astrnomy.csdb.cn/EIE/.
Keywords:  emission spectrum      Fe VIII and Fe IX      electron impact excitation  
Received:  13 June 2005      Revised:  03 April 2006      Accepted manuscript online: 
PACS:  32.50.+d (Fluorescence, phosphorescence (including quenching))  
  31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)  
  32.70.Cs (Oscillator strengths, lifetimes, transition moments)  
  32.70.Fw (Absolute and relative intensities)  
  34.80.Dp (Atomic excitation and ionization)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10204024, 10373014, 10433010 and 10474138).

Cite this article: 

Zeng Jiao-Long (曾交龙), Wang Yan-Gui (王雁桂), Zhao Gang (赵刚), Yuan Jian-Min (袁建民) Theoretical simulations of emission spectra of Fe7+ and Fe8+ 2006 Chinese Physics 15 1502

[1] Electric and plasma characteristics of RF discharge plasma actuation under varying pressures
Huimin Song(宋慧敏), Min Jia(贾敏), Di Jin(金迪), Wei Cui(崔巍), Yun Wu(吴云). Chin. Phys. B, 2016, 25(3): 035204.
[2] Electron impact excitation of helium atom
Han Xiao-Ying (韩小英), Zeng De-Ling (曾德灵), Gao Xiang (高翔), Li Jia-Ming (李家明). Chin. Phys. B, 2015, 24(8): 083103.
[3] Resonance enhanced electron impact excitation for P-like Cu XV
Li Shuang (李双), Yan Jun (颜君), Li Chuan-Ying (李传莹), Huang Min (黄敏), Chen Chong-Yang (陈重阳). Chin. Phys. B, 2015, 24(11): 113401.
[4] Characteristics of a large gap uniform discharge excited by DC voltage at atmospheric pressure
Li Xue-Chen (李雪辰), Bao Wen-Ting (鲍文婷), Jia Peng-Ying (贾鹏英), Zhao Huan-Huan (赵欢欢), Di Cong (狄聪), Chen Jun-Ying (陈俊英). Chin. Phys. B, 2014, 23(9): 095202.
[5] Production of CH (A2Δ) by multi-photon dissociation of (CH3)2CO, CH3NO2, CH2Br2, and CHBr3 at 213 nm
Li Sheng-Qiang (李胜强), Xu Liang (许亮), Chen Yang-Qin (陈扬骎), Deng Lian-Zhong (邓联忠), Yin Jian-Ping (印建平). Chin. Phys. B, 2014, 23(8): 083701.
[6] Mn overlayers on PbTe (111): Substitutional adsorption and interface formation
Wu Hai-Fei (吴海飞), Zhang Han-Jie (张寒洁), Lu Yun-Hao (陆赟豪), Yan Yong-Hong (鄢永红), Li Hai-Yang (李海洋), Bao Shi-Ning (鲍世宁), He Pi-Mo (何丕模). Chin. Phys. B, 2014, 23(12): 127901.
[7] Two-photon emission in coupled biexciton quantum dot–cavity system: Phonon-assisted model
Peng Yi-Wei (彭益炜), Yu Zhong-Yuan (俞重远), Liu Yu-Min (刘玉敏), Wu Tie-Sheng (伍铁生), Zhang Wen (张文). Chin. Phys. B, 2014, 23(12): 124204.
[8] Electron impact excitation of Ni-like gold studied by Dirac R-matrix method
Fan Quan-Ping (范全平), Wang Wen-Hui (汪文慧), Hu Feng (胡峰), Cao Lei-Feng (曹磊峰), Zhang Qiang-Qiang (张强强), Liu Yu-Wei (刘钰薇), Jiang Gang (蒋刚). Chin. Phys. B, 2014, 23(11): 113401.
[9] Emission spectrum of a harmonically trapped Λ-type three-level atom
Guo Hong (郭红), Tang Pei (汤佩). Chin. Phys. B, 2013, 22(5): 054204.
[10] Effect of atomic initial phase difference on spontaneous emission of an atom embedded in photonic crystal
Zhang Bing(张冰), Sun Xiu-Dong(孙秀冬), and Jiang Xiang-Qian(姜向前). Chin. Phys. B, 2010, 19(8): 083201.
[11] Fluorescence properties in a single driven four-level atomic system
Jiang Xiang-Qian(姜向前), Lü Zhi-Wei(吕志伟), Zhang Bing(张冰), and Sun Xiu-Dong(孙秀冬). Chin. Phys. B, 2010, 19(11): 113202.
[12] Effect of cavity dissipation on the emission spectrum of an atom interacting with a field in the dispersive approximation
Wang Hai-Jun(王海军) and Gao Yun-Feng(高云峰) . Chin. Phys. B, 2010, 19(1): 014209.
[13] Atomic emission spectra and field non-classical properties
Tang Pei(汤佩) and Guo Hong(郭红). Chin. Phys. B, 2009, 18(8): 3457-3465.
[14] Formation mechanism of incubation layers in the initial stage of microcrystalline silicon growth by PECVD
Hou Guo-Fu(侯国付), Xue Jun-Ming(薛俊明), Guo Qun-Chao(郭群超), Sun Jian(孙建), Zhao Ying(赵颖), Geng Xin-Hua(耿新华), and Li Yi-Gang(李乙钢). Chin. Phys. B, 2007, 16(2): 553-557.
[15] Spontaneous emission spectrum of a three-level atom embedded in photonic crystal
Liu Guo-Qiang (刘国强), Wang Jian (王健), Zhang Han-Zhuang (张汉壮). Chin. Phys. B, 2005, 14(1): 102-109.
No Suggested Reading articles found!