Opacities of X1?+g;a?1?u;a1?gandb1u electronic statesfor nitrogen molecule

被引：4

作者：

Chen Chen ^{[1
]}

Zhao Guo-Peng ^{[2
]}

Qi Yue-Ping ^{[2
]}

Wu Yong ^{[3
,4
]}

Wang Jian-Guo ^{[1
,3
]}

机构：

[1] Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China

[2] Jiaxing Univ, Coll Data Sci, Jiaxing 314001, Peoples R China

[3] Inst Appl Phys & Computat Math, Natl Key Lab Computat Phys, Beijing 100088, Peoples R China

[4] Peking Univ, Coll Engn, Ctr Appl Phys & Technol, Beijing 100871, Peoples R China

来源：

ACTA PHYSICA SINICA | 2022年 / 71卷 / 14期

基金：

中国国家自然科学基金;

关键词：

nitrogen molecule; spectroscopic constants; opacities; ABSORPTION OSCILLATOR-STRENGTHS; TITANS UPPER-ATMOSPHERE; EXCITED-STATES; DIATOMIC-MOLECULES; N-2; BANDS; TRANSITIONS; SPECTRA; HITEMP;

D O I：

10.7498/aps.71.20220043

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Multi-reference configuration interaction (MRCI) approach with Davison size-extensivity correction (+Q) isemployed to calculate the potential curves and dipole moments of and electronic statesof N2. The spectroscopic constants and vibrational level spaceings are calculated and in excellent agreementwith the available theoretical results and experimental data. Based on the calculated molecular structureparameters, the opacities of N2 in a temperature range of 295-20000 K under a pressure of 100 atm (1 atm =1.01x105 Pa) are presented. The results demonstrate that the wavelength range of absorption cross sections areenlarged with the temperature increasing. Moreover, the cross sections are mainly dominated in the range ofultraviolet for the cases with temperature T < 5000 K, while the obvious population can be found in theinfrared ranges for the cases with temperature T > 10000 K due to the contribution of the excited states. Theinfluence of temperature on the opacities of nitrogen molecule are investigated in the present work, which canprovide theoretical and data support for researches of astrophysics and nuclear weapons

引用

页数：10

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