共查询到19条相似文献,搜索用时 62 毫秒
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本文主要研究了CO2的三种同位素分子16O12C16O , 16O12C17O ,16O13C17O 70 K~6000 K的总内配分函数 (TIPS)。在总内配分函数的计算中, 转动配分函数的计算采用了McDowell的解析式法, 振动配分函数则采用了简谐振动近似(HOA)获得。最后通过将两配分函数乘积近似计算得出TIPS, 并将其70~3000 K的数据和HITRAN04数据进行了比较, 发现所得结果和数据库符合的较好, 且其误差可以近似看成一条直线。并通过对误差的拟合修订了高温区(3000~6000 K)的计算数据, 给出了在高温下的较为准确的TIPS值。 相似文献
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采用内腔式饱和吸收技术获得 Lam b 凹陷,使 C O 激光磁共振谱仪的灵敏度及分辨率大大提高.利用该技术对自然丰度下15 N 16 O 的 X2Π( υ= 1) ← X2Π( υ= 0) 塞曼跃迁进行测量,实现了包括Λ双分裂在内的各种精细结构的谱分辨.结合已发表的15 N O 同位素分子光谱实验数据进行分析计算,拟合得到迄今最完备、最精确的各相关同位素分子15 N m O( m = 16 —18)的结构参数. 相似文献
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激光磁共振方法研究异戊二烯与NOx的化学反应 总被引:2,自引:2,他引:0
以激光磁共振为手段分别在紫外照射和火花放电条件下观测到异戊二烯与NO/NO2的反应,所获得的信息对了解大气化学反应及光化学烟雾有着重要的意义。 相似文献
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用激光磁共振方法研究了氮氧化物与腐殖酸的反应.腐殖酸是一种重要的地表环境物质,氮氧化物是大气中主要的污染源之一,研究它们之间的反应从而了解地表环境物质与大气环境物质的相互作用,表明在一定程度上地表环境能吸收掉一些污染.NO2与胡敏酸反应被消除85%,NO2与富里酸反应被消除90%.NO与胡敏酸反应被消除30%,NO与富里酸反应被消除33%.腐殖酸在消除氮氧化物的同时也将被氧化和硝化形成有机矿物肥料,这些为使用地表环境物质治理工业污染废气提供了有用的数据. 相似文献
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C. Amiot 《Journal of Molecular Spectroscopy》1976,59(2):191-208
The infrared Fourier spectrum of 63 bands of 14N15N16O and of 69 bands of 15N14N16O have been measured and analyzed from 1750 to 6000 cm?1. The rotational constants are given for 20 Σ, 11 Π, 7 Δ, and 3 Φ levels of 14N15N16O and 21 Σ, 14 Π, 8 Δ, and 5 Φ levels of 15N14N16O. Two bands of the previously unreported isotopic species 14N15N17O and 15N14N17O have been observed. Several local resonances are present in the levels 311c0 and 0401 in 14N15N16O; 1001, 0600, 111d1, 1201 in 15N14N16O. In both isotopes two “forbidden” Δ-Σ transitions are observed: 042c0-0000 and 122c0-0000. 相似文献
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The (1-0), (2-0), and (3-0) transitions of 15N16O and 15N18O are investigated. The wavenumbers of the rotation-vibration lines are reported for the overtone bands and the (1-0) subband. It is shown that in the data reduction it is advantageous to calculate first merged spectroscopic constants ignoring the Λ-type doubling. The vibrational constants ωe, ωexe, ωeye and the vibrational dependence of the rotational constants are determined. The study of 15N18O allows the determination of the equilibrium values of the centrifugal distortion correction ADe to the spin-orbit constant and of the spin-rotation constant γe from the isotopic invariance of the ratios and . It is found that and . 相似文献
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The wavenumbers of the rotation-vibration lines of 14N16O are reported for the (2-0) and (3-0) bands. The full set of spectroscopic constants for the three bands (1-0), (2-0), and (3-0) has been determined with the method developed by Albritton, Schmeltekopf, and Zare for merging the results of separate least-squares fits. The vibrational constants ωe, ωexe, ωeye, and the vibrational dependence of the rotational constants have been deduced. The apparent spin-orbit constant and its centrifugal correction (including the spin-rotation constant) have a vibrational dependence of the following form: and ; the values of the constants in these two equations have been determined. 相似文献
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K-shell ionization induced by oxygen isotopes has been studied for several elements ranging from sulphur to bromine. Ionization cross sections and Kα/Kβ intensity ratios are compared at equal projectile velocities. 相似文献
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C. Amiot 《Journal of Molecular Spectroscopy》1976,59(3):380-395
The infrared spectrum of 64 bands of the isotopic species 15N216O of nitrous oxide and of 37 bands of 14N218O have been analyzed. The studied spectral range extends from 1750 to 6000 cm?1 for 15N216O and from 1750 to 3100 cm?1 for 14N218O. The effective rotational constants are given for 44 levels of 15N216O comprising 21Σ, 12Π, 7Δ, 4Φ levels and also for 29 levels of 14N218O comprising 13Σ, 7Π, 6Δ, 3Φ levels. Thirty-one levels (20Σ, 11Π) of the following isotopic species have also been studied: 15N217O, 15N218O, 14N15N18O, 15N14N18O, 14N217O. In 15N216O a local Coriolis resonance affects the 1001 level. The “forbidden” Δ-Σ transition 122c0-0000 is observed in the spectrum of 15N216O. The equilibrium values for the internuclear distances have been calculated. 相似文献
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D. Evers C. Ley E. Spindler W. Assmann K. Rudolph P. Konrad P. Sperr 《Nuclear Physics A》1977,275(2):363-380
The (3He, n) reaction on 16O and 18O has been used to study low-spin states in 18Ne and 20Ne up to Ex ≈ 8 and 20 MeV, respectively. The measured neutron angular distributions have been analysed using DWBA. By a comparison with shell-model calculations in the (s, d) shell it is found that most of the two-proton transfer strength can be explained within that shell. Important contributions, however, from the (f, p) shell in low-lying negative parity states are also present. 相似文献
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C.K. Gelbke G. Baur R. Bock P. Braun-Munzinger W. Grochulski H.L. Harney R. Stock 《Nuclear Physics A》1974,219(2):253-265
Angular distributions and an excitation function of the reaction 17O(16O, 16O)17O1 () have been measured. The observed fine structure of the angular distributions cannot be explained by the dominating transfer process alone. An explanation is given in terms of interference between one-neutron transfer and inelastic scattering. 相似文献
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S. Burzynski M. Baumgartner H.P. Gubler J. Jourdan H.O. Meyer G.R. Plattner H.W. Roser I. Sick K.-H. Möbius 《Nuclear Physics A》1983,399(1):230-240
We have measured 16O17O elastic cross sections at 22 MeV between 65°–140° to ± 1 %. The observed oscillatory interference between Coulomb scattering and the neutron transfer process is analyzed using exact finite-range DWBA. A model-independent value of is obtained for the coupling constant of the 1d neutron in 17O. We also present an analysis of data on magnetic electron scattering from 17O, which yields precise information on the magnitude and the radial shape of the neutron bound-state wave function. With this we relate the coupling constant to the spectroscopic factor and find S = 1.04 ± 0.11. We show that the magnetic electron scattering data alone yield S = 1.04 ± 0.10. Combining these results with earlier work we recommend and S = 1.03 ± 0.07 as best values. This spectroscopic strength corresponds to (91 ± 7) % of the full single-particle value. 相似文献