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81.
基于微分的思想,结合经典的双原子分子跃迁谱线表达式,提出了预言双原子分子P线系高激发振-转跃迁谱线的新解析物理公式.对于某分子电子体系的某一P支跃迁带,利用实验上获得的一组(15条)精确的跃迁谱线和该跃迁带对应的上下振动态的转动常数(Bυ',Bυ″)的精确数据,该公式不仅可以精确地重复已知的实验跃迁谱线,而且还能预测出实验上难以获得的更高激发态的跃迁谱线数据.利用该公式,研究了CO分子电子基态的(2,0)振-转跃迁带的<
关键词:
双原子分子
发射光谱
P线系')" href="#">P线系
CO 相似文献
82.
83.
Koichi Itoh Takeji Takui 《Proceedings of the Japan Academy. Series B, Physical and biological sciences》2004,80(2):29
This review paper deals with an overview of molecule-based magnetism as a rapidly developing interdisciplinary field, topological symmetry rule as the first principle of spin alignment in organic open-shell systems in the ground state, the proposal of organic through-bond 1D and 2D ferro- and superparamagnets and the detection of the first organic high-spin molecule, m-phenylenebis(phenylmethylene) in the quintet ground state (S = 2), followed by extended organic high-spin systems with π-conjugation such as aromatic hydrocarbons having S = 3, 4, 5. The paper also describes a theoretical approach to the understanding of electronic spin structures of organic high-spin molecules by invoking both Heisenberg and Hubbard model Hamiltonians, weakly interacting intramolecular high-spin systems from both experimental and theoretical sides, the spin density distribution of the first organic high-spin molecule in terms of electron- nuclear multiple resonance spectroscopy and the detection and characterization of ionic high-spin hydrocarbons, emphasizing the establishment of high spin chemistry underlying organic molecular magnetism. 相似文献
84.
85.
以共轭聚合物MEH—PPV和DD—PPV为研究对象,利用UV—Vis吸收光谱和荧光光谱,研究了它们在不同溶剂中及固体膜状态下的发光性质,探索了聚合物的微观结构与其发光性能之间的关系。结果表明。由于聚合物在固体膜状态下较溶液状态有紧密的排列,因此其UV—Vis吸收光谱和荧光光谱与溶液相比发生了较大的红移;相同主链的聚合物,侧链取代基的电负性减弱,可使UV—Vis吸收光谱和荧光光谱发生蓝移;在混合溶剂中,由于每种溶剂对聚合物的溶解能力不同,而使两种构象共存于溶液中,因此在不同配比的混合溶剂中,聚合物的吸收光谱发生相应的变化。 相似文献
86.
O.N. Ulenikov G.A. Onopenko T.V. Krapivina O.V. Gromova 《Journal of Molecular Spectroscopy》2005,230(1):78-86
A high-resolution Fourier transform spectrum of the D2MSe species (M = 82, 80, 78, 77, and 76) in the region 2300-2500 cm−1 was recorded for the first time and assigned. On the basis of these experimental data, rotation-vibration energies of the (1 1 0) and (0 1 1) vibrational states were fitted, and band centers, and rotational, centrifugal distortion, and resonance interaction parameters were determined for the main D280Se species. The obtained set of 32 fitted parameters reproduces the 647 rotation-vibration energies with a rms deviation of 0.00024 cm−1. The ν1 + ν2 and ν2 + ν3 bands of the other four isotopic species are analyzed as well. 相似文献
87.
Zheng Su 《Journal of Molecular Spectroscopy》2005,232(1):112-114
Rotational transitions of the propylene oxide-20Ne and propylene oxide-22Ne molecular adducts have been measured, in the frequency region from 4 to 18 GHz, using a pulsed jet Fourier Transform microwave spectrometer. The transition frequencies were used to refine the rotational and distortion spectroscopic constants obtained from the previous free jet millimetre wave measurements of the complex. No splittings due to the methyl group internal rotation were detected. 相似文献
88.
A. I. Jaman 《Pramana》2003,61(1):85-91
The construction of a millimeterwave spectrometer to study the pure rotational spectra of transient molecules in the gas phase
is presented. The spectrometer is a source-modulated system combined with a free space glass discharge cell. Millimeterwave
radiation has been produced using a frequency multiplier, the fundamental radiation source being klystrons. The spectrometer
has been used to study the millimeterwave spectrum of carbon monosulfide (CS) and fluorine cyanide (FCN) produced inside the
cell in a low pressure DC discharge of precursor gases. The quadrupole hyperfine structures of33S and14N nucleus of CS and FCN have been resolved, measured and analysed. 相似文献
89.
Alexander I. Nosich Elena I. Smotrova Svetlana V. Boriskina Trevor M. Benson Phillip Sewell 《Optical and Quantum Electronics》2007,39(15):1253-1272
Research into microdisk lasers demonstrates new achievements both in the technology and in the associated physical effects
and applications. Melting and rounding of the disk edge boosts the Q-factors due to improved surface smoothness. In-plane
cavity shape is widely used as a design instrument. Optimal shaping of pumped area lowers the threshold power. Photonic molecules
made of several microdisks as “photonic atoms” show lasing at several closely spaced frequencies. A microdisk with a single
quantum dot as an active region is considered as the most promising system for realisation of a single photon emitter necessary
for quantum computing. These new effects and devices can be simulated with accurate numerical techniques, developed recently
for “warm-cavity” linear modelling, that are able to bring a new vision of the physics of lasing. 相似文献
90.