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961.
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964.
Max Maier 《Applied Physics A: Materials Science & Processing》1976,11(3):209-231
The applications of stimulated Raman scattering reviewed in this paper include: determination of spontaneous Raman parameters
and nonlinear susceptibilities by gain measurements and coherent anti-Stokes Raman spectroscopy, excitation of molecular vibrations
and lattice waves and measurement of their relaxation times, generation of intense tunable light in the infrared region of
the spectrum. The main results of the theory of stimulated Raman scattering relevant to the understanding of these applications
are discussed. 相似文献
965.
The quenching factors (Ham reduction factors) of the Г8-(e+t) Jahn-Teller system with arbitrary coupling parameters D? and Dτ are presented. The calculations are based on a group-theoretical approach combined with the application of a canonical transformation which leads to 2 different diagonalization procedures for the weak and intermediate as well as for the intermediate and strong coupling case. The results are accurate in the whole coupling range. 相似文献
966.
967.
The threshold intensity of stimulated Raman scattering along the c-axis in α-quartz was measured for the 128-cm-1 optical lattice vibration as a function of pump laser polarization at T = 10 K. In a right-handed, optically active quartz crystal the Raman threshold intensity for left-handed, circularly polarized pump light was lower by a factor of about 1.5 than for right-handed, circularly polarized light. The difference in threshold intensity is discussed in terms of Raman optical activity. 相似文献
968.
Human calcitonin. I. Isolation and characterization 总被引:1,自引:0,他引:1
B Riniker R Neher R Maier F W Kahnt P G Byfield T V Gudmundsson L Galante I MacIntyre 《Helvetica chimica acta》1968,51(7):1738-1742
Two highly active calcitonin peptides, M with 32 amino acids, and D a dimer of M, were isolated from a large human mediastinal C cell tumour. D can easily be transformed into M by the action of 1N ammonia; D and M afford two different sulphoxides, but all four peptides yield the same product upon oxidation with performic acid. Both D and M have a potency of about 120 MRC units/mg dry weight; their sulphoxides, by contrast, are almost inactive. Tryptic digestion of M produces an N-terminal octadecapeptide (TrI) and a C-terminal tetradecapeptide (TrII), the latter being also obtained from D. Amino acid analysis and other analytical data are presented. The structure of the human calcitonin peptides D and M is thus very different from that of porcine α-thyrocalcitonin. 相似文献
969.
The energy relaxation of the lowest vibrational level (υ = 1) of liquid oxygen in the electronic ground state was investigated within a wide temperature range (53.4 K ? T ? 96 K). The relaxation time exhibits a peak value of τ′ ≈ 3.1 ms around 65 K and is shorter at lower and higher temperatures. The observed temperature behavior is discussed in view of theoretical models of energy relaxation in liquids. 相似文献
970.