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991.
R. Harris B. G. Mulimani M. J. Zuckermann 《Zeitschrift für Physik B Condensed Matter》1975,19(1):269-276
The scattering formalism of Blaker and Harris which is appropriate to potential scattering in dilute cubic alloys is modified to include the spin-dependent scattering. An expression for the total T-matrix which describes the ordinary and exchange scattering by magnetic impurities is obtained. The new formalism is compared with other work in the area and is used to discuss the dHvA data for Kondo alloys based on Cu and Au. 相似文献
992.
F. Lieneweg Fr. L. Hahn S. Gilde K. Bennewitz E. Kellner H. C. Lockwood P. Wulff W. Kordatzki W. Ehrenberg G. A. Bravo D. N. Mehta S. K. Kulkarni Jatkar O. Dony-Hénault H. Vogels B. D. Hartong S. A. Iofa B. I. Petrow T. C. Hernden H. A. Webb K. Schwabe J. H. Highberger D. Burton J. Bateson E. L. Wallace L. R. Parks C. R. Barnes G. R. Robertson I. Harris E. L. Rubin W. J. Shutt R. E. Haward Ph. T. Kerridae und H. A. Bromley 《Fresenius' Journal of Analytical Chemistry》1937,108(7-8):269-279
Ohne Zusammenfassung 相似文献
993.
Second-harmonic tomography of tissues 总被引:4,自引:0,他引:4
Guo Y Ho PP Savage H Harris D Sacks P Schantz S Liu F Zhadin N Alfano RR 《Optics letters》1997,22(17):1323-1325
A novel noninvasive second-harmonic-generation tomographic method of mapping the structure of animal tissues by use of 100-fs laser pulses at 625nm is described. Subsurface structures were measured with this approach, which is potentially a symmetry-sensitive tool for optical histological reconstruction. 相似文献
994.
We have demonstrated real-time decoding of 20-bit biphase-coded address header pulses, using stimulated photon echoes in a phase-matched crossed-beam configuration. This decoding is one of the functions required for coherent transient optical data routing, packet switching, and processing. The active medium used was single-crystal Y(2)SiO(5) doped with Er(3+), which provides an operating wavelength of 1536 nm. 相似文献
995.
Level and phase of the (2f1-f2)-difference tone were measured as a function of primary-tone level using the psychoacoustical method of cancellation and the objective method of emission cancellation for four frequency separations of f1 = 1620 Hz and f2 in four subjects. Differences between hearing- and emission-cancellation levels ranged from 60-33 dB as delta f = f2-f1 increased from 180 to 432 Hz. For smaller separations of the primaries, phase changes for emission cancellation covered a wide range and had sharp "steps," whereas for hearing cancellation, the phase varied only slightly. With wider separations of the primaries, the phase became more varied for hearing cancellation and more homogeneous for emission cancellation. Both emission- and hearing-cancellation level functions were nonmonotonic as a function of constant SL1 and varied SL2. Remarkable phase shifts always appeared near minima in level at all separations of the primaries for emission cancellation. Four sources may be contributing to the differences in results: (a) the frequency-dependent attenuation of the middle-ear transfer function, (b) the frequency-dependent mismatch of the acoustical impedances at the eardrum, (c) the frequency dependence of the microphone's sensitivity mounted within the probe, and (d) the different reaction of active nonlinear cochlear processes on the hearing- and emission-cancellation tones. 相似文献
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