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991.
P. Henrici M. Marchal E. T. Cranch H. Ziegler W. Saxer P. Grassmann Ch. Wehrli 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》1966,17(5):654-656
Ohne Zusammenfassung 相似文献
992.
E. Hlawka Ch. Binder P. Schmitt H. -Chr. Reiochel H. Mitsch F. Schweiger P. Gerl 《Monatshefte für Mathematik》1970,74(3):277-288
Ohne Zusammenfassung 相似文献
993.
The interaction energy of an O atom with a Ni cluster has been calculated by use of the extended Hückel theory; from these data a semiempirical model potential for O2 interacting with the Ni(001) surface is constructed. The results are compared with other theoretical and experimental information on the O/Ni and O2/Ni systems. 相似文献
994.
995.
996.
H. Bøggild E. Dahl-Jensen K.H. Hansen J.E. Hooper E. Lohse B.N. Mortensen R. Møller J.Harreskov Nielsen 《Nuclear Physics B》1974,72(2):221-227
19 GeV collisions in the CERN 2 meter hydrogen bubble chamber have been investigated for the number of prongs associated with an observed p, Λ, π? or Ks0 with specified cms momentum components. For p and Λ the associated charged particles have been classified according to their longitudinal direction relative to the observed p and Λ 相似文献
997.
Quadratic boolean equations with a unique solution are characterized. A linear-time algorithm is proposed to recognize them. 相似文献
998.
C. Jansson H. S. Hansen F. Yubero S. Tougaard 《Journal of Electron Spectroscopy and Related Phenomena》1992,60(4):301-319
Three tests have been performed to investigate whether cross sections determined experimentally from reflection electron energy loss spectroscopy (REELS) are more accurate than the Universal cross section for background correction of electron spectra. In the first test, the shape of background corrected spectra from a thin layer and from an infinitely thick layer of the same element were compared for the Ag3d, Au4d, and Yb4d peaks. It was found that the Universal cross section is more accurate than the experimentally determined REELS cross sections to determine consistently the peak shape of background corrected spectra. In the second test, the intensity ratio of the two components in the Au4d, Cu2p, Zn2p, and Yb4d doublets were compared to theoretical photoionization cross sections. For both the Universal and the REELS inelastic cross sections, the obtained intensity ratios agree well with theory. In the third test, we compare with theory the peak intensity ratios to Au4d of major peaks from Si, Cu, Ag, Yb, and Au obtained by using the Universal and the REELS cross sections for background correction. For the metals, the two cross sections give peak intensity ratios that are equally close to theory to within the expected uncertainties in the theoretical peak intensity ratios. However, for Ag with application of the Universal cross section the deviation from theory is slightly larger. For Si the REELS cross section is clearly most accurate. 相似文献
999.
Ch. Rösel P. David H. Folger H. Hänscheid J. Konijn C. T. A. M. de Laat C. Petitjean H. W. Reist F. Rissel L. A. Schaller L. Schellenberg W. Schrieder L. M. Simons A. K. Sinha A. Taal 《Zeitschrift für Physik A Hadrons and Nuclei》1991,340(2):199-208
The probabilities for non-radiative (n.r.) excitationsP n.r. in the muonic nuclides208Pb,232Th, and238U have been determined from (μ?,γγ)-measurements by comparing the intensities of muonic X-ray transitions in single and coincidence spectra. The value ofP n.r. (3p→1s), measured for the first time, is about 90% for the actinides232Th and238U, but only about 8% for208Pb. The value ofP n.r. (3d→1s) is found to be 10 % for233Th, 13% for238U, and about 4% for208Pb. For208Pb a vanishing strength of the n.r. decay of the 2p-level is found, while for232Th and for238U n.r. strengths of about 20% and 26%, respectively, are observed. By regarding two subcomplexes of the 2p→1s transitions leading to different mean excitation energies the n.r. transition probabilities were found to be different for238U only, 21.6% and 31.1.%, respectively. 相似文献
1000.