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The reactions Λp → Λp, → Σ±pπ?, → Λpπ+π? and → Σ0p have been studied in the SLAC 82 inch bubble chamber for incident Λ particles in the momentum range 1–10 GeV/c. The incident Λ flux was produced by the exposure of a platinum target mounted inside the chamber to a 12 GeV K? beam. A total of 992 events have been analyzed. The reactions are found to be qualitatively similar to corresponding nucleon-nucleon reactions. In particular, the slope parameter B in the elastic cross section dσ/dt = AeBt has been determined as a function of incident momentum and found to be consistent with that for proton-proton elastic scattering. Angular distributions for the inelastic channels are compared with those of similar nucleon-nucleon reactions, and predictions of relevant exchange models.  相似文献   
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Ferromagnetic resonance measurements were performed in single crystals of -iron in the form of thin platelets. These platelets were grown from the vapour phase; their thickness was several microns. The frequency used in the measurements was in the region of 20 to 72 GHz and the samples were statically magnetized parallel to the plane of the platelet. By comparing the line-widths obtained from measurements with a macroscopic theory of the line-shape the values of the frequency-independent Landau-Lific damping constant (=4·2×107 rad/sec) and surface anisotropyK s = 0·03 erg/cm2) were evaluated.The first two authors are greatly indebted for hospitality to the Physics Department of the University of North Carolina, Chapel Hill, where these measurements were begun.  相似文献   
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