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A lepton-pair trigger was used to select a hadronic system in different flavour and colour states: properties of the transformation of this system into hadrons were measured in terms of charge flow, multiplicity distribution, and fragmentation function. It is observed that, while the effects of flavour are clearly seen, the colour degrees of freedom are not observed in the region of low pT.  相似文献   
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The amplitude modulation as well as demodulation of an electromagnetic wave in a transversely magnetised piezoelectric semiconductor plasma has been studied in different wave number regions over a wide range of electron cyclotron frequency.  相似文献   
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The parametric excitation of a helicon and an acoustic wave in a piezoelectric semiconductor-plasma in the presence of a strong magnetic field has been investigated using the coupled mode theory. The expressions for the threshold value of the electric field required for the onset of instability and for the growth rate well above the threshold have been obtained. It is observed that an acoustic wave of higher frequency and higher phase velocity than that of the pump wave cannot be excited. The analysis has been applied to the case of n type InSb sample where the threshold value of the electric field is found to be of the order 5.2 × 103 Vm?1 and the growth rate at an electric field 5.2 × 104 Vm?1 is of the order of 8.7 × 1010 sec?1.  相似文献   
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Information on the low-lying levels up to ~1.9 MeV excitation of the doubly odd nucleus50V has been obtained through the Ge (Li)-Ge (Li) coincidence study with the50Ti(p, nγ)50V reaction. Branching ratios have been measured and tentative spin-parity assignments have been made. A detailed comparison with other measurements reported recently has also been made. Using the lowest seniority wave functions with (f7/2) p 3 (f 7/2) n ?1 configuration, energy levels and electromagnetic properties have been calculated. These have been compared with the present and earlier experimental data.  相似文献   
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