The Institute of Physics ( IOP ) по журналам "Institute of Physics"
Отображаемые элементы 120 из 2524

(20000701)Properties of heavy hypernuclei are studied in the context of a chiral Lagrangian which successfully describes ordinary nuclei. 0 mixing arises from nondiagonal vertices in flavour space induced by the vector mesons and ...

(19950101)11Li12C scattering is described as a fourbody problem. The succession of approximations required to obtain the simplified approach of Yabana et al(1992) is examined in detail. We found that whereas their simple model is ...

(19910901)Cross sections of the nuclear reactions 120Sn(n, alpha )117Cd, 54Cr(n, alpha )51Ti, 58Ni(n,p)58m+gCo and 29Si(n,p)29Al induced by 14 MeV neutrons are measured in the laboratory and are found to be in good agreement with ...

(19930501)12C+12C resonances were successfully classified in the past using both dipole and quadrupole vibrationrotation based phenomenological models. The last such analysis was performed in 1983. Since then, more than 20 new ...

(19940201)The activation cross section and isomeric ratios for neutron capture are measured at an energy of 14.5 MeV for 181Ta, relative to sigma (181Ta(n,p)181Hf)=2.5 mb. Gammaray spectra of the product nuclei were measured with ...

(19930401)The author investigates the question of whether or not the qdeformation of the U(3) contains/implies O(3) contains/implies O(2) dynamical symmetry improves the description of some 16O+ alpha cluster bands in 20Ne. The ...

(19900501)Angular distributions of neutrons from the 208Pb( pi +or, pi +or'n) reaction near the giantresonance region have been measured at Tpi =180 MeV. The neutrons arising from pi  inelastic scattering show evidence of peaking ...

(19940101)An analysis of 47 hours of data, collected by the Gulmarg gammaray telescope during the period 27 September30 October 1989, indicates the absence of a statistically significant DC signal from the Xray binary pulsar, ...

(19910901)The authors present a variational calculation for the hypernuclei 9Be and 6He in the alpha alpha Lambda and alpha Lambda Lambda models, respectively, using a basis of harmonic oscillator wavefunctions. Some of their ...

(19990501)We investigate the RPA normalmode coordinates in the pairingplusquadrupole model, with an eye on simplifying the application of large amplitude collective motion techniques. At the HartreeBogoliubov minimum, the RPA ...

(19980301)From the secondary interactions of projectile fragments (PFs) of charges Z > 30 from a beam at 10.6 A GeV from Brookhaven National Laboratory, in emulsion, we observed an increase of more than 51% in secondary interactions ...

(19980301)We introduce a method based on the finitesize scaling assumption which allows us to determine numerically the critical point and critical exponents related to observables in an infinite system starting from the knowledge ...

(19910101)On the basis of a threedimensional Monte Carlo simulation procedure, it is shown that the selection efficiency for EAS initiated by different types of primary nuclei do not essentially depend on the adopted superposition ...

(19911201)The extension of AMS techniques (accelerator mass spectrometry) to the heavy elements is considered, particularly with reference to the use of small tandem accelerators (VT<3 MV), and a comparison with thermal ionization ...

(19911201)Three experiments with accelerator mass spectrometry (AMS) are described. (1) The cross section of the reaction 60N(n,2n)59Ni with 14.8 MeV neutrons was measured with AMS to be 410+or100 mb in agreement with the predictions ...

(19911201)The use of AMS (accelerator mass spectrometry) to measure nuclear quantities is reviewed. Particular emphasis is put on the discussion of halflife measurements and searches for hypothetical particles.

(19900801)The potentiality of the gammax detector in the accurate determination of PK from multiple gamma and K Xray summing is investigated. Utilising this method, PK for the 437.0 keV state of 133Cs in the decay of 133Ba (10.5 ...

(19900401)In a very simple approach the authors study the nucleation process for an infinite system consisting of classical relativistic fermions interacting with a classical scalar field. They examine the temperature and density ...

(20000601)We perform a threedimensional (3D) reduction of the twofermion BetheSalpeter equation based on Sazdjian's explicitly covariant propagator, combined with a covariant substitute of the projector on the positiveenergy free ...

(19931201)The energy dependence of the fission cross section for 239Pu(n,f) and 241Am(n,f) is analysed in terms of the doublehumped fission barrier model to deduce the barrier heights. Good fits were obtained by assuming the first ...
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