Browsing by Author "Allie, Muhammed Saalih"

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    Differential cross section for neutron-proton radiative capture at En=63.4 MeV
    (1997) Allie, Muhammed Saalih; Brooks, Frank
    The angular distribution of photons from n-p radiative capture of 63.4 MeV neutrons has been measured using a new technique in which both the photon and the deuteron were detected simultaneously and the deuteron identified using pulse shape discrimination. Data taken at eight n-ϒ angles (45°-150°) were transformed to deuteron photodisintegration cross sections at the equivalent laboratory energy, Eᵧ = 33.9 MeV. The data were analysed in combination with independent measurements of the 0° and 180° cross sections. Legendre polynomial coefficients obtained from the analysis are consistent with other measurements in this energy range as well as with values reported from global fits. The measurements deviate marginally from predictions based on potential model calculations using the Bonn r-space and Paris potentials.
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    Neutron spectrum from 252Cf spontaneous fission
    (1984) Allie, Muhammed Saalih; Brooks, F D
    Measurements have been made of the neutron spectrum from the spontaneous fission of 252Cf in the restframe of the fragment by simultaneous observation of the neutron time-of-flight and the fragment velocity. The fragments were detected by means of thin film plastic scintillators in which the scintillation pulse-height response was verified to be a linear function of fragment velocity. The measurements of the neutron spectrum in the restframe of the fragment are compared with previous work and are found to deviate significantly from the predicted observations of the simple form of the evaporation model.