0000000000376755

AUTHOR

G. P. Tiourin

showing 3 related works from this author

Neutron and fragment yields in proton-induced fission of 238U at intermediate energies

2001

The primary fission fragment mass and kinetic energy distributions, and neutron multiplicities as function of fragment mass have been measured in the proton-induced fission of 238 U at energies Ep ¼ 20, 35, 50 and 60 MeV using time-of-flight technique. Pre-scission and post-scission neutron multiplicities have been extracted from double differential distributions. The fragment mass dependence of the post-scission neutron multiplicities reveals the gross nuclear shell structure effect even at the higher proton energies we measured. The yields ofneutron-rich fission products in the fission of 238 U by 25 MeV protons were measured using an ion guide-based isotope separator technique. The resul…

PhysicsNuclear and High Energy PhysicsFission productsCold fissionCluster decayFissionNeutron emissionIsotopes of samariumNuclear TheoryFission product yieldNuclear physicsNeutronNuclear ExperimentInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

Fission product yields at intermediate energy

1998

The results of experimental and theoretical studies of fission product yields in proton-induced fission of 238U are presented. The yields of neutron-rich Ni, Cu, Zn, Ga and Ge—isotopes were measured by 25 MeV protons and the ion guide-based isotope separator technique. The pre-neutron emission fragment mass distributions were measured by protons at energies Ep=20, 35, 50 and 60 MeV using time-of-flight method. The results indicate enhancement for superasymmetric mass division at intermediate excitation energy of the fissioning nucleus. A model calculation of fission products yields for fission of 238U by protons and neutrons is presented which predicts the formation cross sections for neutr…

Nuclear physicsNuclear fission productFission productsCold fissionCluster decayFissionChemistryNeutron emissionIsotopes of samariumNuclear TheoryFission product yieldNuclear ExperimentAIP Conference Proceedings
researchProduct

Pre- and post-scission neutron emission in the reaction180Hf(40Ar, fission) atE lab=216 MeV

1996

Neutron and fission fragment spectra following the180Hf(40Ar,f) reaction atE lab=216MeV were measured. The following neutron total, pre- and post-scission multiplicities were extracted:M tot =7.2±1.3,M pre =2.7±0.9,M post =4.5±0.9. The average temperature parameters of the neutron spectra areT pre=(1.63±0.16) MeV andT post=(1.14±0.26)MeV. The mean total kinetic energy of the fission fragments is TKE=(166±10) MeV and the measured width is σTKE=17.3MeV. The width of the fragment mass distribution is σ A =18.3u. The same reaction was analyzed using a modified statistical code which includes nuclear dissipation effects and particle and γ-ray emission in the equilibrium compound nucleus state an…

PhysicsNuclear physicsNuclear and High Energy PhysicsCluster decayFissionNeutron emissionNuclear TheoryNeutron cross sectionNuclear fusionNeutronNuclear ExperimentKinetic energyNeutron temperatureZeitschrift für Physik A Hadrons and Nuclei
researchProduct