In this work, an experimental study of $^{89}Y$ the photodisintegration is performed. Absolute yields and average cross sections weighted by the bremsstrahlung were measured for photoneutron reactions on $^{89}Y$ at the upper limit of 55 MeV brake photons. The measured yields and average cross sections weighted by the bremsstrahlung are compared with the yields of reactions calculated from...
The flux-weighted average cross-sections <σ(E)> and the isomeric yield ratios IR for the 93Nb(γ,4n)89m,gNb and 93Nb(γ,5n)88m,gNb reactions were studied. The 93Nb targets were irradiated with the bremsstrahlung beam for the end-point bremsstrahlung energies Eγmax = 36-91 MeV using the electron linac LUE-40 RDC “Accelerator” NSC KIPT. The induced γ-activities of the samples were measured using a...
The photonuclear reactions 93Nb(γ,n)92mNb and 93Nb(γ,3n)90tNb were investigated by the γ-activation method using a bremsstrahlung beam generated from an electron linac LUE-40 RDC “Accelerator” NSC KIPT. The flux of bremsstrahlung γ-quanta was controlled using a monitor target from natural molybdenum and the 100Mo(γ,n)99Mo reaction cross-section values.
The experimental cross-sections <σ(E)>,...
Nuclear reactions with various bombarding particles serve as an important source of information both on the mechanisms of nuclear reactions and on the properties of the excited states of atomic nuclei.
This work presents work results of investigation of the isomeric yield ratios $Y_{\rm m}/ Y_{\rm g}$ of the $^{86}\rm S(\gamma, n)^{85\rm m,g}\rm Sr$, $^{86}\rm Sr(n, 2n)^{85m,g}\rm Sr$,...
Nickel is a part of most stainless steels, therefore, the cross section for the helium production on the nuclei of the nickel isotopes is significant for evaluation of radiation damages in structural materials of reactors. 58Ni is the main isotope in the natural mixture (58Ni 68.27%, 60Ni 26.10%, 61Ni 1.13%, 62Ni 3.59%, 64Ni 0.91%); therefore, its contribution is one of the determining...
Investigation of energy dependence of light charged particles emission from (p,x) reaction with 120Sn nucleus
D. Alimov1, Zh. Mukan1,2, M. Nassurlla1, A. Pan1, B.M. Sadykov1, T.K. Zholdybayev1,2
1 Institute of Nuclear Physics, Kazakhstan;
2 Gumilev Eurasian National University, Kazakhstan;
2 al Farabi Kazakh National University, Kazakhstan;
zhuldiz_mukan@mail.ru
The...
Experimental studies and theoretical calculations of photoneutron reactions on light palladium isotopes $^{102}Pd$ and $^{104}Pd$ were performed. The target from a natural mixture of palladium isotopes was irradiated with brake γ-quanta on the RM-55 electron accelerator at an electron energy of 55 MeV. Absolute yields of photonuclear reactions on $^{102}Pd$ and $^{104}Pd$ isotopes with up to...
Today, one of the fundamental problems in physics of nuclear reactions is a quantitative description of the elements formation in the Universe. These studies lead to an understanding of the mechanisms and processes that occur in stars. When analyzing the nuclear reaction experimental data, playing a key role in astrophysical studies it becomes necessary to use interaction potentials. These...
The flux-weighted average cross-sections <σ(E)> of the photonuclear reaction 100Mo(γ,n)99Mo were determined for the end-point bremsstrahlung energies Еγmax = 30-100 MeV using the γ-activation method. Targets from natural molybdenum were irradiated by the bremsstrahlung beam with a step dEe = 4 MeV using the linear electron accelerator LUE-40 RDC “Accelerator” NSC KIPT. To determine the values...
Numerical solution of the time-dependent Schrodinger equation (TDSE) [1] is used for studying neutron transfer processes at near-barrier energies. The evolution of the wave functions for outer neutron is determined for reactions $^{181}$Ta($^{18}$O,$^{19}$O). TDSE allows us to visualize the dynamics of taking place processes [1-3]. The transfer probabilities are calculated for outer neutron...