Abstract Double differential cross sections have been measured for light-charged particle production in deuteron-induced reactions on nat Cu at incident energies of 14.5 MeV. The experiment was performed at the isochronous cyclotron of the Institute of Nuclear Physics (Kazakhstan). Charged particles were detected using a set of Si and CsI detectors from 30° to 135°, by step of 15°. The integral cross-sections were determined by integrating over the angle the double differential cross-sections. Double differential and integral charged particle emission cross-sections have been calculated by the TALYS 1.9 nuclear reaction which code based on a modified version of the exciton model of the pre-equilibrium nuclear decay. Direct, compound, and pre-equilibrium reaction contributions have been determined for the emission of proton particles.

Abstract The aim of this work was to measure the double differential cross-sections for 59Co(p, xp) reactions at a proton energy of 7 MeV on the 59Co nucleus at the U-150M isochronous cyclotron of the Institute of Nuclear Physics (Kazakhstan). The analysis of the experimental results was carried out on the basis of the exciton model of nuclear decay within the framework of the PRECO-2006 computational code, which describes the transition of an excited system to an equilibrium state. The contributions of the pre-equilibrium, compound, and direct mechanisms are calculated for the formation of the protons energy spectrum.

The energy spectra of protons and alpha-particles are obtained for a wide range of angles in reactions of 22 MeV energy protons and Co-59 nucleus. The experiment was performed at the isochronous cyclotron of the Institute of Nuclear Physics, Kazakhstan. The double-differential and integral cross sections of (p, xp) and (p, x alpha) reactions were measured. Experimental results were compared with the TALYS-1.9 nuclear model code calculations. In general, the calculated spectra were in good agreement with the measured ones.

The paper presents new experimental data on the double-differential and integral (d, xd) reaction cross sections from the interaction of deuterons of 14.5 MeV energy with copper. The experiment was performed at the isochronous cyclotron of the Institute of Nuclear Physics, Kazakhstan. The experimental data were analysed within the framework of the TALYS-1.9 calculation code. It is established that the obtained cross section is mainly formed by mechanisms of pre-equilibrium decay.

In this paper, we present a new measurement of the inclusive cross section (p,xp) reactions on $$^{nat}\hbox {Cu}$$ at incident energies of $$\hbox {E}_{p}=$$ 7 and 30 MeV. The (p,xp) reaction at $$\hbox {E}_{p}$$ = 7 MeV on $$^{nat}\hbox {Cu}$$ is measured for the first time and (p,xp) and ( $$\hbox {p,x}\alpha $$ ) inclusive cross section for the same target at $$\hbox {E}_{p}=$$ 30 MeV is re-measured in order to improve the quality of the previous experimental data. For both energies, the mechanism of the pre-equilibrium reactions as well as the level of energy dependence are discussed and the adequacy of the theoretical models in explaining the newly measured experimental data is also assessed by comparing the experimental data with the results of the Hauser-Feshbach and Exciton models. We use the microscopic approach based on nucleon–nucleon interaction to produce the complex nuclear potential.

На пучке ускоренных протонов циклотрона У-150М Института ядерной физики измерены дважды–дифференциальные сечения реакций (р,хр) на ядре 103 Rh при энергии Ер = 30 МэВ. В качестве мишеней использовалась самоподдерживающаяся фольгатолщиной 3 мкм с содержанием изотопа 103 Rh ∼ 98%. Для идентификации продуктов реакции использовался двухдетекторный телескоп, состоящий из пролетного тонкого кремниевого детектора толщиной 100 мкм и детектора полного поглощения (сцинтиллятор CsI(Tl))толщиной 2.5 см. Из дважды–дифференциальных сечений получены интегральные спектры с последующим определением полных парциальных сечений реакций (p,хp). Полученные экспериментальные результаты проанализированы в рамках модифицированной версии экситонной модели предравновесного распада в рамках расчетного кода PRECO-2006. Установлено, что сечения реакций 103 Rh(p,хp) при энергии протонов 30 МэВ преимущественно формируются механизмом предравновесного распада.

Differential cross sections of elastic and inelastic scattering with excitation of states of the rotational band of the ground state of ^24 Mg were measured at an α -particle energy of 50.5 MeV and ^3 He 60 MeV. The angular distributions were analyzed using an optical model and a coupled channel method. A number of potentials with significantly different geometries are obtained, which describe well the elastic scattering at the measured angular range. The collective model was used in the calculations via the coupled channel method. In addition to the ground state, three low-lying states of ^24 Mg, 2 ^+ (1.368 MeV), 4 ^+ (4.122 MeV), and 4.238 MeV (2 ^+ ), were included in the coupling scheme. The values of quadrupole ( β _2 ) and hexadecapole ( β _4 ) deformation parameters were extracted. According to the analysis of scattering of α -particles, they are 0.52 and 0.05. For ^3 He, they are 0.75 and 0.07, respectively. The extracted parameters correspond to the previously obtained values from the scattering of protons, deuterons and α -particles.

Experimental data on elastic and inelastic scattering of 50.5 MeV α-particles and 60 MeV 3He ions by 28Si nuclei were analyzed within the framework of the standard optical model of the nucleus, in which the effect of inelastic channels is taken into account by the phenomenological introduction of an imaginary absorbing part into the interaction potential between colliding nuclei. The optimal values of the internuclear interaction potential obtained as a result of the theoretical analysis were used to study the cross sections for inelastic scattering of helium ions with the excitation of the 1.78 and 4.61 MeV states of the nucleus under study. From the analysis by the channel coupling method, where the calculation was performed taking into account both elastic and inelastic channels, the value of the quadrupole deformation parameter for α-particles β2 = 0.37 and for 3He ions β2 = 0.49 was determined. Optimal agreement between the calculated values and experimental data was achieved by varying the parameters V, W, and β2. The found parameters agree with the previously obtained values from the scattering of protons, deuterons and α-particles. Taking into account only the quadrupole deformation extracted from the 0+ – 2+ bond, a good description of all three experimental data on elastic and inelastic scattering of the cross sections was achieved.

Differential cross sections of elastic and inelastic scattering with excitation of states of the rotational band of the ground state of $$^{24}$$ Mg were measured at an $$\alpha $$ -particle energy of 50.5 MeV and $$^{3}$$ He 60 MeV. The angular distributions were analyzed using an optical model and a coupled channel method. A number of potentials with significantly different geometries are obtained, which describe well the elastic scattering at the measured angular range. The collective model was used in the calculations via the coupled channel method. In addition to the ground state, three low-lying states of $$^{24}$$ Mg, 2 $$^{+}$$ (1.368 MeV), 4 $$^{+}$$ (4.122 MeV), and 4.238 MeV (2 $$^{+}$$ ), were included in the coupling scheme. The values of quadrupole ( $$\beta _{2}$$ ) and hexadecapole ( $$\beta _{4}$$ ) deformation parameters were extracted. According to the analysis of scattering of $$\alpha $$ -particles, they are 0.52 and 0.05. For $$^{3}$$ He, they are 0.75 and 0.07, respectively. The extracted parameters correspond to the previously obtained values from the scattering of protons, deuterons and $$\alpha $$ -particles.

Double-differential protons and alpha-particles emission cross sections were measured for proton-induced reactions on Rh-103 nucleus at the incident energy of 22 MeV. The experiment was performed at the isochronous cyclotron of the Institute of Nuclear Physics (Kazakhstan). After integrating the double-differential cross sections over the angle, the integral cross sections of Rh-103(p, xp) and (p, x alpha) reactions were obtained and compared with the TENDL-2019 evaluation. In general, the calculated spectra were in good agreement with the measured ones.

The aim of this work was to measure the cross section of nuclear reactions natCu(p,xp) on the isochronous cyclotron U-150M of the Institute of nuclear physics at the energy Ep=7 MeV. The analysis of the experimental results of these reactions on the natCu is carried out in accordance with the exciton model of nuclear decay, which is a statistical approach describing the transition of the excited core to an equilibrium state. The theoretical analysis of the experimental results was performed in the framework of the PRECO-2006 calculation code. The obtained experimental results can be used in the design of hybrid nuclear power plants, as well as in radiation materials science.

Double-differential and integral cross sections of the (p, xp) and (p, x alpha) reactions on the Rh-103 nucleus were measured at E-p = 30 MeV using a proton beam delivered by the U-150M cyclotron of the Institute of Nuclear Physics (Almaty, Kazakhstan). A self-sustaining Rh-103 foil of 3 mu m thickness was used as a target. The obtained experimental results were compared with the TENDL-2019 nuclear data library, which provides the output of the TALYS nuclear model code. We assert that the TENDL-2019 evaluations provide a valid description of the obtained experimental data.

Institute of Nuclear Physics, Ibragimov 1, 050032 Almaty, Kazakhstan al-Farabi Kazakh National University, al-Farabi 71, 050040 Almaty, Kazakhstan Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Russia National Nanotechnology Laboratory of Open Type al-Farabi 71, 050040 Almaty, Kazakhstan Gumilev Eurasian National University Satpayev 2, 010008 Nur-Sultan, Republic of Kazakhstan Nazarbayev University, Kabanbay batyr 53, 010000 Nur-Sultan, Kazakhstan Akdeniz University, Department of Physics Dumlupınar blvd, 07058 Campus Antalya, Turkey

This paper presents the experimental double-differential and integral cross sections of reactions (p,xp), and (p,xα) on natCu nucleus. The experiment with the protons, accelerated to energy of 30.0 MeV was performed at the isochronous cyclotron of Institute of Nuclear Physics (Kazakhstan). We investigated the adequacy of the theoretical models in explaining the measured experimental data and contributions of direct, preequilibrium and compound processes in the formation of the cross sections were determined. We assert that the traditional frameworks are valid for the description of the experimental data.

The energy spectra of protons and α particles are obtained for a wide range of angles in reactions between α particles with an energy of 29 MeV and 27Al and 59Co nuclei. The contributions from different mechanisms that shape the inclusive proton and α-particle spectra of the studied reactions are determined by analyzing the experimental data with the PRECO-2006 code. The experimental results are added to the bank of data needed for the development of advanced nuclear technologies.

The work related to the study of the inclusive spectra of secondary protons produced in the interaction of protons with energies of 30.0 MeV with the nucleus 58Ni. Double-differential and integral cross sections of (p, xp) reaction have been received with further determination of their total partial cross sections. The analysis of the experimental spectra is based on a modified version of the exciton model of pre-equilibrium decay in the frame of code PRECO-2006. The contributions of compound, preequilibrium and direct mechanisms to the formation of the integral cross section are calculated. The experimental results can be used in developing new approaches in theory of nuclear reactions, as well as the design of safe and non-waste hybrid nuclear power plants.

New experimental double-differential and integral spectra of the (4He,xp) reactions are presented at the 29 MeV energy of incident ions 4He on the 27Al and 59Co nuclei which used as structural elements and elements of the target assembly of the projected hybrid nuclear installations (ADS). To measure the cross sections of the reactions, a standard dE-E method was used, where two parameters of the detected particle are recorded: specific ionization and total energy. The systematic error of the measured double-differential cross sections did not exceed 10%. The statistical error varied from 5% to 15%, depending on the energy range of the emitted protons and the angle of their detection. The theoretical analysis of the experimental data is carried out within the framework of the PRECO-2006 code, which is based on modern theoretical models of nuclear decay. The mechanisms of nuclear reactions that form them are determined. The obtained experimental results fill the missing values of the cross sections of the studied reactions and can be used in the development of new approaches to the theory of nuclear reactions, as well as in the construction of hybrid nuclear power plants and in nuclear medicine.