Excitation functions measurements and evaluation of “3He and alpha” induced nuclear reactions on selected targets
Bahaa Mohamed Ali Mohamed Mohsena;
Abstract
Abstract
Radioisotopes have found several applications in almost all activities of human life. They play a role in different basic science branches as well as in different applications as power production, security, medicine, agriculture, industry, food preservation and sterilization, water resources, archaeology and many other fields. Production of radioisotopes and measurement of their cross-section data are therefore of considerable interest for a wide range of applications. As a consequence, some nuclear reactors and accelerators have established and developed over the years for radioisotopes production via neutron and charged particles induced nuclear reactions. The cross-section data of induced nuclear reactions are also required for testing the different nuclear reaction models. Therefore, nuclear reaction cross-section data are important for validating as well as for further development of the nuclear reaction codes. As part of systematic studies of 3He-particle induced nuclear reaction on different natural targets, irradiation of natV and natSn were performed at the MGC-20E cyclotron at the Institute for Nuclear Research (ATOMKI), Debrecen, Hungary. Furthermore, the activation of those targets is of considerable interest due to the absence of their nuclear reaction cross-section data and their activation products radioisotopes. The following nuclear reactions cross-sections and excitation functions were evaluated: natV(3He,2α)46Sc, natV(3He,αxn)48V, natV(3He,pxn)51Cr, natV(3He,xn)52m,g,51Mn, natSn(3He,xn)116g,117g,118g,119g,119m,121g,121m,123mTe, natSn(3He,pxn)115g,117,118m,120m,122g,124gSb, and natSn(3He,2pxn)113g,117mSn. The integral yields of these products were calculated in the energy ranges from about 27 MeV down to their threshold energies. More efforts were performed for comparing the production routes of the practical radioisotopes 51Cr, 52gMn and 118gSb(daughter of 118Te). In addition, α-particle induced nuclear reactions on natV were studied. Cross-sections and excitation functions of the nuclear reactions 51V(α,n)54Mn and 50V(α,2n)52gMn were evaluated. Integral yields of these reactions were calculated and additional efforts were made for comparing the different production routes of the practical radioisotope 54Mn. All cross-section data measurements in this work were performed in the frame of the activation method by the stacked-foils activation technique. Theoretical calculations for the nuclear reactions cross-sections were carried out using the nuclear reaction codes EMPIRE 3.1 and TALYS 1.6 for all investigated reactions. In case of α-particle activation processes, an additional theoretical model calculation was performed using the nuclear reaction code ALICE-IPPE and EMPIRE 3.2.2. Using the last code, attempts were performed to get reliable data by adjusting the input parameters of the code. EMPIRE 3.2.2 was also used for reproducing the excitation functions of 3He activation of vanadium. The theoretical data of TALYS 1.6 were taken from the TENDL libraries.
Radioisotopes have found several applications in almost all activities of human life. They play a role in different basic science branches as well as in different applications as power production, security, medicine, agriculture, industry, food preservation and sterilization, water resources, archaeology and many other fields. Production of radioisotopes and measurement of their cross-section data are therefore of considerable interest for a wide range of applications. As a consequence, some nuclear reactors and accelerators have established and developed over the years for radioisotopes production via neutron and charged particles induced nuclear reactions. The cross-section data of induced nuclear reactions are also required for testing the different nuclear reaction models. Therefore, nuclear reaction cross-section data are important for validating as well as for further development of the nuclear reaction codes. As part of systematic studies of 3He-particle induced nuclear reaction on different natural targets, irradiation of natV and natSn were performed at the MGC-20E cyclotron at the Institute for Nuclear Research (ATOMKI), Debrecen, Hungary. Furthermore, the activation of those targets is of considerable interest due to the absence of their nuclear reaction cross-section data and their activation products radioisotopes. The following nuclear reactions cross-sections and excitation functions were evaluated: natV(3He,2α)46Sc, natV(3He,αxn)48V, natV(3He,pxn)51Cr, natV(3He,xn)52m,g,51Mn, natSn(3He,xn)116g,117g,118g,119g,119m,121g,121m,123mTe, natSn(3He,pxn)115g,117,118m,120m,122g,124gSb, and natSn(3He,2pxn)113g,117mSn. The integral yields of these products were calculated in the energy ranges from about 27 MeV down to their threshold energies. More efforts were performed for comparing the production routes of the practical radioisotopes 51Cr, 52gMn and 118gSb(daughter of 118Te). In addition, α-particle induced nuclear reactions on natV were studied. Cross-sections and excitation functions of the nuclear reactions 51V(α,n)54Mn and 50V(α,2n)52gMn were evaluated. Integral yields of these reactions were calculated and additional efforts were made for comparing the different production routes of the practical radioisotope 54Mn. All cross-section data measurements in this work were performed in the frame of the activation method by the stacked-foils activation technique. Theoretical calculations for the nuclear reactions cross-sections were carried out using the nuclear reaction codes EMPIRE 3.1 and TALYS 1.6 for all investigated reactions. In case of α-particle activation processes, an additional theoretical model calculation was performed using the nuclear reaction code ALICE-IPPE and EMPIRE 3.2.2. Using the last code, attempts were performed to get reliable data by adjusting the input parameters of the code. EMPIRE 3.2.2 was also used for reproducing the excitation functions of 3He activation of vanadium. The theoretical data of TALYS 1.6 were taken from the TENDL libraries.
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| Title | Excitation functions measurements and evaluation of “3He and alpha” induced nuclear reactions on selected targets | Authors | Bahaa Mohamed Ali Mohamed Mohsena | Issue Date | 2018 |
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