29 research outputs found
Investigations of Production Cross Sections and Induced Activity of 94,95,96,98Tc Produced in Mo Target by 30 MeV Proton Beam
No full text70-76Theoretical models often fill significant gap exists in measured data and radioisotopes produced may be used in research,
medical and safely disposal of radioactive waste. The excitation functions of 94Mo(p,n)94Tc, 95Mo(p,n)95Tc, 96Mo(p,n)96Tc
and 98Mo(p,n)98Tc reactions were investigated using nuclear reaction model codes TALYS-1.95 and EMPIRE-3.2.3 from
reaction threshold to 30 MeV. These codes incorporate three major nuclear reaction mechanisms including direct, compound
and pre-compound nuclear reactions. Theoretical results obtained from TALYS-1.95 and EMPIRE-3.2.3 codes were
compared with existing literature data and found to be in reasonable agreement. Additionally, induced radioactivity
estimation is also conducted for a thick Mo target due to the primary interaction of 1μA, 30 MeV proton beam
Transition of charge transport phenomena from 3D to 1D hopping at low temperatures in polyaniline/graphene composites
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Facial synthesis of polyaniline and its nanocomposites for room temperature methanol sensors
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Cross-sections of 14 MeV neutron induced reactions on some isotopes of chromium, zirconium and tin
No full text216-219Neutron induced reaction cross-sections of
the isotopes 52Cr, 53Cr, 90Zr, 91Zr,
92Zr, 94Zr, 116Sn, 118Sn and 120Sn
for (n,p), (n,n’), (n,a) and (n, 2n) reactions have been evaluated at 14 MeV. The
computations are based on the evaporation model considering the pre-equilibrium
emission mechanism under some approximations. The computer codes ALICE-91, NX-1
and SC2N3N have been used. These cross-sections were also computed using the
level density formula of Lang and Le Couteur with and without applying pairing
energy correction. The compound nucleus theory based on Fermi gas and
evaporation model with optical model potential parameters has been used. The
neutron, proton and alpha penetrabilities and inverse reaction cross-sections
have been computed using the computer code SCAT-2. The computed cross-sections
have been compared with the available experimental values and the results are
in fairly good agreement
Production Cross Sections and Induced Activity in Ge Isotopes by 30 MeV Proton Beam
Get PDF330-334The excitation functions of 70Ge(p,n)70As,72Ge(p,n)72As, 74Ge(p,n)74As and 76Ge(p,n)76As reactions were studied from reaction threshold to 30 MeV by using EMPIRE-3.2 and TALYS-1.9 nuclear reaction model codes. This study is important because some isotopes produced are important for positron emission tomography (PET). Direct, pre-compound and compound nuclear reactions are considered as main nuclear reaction mechanisms in the codes. The calculated excitation functions have been compared with available experimental data and found to be in fair agreement. Furthermore, the contributions of various reaction mechanisms have been studied in total reaction cross-section that varies with the incident proton energy. The estimation of induced radio activity in thick Ge target due to the primary interaction is carried out for1μA, 30 MeV proton beam
