Measurement and covariance analysis of 100 Mo (n, 2n) 99 Mo and 96 Mo (n, p) 96 Nb reaction cross sections at the incide
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Measurement and covariance analysis of 100Mo (n, 2n) 99Mo and 96 Mo (n, p) 96Nb reaction cross sections at the incident neutron energy of 14.54 MeV Sangeetha Prasanna Ram1 · Jayalekshmi Nair1 · Saraswatula Venkata Suryanarayana2 · Laxman Singh Danu2 · Saroj Bishnoi3 · Haladhara Naik4 · Srinivasan Ganesan5 Received: 31 January 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract The 100Mo (n, 2n) 99Mo and 96Mo (n,p) 96Nb reactions have been studied relative to the 197Au (n, 2n) 196Au monitor reaction, at the neutron energy of 14.54 MeV, based on an experiment performed using Purnima neutron generator. Extended unscented transformation technique has been applied for computing the contribution of uncertainty of each attribute, which is then propagated, for the measurement and covariance analysis of the cross section of 100Mo (n, 2n) 99Mo and 96Mo (n, p) 96Nb reactions. The results obtained agree closely with the experimental data, model data and data in various evaluated nuclear data libraries. Keywords Extended unscented transformation · Unscented transformation · Covariance analysis · 100Mo (n, 2n) 99Mo and Mo (n, p) 96Nb reaction cross section · TALYS-1.8 code
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Introduction Study of activation cross section of 100Mo (n, 2n) 99Mo and 96 Mo (n, p) 96Nb reactions are significant from the point of view of the radionuclides produced, which find extensive applications in nuclear and medical fields. 99Mo radionuclide finds importance because of its decay to form 99mTc which finds extensive applications in nuclear imaging. 99mTc is used in nuclear medicine by introducing it into molecules and proteins which on injecting into the human body, are selectively absorbed by specific organs and tissues for the * Sangeetha Prasanna Ram [email protected] 1
Department of Instrumentation, V.E.S. Institute of Technology, Mumbai 400074, India
2
Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
3
Neutron and X‑ray Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
4
Radio Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
5
Former Raja Ramanna Fellow of the DAE, Bhabha Atomic Research Centre, Mumbai 400085, India
diagnostic study of structure and function of organs. The radioisotope has a half-life of around 6 h which makes it suitable for easy and fast elimination from the body, further to imaging [1]. Also it emits 140.5 keV photons when it decays to 99Tc, which can be efficiently detected and analyzed by gamma cameras for producing functional images. 96Nb and some alloys of niobium are inert and hypoallergenic, which makes it suitable for use in medical implant devices and prosthetics. Additionally, heat-treated zirconium–niobium alloys are strong and find applications in pipeline construction and also as pressure tubes [2] in Advanced heavy water reactors (AHWR). Niobium is also used in super alloys for jet engines and at very low, near cryogenic temperatures, it acts as a superconductor. Extensive measurement of the cross se
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