Speaker
Description
Excitation function of the proton induced natSn reactions below 22 MeV for
reactor applications
Siddharth Parashari1,*, S. Mukherjee1, B.K. Soni1, R. Makwana1, S.V. Suryanarayana2,
B.K. Nayak2 and H. Naik3
1Depratment of Physics, Faculty of Science, The Maharaja Sayajirao University of Baroda,
Vadodara-390002, INDIA.
2Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai-400085, INDIA.
3Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai-400085, INDIA.
*siddharthparashri5@gmail.com
ABSTRACT
Tin (Sn) has a wide range of applications in the present and modern fusion/fission reactor technologies. Zircaloy-2 and zircaloy-4 materials with 1.5% Sn are the commonly used structural alloys in present nuclear reactors. Tin offers a great resistance to corrosion and can hold high temperatures as well. Tin also possesses superconducting properties which makes it useful in the International Thermonuclear Experimental Reactor (ITER) [1], which is one of the most advanced fusion reactors, produces efficient green energy by utilizing the D-T fusion reaction. In ITER, Nb3Sn conductor is selected for making the toroidal field coils [2], which are able to carry higher current and produce a stronger magnetic field that initiates, confine shape and control the ITER plasma. As these field coils are located just after the blanket holding the plasma, thus, get exposed to high energy secondary particles produced from the fusion reaction. A nuclear reaction of 14 MeV neutrons with the ITER’s surrounding materials can produce high energy γ, n, p, and α particles. Since high energy protons can be produced in the surrounding materials, therefore, proton-induced reaction cross-section data becomes vital for all possible reaction channels around 14 MeV on different isotopes of this carefully selected magnetic material (Sn). In the present work, we have measured the production cross-sections of the 113In, 117Sb, 118mSb, 120mSb, 122Sb, and 124Sb radioisotopes using the natSn(p, x) reaction. The experiment was performed at 14UD BARC-TIFR Pelletron at Mumbai, India. A stack of five Sn foils together with the Al degraders was irradiated with 22 MeV protons. The results were measured with the literature data [3], TALYS-1.9 [4] and the ALICE-2014 [5,6] nuclear model codes. As the data for the natSn(p, x) reactions are scarce, therefore, present results becomes important from the perspective of modern reactor technology.
REFERENCES
[1]. U. Fischer et al., AIP Conference Proceedings, 769, (2005) 1478-1485.
[2]. Y. Takahashi et al., Nucl. Fusion 51, 113015, (2011) 11.
[3]. EXFOR, NDS-120, 2014. 272-276. 〈https://www-nds.iaea.org/exfor/exfor.htm〉.
[4]. A. J. Koning, S. Hilaire, S. Goriely, TALYS user manual, A nuclear reaction program, NRG-1755 ZG PETTEN, The Netherlands (2015).
[5]. M. Blann, Phys. Rev. Lett. 27 (1971) 337.
[6]. M. Blann, Phys. Rev. Lett. 28 (1972) 757.
