Cross Section Measurements of (n,x) Reactions at 17.9 MeV Using Highly Enriched Ge Isotopes


HNPS2021 Proceedings Cover
Published: Oct 17, 2022
Keywords:
neutrons activation method enriched targets cross section measurements
Sotirios Chasapoglou
http://orcid.org/0000-0001-8647-3594
Michael Axiotis
George Gkatis
Sotirios Harissopulos
Michael Kokkoris
Anastasios Lagoyannis
Claudia Lederer-Woods
Veatriki Michalopoulou
Marilia I. Savva
Ion E. Stamatelatos
Athanasios Stamatopoulos
Theodora Vasilopoulou
Rosa Vlastou
Abstract
Τhe 70Ge(n,2n)69Ge, 72Ge(n,a)69mZn, 72Ge(n,p)72Ga and 73Ge(n,p)73Ga reactions have been measured by means of the activation technique at neutron energy 17.9 MeV. The quasimonoenergetic neutron beam was produced via the 2H(d,n)3He reaction at the 5.5 MV Tandem Van de Graaff accelerator of NCSR “Demokritos.” Isotopically highly enriched targets of 70Ge, 72Ge and 73Ge, provided by the nTOF collaboration at CERN, have been used, thus allowing accurate cross section measurements since no corrections are needed to compensate for the parasitic reactions from neighboring isotopes that exist in the case of using natural Ge target. The cross section has been deduced with respect to the 27Al(n,α)24Na reference reaction.
Article Details
  • Section
  • Oral contributions
References
Avrigeanu M, Avrigeanu V, Diakaki M, Vlastou R (2012) Isomeric cross sections of fast-neutron-induced reactions on 197 Au. Phys Rev C 85:44618. https://doi.org/10.1103/PhysRevC.85.044618
Fessler A, Plompen AJM, Smith DL, et al (2000) Neutron activation cross-section measurements from 16 to 20 MeV for isotopes of F, Na, Mg, Al, Si, P, Cl, Ti, V, Mn, Fe, Nb, Sn, and Ba. Nucl Sci Eng 134:171–200. https://doi.org/10.13182/NSE99-14
Talou P, Kawano T, Young PG, et al (2007) Improved evaluations of neutron-induced reactions on americium isotopes. Nucl Sci Eng 155:84–95. https://doi.org/10.13182/NSE07-A2646
Dzysiuk N, Koning A (2017) Improving activation cross section data with TALYS. EPJ Web Conf 146:2047. https://doi.org/10.1051/epjconf/201714602047
Tsinganis A, Diakaki M, Kokkoris M, et al (2011) Isomeric cross section of the 197 Au(n,2n) reaction. Phys Rev C 83:24609. https://doi.org/10.1103/PhysRevC.83.024609
Galanopoulos S, Vlastou R, Papadopoulos CT, et al (2007) Experimental and theoretical studies of (n, p) reactions on Ge isotopes. Nucl Instruments Methods Phys Res Sect B Beam Interact with Mater Atoms 261:969–973. https://doi.org/10.1016/j.nimb.2007.04.007
Vlastou R, Papadopoulos CT, Kokkoris M, et al (2007) Neutron induced reactions at the Athens Tandem Accelerator NCSR “Demokritos.” J Radioanal Nucl Chem 272:219–222. https://doi.org/10.1007/s10967-007-0503-8
Otuka N, Dupont E, Semkova V, et al (2014) Towards a More Complete and Accurate Experimental Nuclear Reaction Data Library (EXFOR): International Collaboration Between Nuclear Reaction Data Centres (NRDC). Nucl Data Sheets 120:272–276. https://doi.org/https://doi.org/10.1016/j.nds.2014.07.065
Vlastou R, Kokkoris M, Diakaki M, et al (2011) Characterization of the neutron flux distribution at the Athens Tandem Accelerator NCSR “demokritos.” In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. North-Holland, pp 3266–3270
Kalamara A, Patronis N, Vlastou R, et al (2019) Determination of the 193Ir(n, 2n) reaction cross section and correction methodology for the 191Ir(n, γ) contamination. Eur Phys J A 55:1–11. https://doi.org/10.1140/epja/i2019-12879-x
Brown DA, Chadwick MB, Capote R, et al (2018) ENDF/B-VIII.0: The 8th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering Data. Nucl Data Sheets 148:1–142. https://doi.org/10.1016/j.nds.2018.02.001
J. Theuerkauf, Esser S, Krink S, et al Program Tv
Goorley T, James M, Booth T, et al (2012) Initial MCNP6 release overview. Nucl. Technol. 180:298–315
Otuka N, Lalremruata B, Khandaker MU, et al (2017) Uncertainty propagation in activation cross section measurements. Radiat Phys Chem 140:502–510. https://doi.org/https://doi.org/10.1016/j.radphyschem.2017.01.013
Mannhart W (2011) A Small Guide to Generating Covariances of Experimental Data (INDC(NDS)--0588). Int At Energy Agency
Plompen AJM, Cabellos O, De Saint Jean C, et al (2020) The joint evaluated fission and fusion nuclear data library, JEFF-3.3. Eur Phys J A 56:181. https://doi.org/10.1140/epja/s10050-020-00141-9
Shibata K, Iwamoto O, Nakagawa T, et al (2011) JENDL-4.0: A new library for nuclear science and engineering. J Nucl Sci Technol 48:1–30. https://doi.org/10.1080/18811248.2011.9711675
Zabrodskaya S V, Ignatyuk A V, Koscheev VN (2007) ROSFOND - Rossiyskaya Natsionalnaya Biblioteka Nejtronnykh Dannykh. Ross Natsionalnaya Bibl Nejtr Dannykh, VANT, Nucl Constants 3:1–2
Sublet J-C, Packer LW, Kopecky J, et al EASY Documentation Series The European Activation File: EAF-2010 neutron-induced cross section library
Nesaraja CD (2014) Nuclear Data Sheets for A=69. Nucl Data Sheets 115:1–134. https://doi.org/https://doi.org/10.1016/j.nds.2013.12.001