Differential cross sections for ${{^{12}\mathrm{C}(n,α_{0})}}$, ${{^{16}\mathrm{O}(n,α_{0})}}$ and ${{^{16}\mathrm{O}(n,α_{1,2,3})}}$ between ${E_n}$ = 7.2 and 10 MeV with an active-target Time Projection Chamber

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Authors: Jack Bishop, C. E. Parker, R. Smith, Tz. Kokalova, G. V. Rogachev, C. Wheldon, S. Ahn, E. Koshchiy, K. Brandenburg, C. R. Brune, R. J. Charity, J. Derkin
+15 more N. Dronchi, G. Hamad, Y. Jones-Alberty, T. N. Massey, Zach Meisel, E. V. Ohstrom, S.N. Paneru, E. C. Pollacco, M. Saxena, N. Singh, Lee G. Sobotka, D. Soltesz, S. K. Subedi, A. A. Voinov, J. Warren
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Abstract

Data for the ${{^{12}\mathrm{C}(n,α_{0})}}$, ${{^{16}\mathrm{O}(n,α_{0})}}$ and ${{^{16}\mathrm{O}(n,α_{1,2,3})}}$ differential cross sections are important for several different areas of nuclear physics such as understanding neutron transmutation in nuclear reactors. The TexAT Time Projection Chamber was used to measure the differential and angle-integrated cross sections in active-target mode. The chamber was filled with CO$_2$ gas and used a quasi-monoenergetic neutron beam from the $d(d,n)$ reaction at Edwards Accelerator Lab at Ohio University. A comparison between our current and previous results at overlapping energies and angles which showed good agreement in angular dependence and absolute cross section. A broader angular coverage than previous results demonstrated that the integrated cross section for the \po16 reaction deviates from ENDFVIII.0 evaluations. This first instance of neutron-induced measurements with an active-target Time Projection Chamber demonstrates the use of this method for high-quality differential cross section data across a broad angular range, generating good statistics with a relatively low-intensity beam.

Fields of Study & Subjects

Nuclear physics research studies Nuclear reactor physics and engineering Nuclear Physics and Applications

Publication details

Journal / source
arXiv (Cornell University)
Publication date
6 January 2026
Document type
Preprint