The 41Ar(n,y)42Ar reaction

R. N. Sahoo; M. Paul; U. Köster; R. Scott; M. Tessler; A. Zylstra; M. L. Avila; C. Dickerson; H. Jayatissa; M.S. Kohen; J. McLain; R.C. Pardo; K. E. Rehm; I. Tolstukhin; R. Vondrasek; T. Bailey; L. Callahan; A. Clark; P. Collon; Y. Kashiv; A. Nelson

doi:10.1051/epjconf/202328401037

All issues

Volume 284 (2023)

EPJ Web of Conf., 284 (2023) 01037

Abstract

Open Access

Issue		EPJ Web of Conf. Volume 284, 2023 15^th International Conference on Nuclear Data for Science and Technology (ND2022)


Article Number		01037
Number of page(s)		4
Section		Nuclear Reaction Measurements
DOI		https://doi.org/10.1051/epjconf/202328401037
Published online		26 May 2023

EPJ Web of Conferences 284, 01037 (2023)
https://doi.org/10.1051/epjconf/202328401037

The ⁴¹Ar(n,y)⁴²Ar reaction

R. N. Sahoo¹, M. Paul¹^*, U. Köster², R. Scott³, M. Tessler⁴, A. Zylstra⁵, M. L. Avila³, C. Dickerson³, H. Jayatissa³, M.S. Kohen¹, J. McLain³, R.C. Pardo³, K. E. Rehm³, I. Tolstukhin³, R. Vondrasek³, T. Bailey⁶, L. Callahan⁶, A. Clark⁶, P. Collon⁶, Y. Kashiv⁶ and A. Nelson⁶

¹ The Hebrew University of Jerusalem, Jerusalem, Israel 91904
² Institut Laue-Langevin, Grenoble, France
³ Argonne National Laboratory, Argonne, IL 60439, USA
⁴ Soreq Nuclear Research Center, Yavne, Israel
⁵ Lawrence Livermore National Laboratory, Livermore, CA, USA
⁶ University of Notre Dame, Notre Dame, IN 465656, USA

^* e-mail: paul@vms.huji.ac.il

Published online: 26 May 2023

Abstract

The cross-section of the thermal neutron capture ⁴¹Ar(n,γ)⁴²Ar(t_1/2=32.9 y) reaction was measured by irradiating a ⁴⁰Ar sample at the high-flux reactor of Institut Laue-Langevin (ILL) Grenoble, France. The signature of the two-neutron capture has been observed by measuring the growth curve and identifying the 1524.6 keV γ-lines of the shorter-lived ⁴²K(12.4 h) β⁻ daughter of ⁴²Ar. Our preliminary value of the ⁴¹Ar(n,γ)⁴²Ar thermal cross section is 240(80) mb at 25.3 meV. For the first time, direct counting of ⁴²Ar was performed using the ultra-high sensitivity technique of noble gas accelerator mass spectrometry (NOGAMS) at Argonne National Laboratory, USA.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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