The 41Ar(n,y)42Ar reaction

The 41Ar(n,y)42Ar reaction

The cross-section of the thermal neutron capture 41Ar(n,γ)42Ar(t1/2=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 ident...

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Bibliographic Details
Main Authors: Sahoo R. N., Paul M., Köster U., Scott R., Tessler M., Zylstra A., Avila M. L., Dickerson C., Jayatissa H., Kohen M.S., McLain J., Pardo R.C., Rehm K. E., Tolstukhin I., Vondrasek R., Bailey T., Callahan L., Clark A., Collon P., Kashiv Y., Nelson A.
Format: Article
Language:English
Published: EDP Sciences 2023-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01037.pdf
Description
Summary:The cross-section of the thermal neutron capture 41Ar(n,γ)42Ar(t1/2=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.
ISSN:2100-014X

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