¹⁶O(n,α) cross section investigation using LENZ instrument at LANSCE

E-ISSN： 2100-014x|122|issue|05004-05004

ISSN： 2100-014x

Source： EPJ Web of Conference, Vol.122, Iss.issue, 2016-06, pp. : 05004-05004

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Abstract

Importance of studying the ¹⁶O(n,α) reaction is motivated by multiple nuclear applications. The Los Alamos Neutron Science Center (LANSCE) produces a white neutron spectrum ranging from thermal to several hundreds of MeV energies. We have recently developed the LENZ (Low Energy NZ-neutron induced charged particle detection) capability to measure high-precision (n,α) cross sections. In order to provide more reliable data, we have enhanced solid angle coverage, and improved signal-to-noise ratios and time-of-flight resolution by implementing digitizer waveform analysis. The LENZ was commissioned by studying the ⁵⁹Co(n,α) reaction with neutron beams in early 2015. For the ¹⁶O(n,α) reaction, we investigate solid oxygen targets and make a relative measurement to a better known cross section, such as the ⁶Li(n,α) reaction in order to further reduce systematic uncertainty. We will discuss the progress of the ¹⁶O(n,α) study at LANSCE and the outlook for improving Hauser-Feshbah prediction on (n,p) reaction cross sections.