Search for 4n contributions in the reaction ¹⁴Be(CH₂,X)¹⁰He

¹ National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 , USA
² Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
³ Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
⁴ Department of Physics, Hope College, Holland, MI 49422-9000, USA
⁵ Department of Physics, Central Michigan University, Mount Pleasant, MI 48859, USA
⁶ Department of Physics and Astronomy, Augustana College, Rock Island, IL 61201, USA
⁷ Department of Physics and Astronomy, Ohio Wesleyan University, Delaware, OH 43015, USA
⁸ Department of Physics, Concordia College, Moorhead, MN 56562, USA
⁹ Department of Physics, Gettysburg College, Gettysburg, PA 17325, USA

^a e-mail: jonesm@nscl.msu.edu
^b Present address : TRIUMF, 4004, Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 Canada
^c Present address : LANL, Los Alamos, New Mexico 87545. USA

Published online: 25 March 2016

Abstract

A previously published measurement of the ground state resonance of ¹⁰He, populated by a reaction of a 59 MeV/u ¹⁴Be beam on a deuterated polyethylene target, was further analyzed to search for ⁴n emission resulting from 2p removal. No evidence for 4n events was found. A lower limit of about 1 MeV was determined for a possible resonance in ¹²He.