A new approach to the production and detection of bound neutron clusters is presented. The technique is based on the breakup of beams of very neutron-rich nuclei and the subsequent detection of the recoiling proton in a liquid scintillator. The method has been tested in the breakup of intermediate energy (30--50 MeV/nucleon) ¹¹Li, ¹⁴Be, and ¹⁵B beams. Some six events were observed that exhibit the characteristics of a multineutron cluster liberated in the breakup of ¹⁴Be, most probably in the channel ¹⁰Be+⁴n. The various backgrounds that may mimic such a signal are discussed in detail.
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Marqués et al. (2002) studied this question.
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