Search for Muon Catalyzed 3Hed Fusion

Le résumé fourni par la source

Abstract—This report presents the results of an experiment aimed at observation of the muon catalyzed 3Hed fusion reaction 3He + $$\mu d \to $$ $$^{3}{\text{He}}\mu d \to {{\,}^{4}}{\text{He}}$$ (3.66 MeV) + p (14.64 MeV) + μ which might occur after a negative muon stop in the D2 + 3He gas mixture. The basic element of the experimental setup is a Time Projection Chamber (TPC) which can detect the incoming muons and the products of the fusion reaction. The TPC operated with the D2 + 3He (5%) gas mixture at 31 K temperature. About $${{10}^{8}}$$ 3Heμd molecules were produced with only 2 registered candidates for the muon catalyzed 3Hed fusion with the expected background $${{N}_{{{\text{bg}}}}} = 2.2 \pm 0.3$$ events. This gives an upper limit for the probability of the fusion decay of the 3Heμd molecule $${{P}_{{\text{F}}}}{{(}^{3}}{\text{He}}\mu d) \leqslant 1.1 \times {{10}^{{ - 7}}}$$ at 90% C.L. Also presented are the measured formation rate of the 3Heμd molecule $${{\lambda }_{{{{d}^{3}}{\text{He}}}}} = 192(3) \times {{10}^{6}}\,\,{{{\text{s}}}^{{ - 1}}}$$ and the probability of the fast muon transfer from the excited to the ground state of the $$\mu d$$ atom $${{q}_{{1S}}} = 0.80(3)$$ . The obtained results are compared with the previously published data.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.