Abstract
Resonance states of 5H were investigated through the two-neutron transfer reaction t(t,p)5H. A triton beam at 57.5 MeV and a cryogenic liquid tritium target were used. The 5H missing mass spectrum in triple coincidence, proton+triton+neutron, shows a resonance at 1.8±0.1 MeV above the t+2n decay threshold. This energy is in good agreement with the result reported in Phys. Rev. Lett. 87 (2001) 092501. The resonance width, Γintr⩽0.5 MeV, is surprisingly small and difficult to reconcile with theory predictions.
Highlights
Resonance states of 5H were investigated through the two-neutron transfer reaction t(t, p)5H
The present experiment was performed with a 57.5 MeV triton beam, with triple coincidences of protons and decay products of 5H, i.e., tritons and neutrons, instead of proton singles in [11]
The 58 MeV triton beam delivered by the cyclotron was transported by the modified beam line of the ACCULINNA separator [12] to the scattering chamber containing the tritium target and charged particle detectors
Summary
Resonance states of 5H were investigated through the two-neutron transfer reaction t(t, p)5H. First attempt to obtain 5H resonance states using the t + t reaction had been made using a 22.25 MeV triton beam [11].
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