One-neutron knockout reaction of 17C on a hydrogen target at 70 MeV/nucleon

Abstract

First experimental evidence of the population of the first 2- state in 16C above the neutron threshold is obtained by neutron knockout from 17C on a hydrogen target. The invariant mass method combined with in-beam gamma-ray detection is used to locate the state at 5.45(1) MeV. Comparison of its populating cross section and parallel momentum distribution with a Glauber model calculation utilizing the shell-model spectroscopic factor confirms the core-neutron removal nature of this state. Additionally, a previously known unbound state at 6.11 MeV and a new state at 6.28(2) MeV are observed. The position of the first 2- state, which belongs to a member of the lowest-lying p-sd cross shell transition, is reasonably well described by the shell-model calculation using the WBT interaction.

arXiv comment15 pages, 3 figures

References in corpus (13)

• Reaction cross sections of carbon isotopes incident on a proton
• One-neutron removal reactions on neutron-rich psd-shell nuclei
• Evidence for the ground-state resonance of 26O
• The N = 16 spherical shell closure in 24O
• Anomalously hindered E2 strength B(E2;2_1^+ -> 0^+) in 16C
• One- and two-neutron removal reactions from the most neutron-rich carbon isotopes
• Nilsson diagrams for light neutron-rich nuclei with weakly-bound neutrons
• Study of two-neutron radioactivity in the decay of 26O
• MOMDIS: a Glauber model computer code for knockout reactions
• Lifetime measurements of first excited states in 16,18C
• Unbound excited states in 19,17C
• Beta-delayed neutron and gamma-ray spectroscopy of 17C utilizing spin-polarized 17B
• $p$-$sd$ shell gap reduction in neutron-rich systems and cross-shell excitations in ${}^{20}$O

Cited by in corpus (7)

• Large Acceptance Spectrometers for Invariant Mass Spectroscopy of Exotic Nuclei and Future Development
• A three-body model for the analysis of quasi-free scattering reactions in inverse kinematics
• Single-neutron knockout from ${}^{20}\text{C}$ and the structure of ${}^{19}\text{C}$
• Characteristic αand ^{6}He decays of the linear-chains in ^{16}C
• Neutron occupancy of the 0d5/2 orbital and the N=16 shell closure in 24O
• Unbound states in 17C and p-sd shell-model interactions
• Activation of momentum fluctuations in wave packet molecular dynamics: Impacts on momentum distributions of projectilelike fragments