Low-lying excited states in [superscript 17,19]C

Abstract

[superscript 17,19]C nuclei have been investigated by proton inelastic scattering on a liquid hydrogen target at intermediate energies. Two peaks were observed in the Doppler-corrected [gamma]-ray spectra with energies of 210(6), 331(6) keV in [superscript 17]C and 72(4), 197(6) keV in [superscript 19]C corresponding to the decay of two excited states in both nuclei. Analyzing the reaction cross sections, tentative spin values were determined for the states. The experimental results are in reasonable agreement with the predictions by shell model calculations.