학술논문
Observation of a two-neutron cascade from a resonance in 24 O.
Document Type
Article
Author
Source
Subject
*NEUTRON resonance
*PAIRING correlations (Nuclear physics)
*NUCLEAR energy
*NEUTRONS
*NUCLEAR physics
*NUCLEAR forces (Physics)
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Language
ISSN
0556-2813
Abstract
A new resonance having a relative decay energy of ~0.6 MeV has been observed above the two-neutron separation energy in 24O at an excitation energy of ~7.5 MeV. The new level was found to directly feed the first excited state in 23O, an E=0.045(2)-MeV resonance, through the measurement of neutron-neutron correlations. Energy level comparisons with 23O suggest that this new level in 24O is dominated by an unpaired neutron in the ?0d3/2 single-particle orbital coupled to a single hole in the ?0d5/2 single-particle orbital. Establishment of this two-neutron discrimination technique provides a means for investigating high-lying excited states in neutron-rich nuclei. [ABSTRACT FROM AUTHOR]