New measurement of ⁴He and proton decays from resonant states in ¹⁹Ne

【摘要】 A ⁶Li(¹⁶O,¹⁹Ne*)³ H multi-nucleon transfer-reaction experiment was performed to populate the highly excited states in ¹⁹Ne.The subsequent decay particles,⁴He or protons from the ¹⁹Ne resonant states,were detected in coincidence with the recoil ³H.The excitation-energy spectra of ¹⁹Ne were reconstructed using the detected proton or ⁴He and the deduced ¹⁸F or ¹⁵O data,respectively.A broad resonance at about 7.85 MeV（1/2⁺） was observed,with partial decay widths different from the previously reported values,which may have a significant impact on the destruction of ¹⁸F in astrophysical processes.Several resonances up to very high excitation energies have been identified with a large α-clustering strength,which confirm the formation of the cluster structure with a onehole configuration in light nuclei and encourage further systematic studies of the cluster structure in ¹⁹Ne.更多还原

【Abstract】 A ⁶Li(¹⁶O,¹⁹Ne*)³ H multi-nucleon transfer-reaction experiment was performed to populate the highly excited states in ¹⁹Ne.The subsequent decay particles,⁴He or protons from the ¹⁹Ne resonant states,were detected in coincidence with the recoil ³H.The excitation-energy spectra of ¹⁹Ne were reconstructed using the detected proton or ⁴He and the deduced ¹⁸F or ¹⁵O data,respectively.A broad resonance at about 7.85 MeV（1/2⁺） was observed,with partial decay widths different from the previously reported values,which may have a significant impact on the destruction of ¹⁸F in astrophysical processes.Several resonances up to very high excitation energies have been identified with a large α-clustering strength,which confirm the formation of the cluster structure with a onehole configuration in light nuclei and encourage further systematic studies of the cluster structure in ¹⁹Ne.更多还原