C， N， O in Cosmogonic Process

Key words: 
• nuclear astrophysics /
• radiative capture reaction /
• indirect measurement /
• astrophysics reaction rate

Abstract: The proton radiative capture reactions of C and N nuclei are important for the energy production and nucleosynthesis in the CNO cycle， and the neutron radiative capture reactions of C， N and O nuclei are key reactions for the inhomogeneous Big Bang nucleosynthesis as well as for the neutron induced CNO cycle in AGB stars. So far， most of these reactions have been measured except some reactions of the unstable nuclei， such as ¹³N(p， γ)¹⁴O and ¹⁶N(n， γ)¹⁷N. While the direct measured reactions， such as the  ¹²C(p， γ)¹³N， ¹³C(p， γ)¹⁴N and ¹⁵N(p， γ)¹⁶O key reactions in CNO cycle， have not reached down to the stellar energies. In addition， the large uncertainties still exist in the measured neutron capture reactions such as ¹³C(n， γ)¹⁴C，¹⁵N(n， γ)¹⁶N and ¹⁸O(n， γ)¹⁹O. Thus it is significant to determine their astrophysical reaction rates via the indirect measurements. In this paper， the research status and feasibility of the indirect measurements for these reactions are discussed.