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Электронный каталог: Sosnin, N. V. - Measurement of the *7*8Se(n, *g)*7*9Se Cross Section up to 600 keV at the n_TOF Facility at CERN
Sosnin, N. V. - Measurement of the *7*8Se(n, *g)*7*9Se Cross Section up to 600 keV at the n_TOF Facility at CERN
Статья
Автор: Sosnin, N. V.
Physical Review C [Electronic resource]: Measurement of the *7*8Se(n, *g)*7*9Se Cross Section up to 600 keV at the n_TOF Facility at CERN
б.г.
ISBN отсутствует
Автор: Sosnin, N. V.
Physical Review C [Electronic resource]: Measurement of the *7*8Se(n, *g)*7*9Se Cross Section up to 600 keV at the n_TOF Facility at CERN
б.г.
ISBN отсутствует
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Статья
Sosnin, N.V.
Measurement of the *7*8Se(n, *g)*7*9Se Cross Section up to 600 keV at the n_TOF Facility at CERN / N.V.Sosnin, V.Furman, Y.Kopatch, [n_TOF Collab.] // Physical Review C [Electronic resource]. – 2024. – Vol. 110, No. 6. – P. 065805. – URL: https://doi.org/10.1103/PhysRevC.110.065805. – Bibliogr.: 49.
The *7*8Se(n, γ )*7*9Se cross section has a high impact on the abundances of *7*8Se produced during the slow neutron capture process (s process) in massive stars. A measurement of the *7*8Se radiative neutron capture cross section has been performed at the Neutron Time-of-Flight facility at CERN using a set of liquid scintillation detectors that have been optimized for a low sensitivity to neutrons. We present resonance capture kernels up to 70 keV and cross section from 70 to 600 keV. Maxwellian-averaged cross section (MACS) values were calculated for stellar temperatures between kT = 5 and 100 keV, with uncertainties between 4.6% and 5.8%. The new MACS values result in substantial decreases of 20–30% of 78Se abundances produced in the s process in massive stars and AGB stars. Massive stars are now predicted to produce subsolar *7*8Se / *7*6Se ratios, which is expected since *7*6Se is an s-only isotope, while solar *7*8Se abundances have also contributions from other nucleosynthesis processes.
ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 343 г - Взаимодействие нейтронов с ядрами
Sosnin, N.V.
Measurement of the *7*8Se(n, *g)*7*9Se Cross Section up to 600 keV at the n_TOF Facility at CERN / N.V.Sosnin, V.Furman, Y.Kopatch, [n_TOF Collab.] // Physical Review C [Electronic resource]. – 2024. – Vol. 110, No. 6. – P. 065805. – URL: https://doi.org/10.1103/PhysRevC.110.065805. – Bibliogr.: 49.
The *7*8Se(n, γ )*7*9Se cross section has a high impact on the abundances of *7*8Se produced during the slow neutron capture process (s process) in massive stars. A measurement of the *7*8Se radiative neutron capture cross section has been performed at the Neutron Time-of-Flight facility at CERN using a set of liquid scintillation detectors that have been optimized for a low sensitivity to neutrons. We present resonance capture kernels up to 70 keV and cross section from 70 to 600 keV. Maxwellian-averaged cross section (MACS) values were calculated for stellar temperatures between kT = 5 and 100 keV, with uncertainties between 4.6% and 5.8%. The new MACS values result in substantial decreases of 20–30% of 78Se abundances produced in the s process in massive stars and AGB stars. Massive stars are now predicted to produce subsolar *7*8Se / *7*6Se ratios, which is expected since *7*6Se is an s-only isotope, while solar *7*8Se abundances have also contributions from other nucleosynthesis processes.
ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 343 г - Взаимодействие нейтронов с ядрами
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