Measurement of $^{139}$La(n,$\gamma$) Cross Section at n_TOF
Langue
en
Communication dans un congrès
Ce document a été publié dans
Frontiers in Nuclear Structure, Astrophysics, and Reactions - FINUSTAR, Frontiers in Nuclear Structure, Astrophysics, and Reactions - FINUSTAR, 2005-09-12, Isle of Kos. 2006, vol. 831, n° 831, p. 551-553
AIP Press
Résumé en anglais
The capture cross section of the 139La has been measured relative to 197Au standard at n_TOF. We provide here a short description of the experimental apparatus and of the data analysis procedures. The extracted resonance ...Lire la suite >
The capture cross section of the 139La has been measured relative to 197Au standard at n_TOF. We provide here a short description of the experimental apparatus and of the data analysis procedures. The extracted resonance parameters allow to calculate the fundamental nuclear quantities such as average spacing $\langleD\rangle$ 1=0 = 268 ± 22 eV, $\langleD\rangle$ 1=1 < 250 eV neutron strength functions S0 = (0.79 ± 0.03)×10-4, and S1 = (0.73 ± 0.05)×10-4 and the Maxwellian-averaged capture cross section (MACS). The MACS is particularly useful for the determination of the abundance synthesized by the main component of the s process< Réduire
Mots clés en anglais
neutron radiative capture
lanthanum
nuclei with mass number 90 to 149
time of flight spectroscopy
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