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| measurement.pdf | | 229.49 kB | Adobe PDF |  |
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| Citació: | Calviño, F. [et al.]. Measurement of 139-La(n,gamma) cross section. A: International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics. "12 International Symposium on Capture Gamma-ray Spectroscopy and Related Topics". Notre Dame, Indiana: American Institute of Physics (AIP), 2005, p. 283-287. |
| Títol: | Measurement of 139-La(n,gamma) cross section |
| Autor: | Calviño Tavares, Francisco  ; Cortés Rossell, Guillem Pere ; Poch Parés, Agustí ; Pretel Sánchez, Carme |
| Editorial: | American Institute of Physics (AIP) |
| Data: | 2005 |
| Tipus de document: | Conference report |
| Resum: | We measured the neutron capture cross section of 139La relative to 197Au in the energy
range of 0.6 eV to 9 keV at n_TOF, the neutron time-of-flight facility at CERN. After a
description of the experimental apparatus, we discuss data analysis procedures. The data were
fitted using R-matrix formalism to extract resonance parameters which, in turn, were used to
calculate average level spacings D0 = 268 ± 22 eV and D1 < 250 eV, and neutron strength
functions S0 = (0.79 ± 0.03)×10-4 and S1 = (0.73 ± 0.05)×10-4 for s- and p-wave resonances. The
data also were used to determine Maxwellian-averaged neutron capture cross sections which, in
turn, were used to calculate the 139La abundance synthesized in a stellar model of the main
component of the s process. |
| ISBN: | 0-7354-0313-9 |
| URI: | http://hdl.handle.net/2117/11136 |
| Versió de l'editor: | http://scitation.aip.org/dbt/dbt.jsp?KEY=APCPCS&Volume=819&Issue=1 |
| Apareix a les col·leccions: | Altres. Enviament des de DRAC
Departament de Física i Enginyeria Nuclear. Ponències/Comunicacions de congressos
GREENER - Grup de recerca d´estudis energètics i de les radiacions. Ponències/Comunicacions de congressos
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