Conveners
Session 1: Nuclear Data Measurements (Part I)
- Franz-Josef Hambsch (EC-JRC-IRMM)
Frank Gunsing
(CEA/Saclay, Irfu)
30/08/2010, 14:30
Neutron induced reaction cross sections are of major
importance in a wide variety of research fields,
ranging from stellar nucleosynthesis, neutron-induced
symmetry breaking, and nuclear level density
investigation, to applications of nuclear technology,
including the transmutation of nuclear waste,
accelerator driven systems and nuclear fuel cycle
investigations.
In this...
Dr
Cristian Massimi
(Istituto Nazionale di Fisica Nucleare (INFN))
30/08/2010, 15:05
The slow neutron capture process (s process) in stars is responsible for the production of about half of the elemental abundances beyond iron that we observe today. Most of the s-process isotopes between iron and strontium (60 < A < 90) are produced in massive stars (M > 10-12 Msun) where the 22Ne(alpha,n)25Mg reaction is the main neutron source. Beyond strontium, the s-process abundances are...
Dr
Tamás Belgya
(Institute of Isotopes, HAS)
30/08/2010, 15:30
Prompt Gamma Activation Analysis (PGAA) of samples is routinely used at our guided cold neutron beam facilities. Adaptation of this method for analyzing enriched samples required some modification of the data analyzing program as well as changing the prompt gamma ray library for each different sample. The advantage of the method is that it is completely nondestructive and it can be applied for...
Dr
Franz Käppeler
(Karlsruhe)
30/08/2010, 16:20
About half of the abundances between Fe and Zr in Nature are produced by the slow neutron capture process (s process) in massive stars. These abundances are essentially determined by the (n,g) cross sections of the involved isotopes. In this context, recent (n, g) measurements benefit from the combination of activation and time-of-flight techniques, which were efficiently advanced by the...
Eckart Grosse
(FZ-Dresden-Rossendorf and TU Dresden)
30/08/2010, 16:55
Since decades photon strength functions have been extracted from photo-dissociation as well as from radiative capture and other nuclear reaction data. Both methods yield results for non-overlapping energy regimes and various proposals have been made for a unified parameterization covering the range from low lying single levels up to the isovector giant dipole resonance (GDR) energies. Photon...
Dr
Carlos Guerrero
(CIEMAT-CERN)
30/08/2010, 17:20
The neutron capture cross section of Am-241 is being measured at n_TOF during 2010 experimental campaign. The measurement, which combines for the first time the 4pi Total Absorption Calorimeter with a pair of low neutron sensitivity C6D6 detectors, aims at providing high accuracy data from thermal up to 1 MeV neutron energy. The experimental set-up will be discussed and first data will be presented.
