Novel method to study neutron capture of U 235 and U 238 simultaneously at keV energies
-
Altmetric Citations
Wallner, Anton; Belgya, T.; Bichler, Max; Buczak, K; Dillmann, I; Kappeler, F; Lederer, C; Mengoni, A.; Quinto, F.; Steier, P; Szentmiklosi, L
Description
The neutron capture cross sections of the main uranium isotopes, U235 and U238, were measured simultaneously for keV energies, for the first time by combining activation technique and atom counting of the reaction products using accelerator mass spectrometry. New data, with a precision of 3%-5%, were obtained from mg-sized natural uranium samples for neutron energies with an equivalent Maxwell-Boltzmann distribution of kT∼25keV and for a broad energy distribution peaking at 426 keV. The...[Show more]
dc.contributor.author | Wallner, Anton | |
---|---|---|
dc.contributor.author | Belgya, T. | |
dc.contributor.author | Bichler, Max | |
dc.contributor.author | Buczak, K | |
dc.contributor.author | Dillmann, I | |
dc.contributor.author | Kappeler, F | |
dc.contributor.author | Lederer, C | |
dc.contributor.author | Mengoni, A. | |
dc.contributor.author | Quinto, F. | |
dc.contributor.author | Steier, P | |
dc.contributor.author | Szentmiklosi, L | |
dc.date.accessioned | 2015-12-13T22:16:09Z | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.uri | http://hdl.handle.net/1885/70724 | |
dc.description.abstract | The neutron capture cross sections of the main uranium isotopes, U235 and U238, were measured simultaneously for keV energies, for the first time by combining activation technique and atom counting of the reaction products using accelerator mass spectrometry. New data, with a precision of 3%-5%, were obtained from mg-sized natural uranium samples for neutron energies with an equivalent Maxwell-Boltzmann distribution of kT∼25keV and for a broad energy distribution peaking at 426 keV. The cross-section ratio of U235(n,γ)/U238(n,γ) can be deduced in accelerator mass spectrometry directly from the atom ratio of the reaction products U236/U239, independent of any fluence normalization. Our results confirm the values at the lower band of existing data. They serve as important anchor points to resolve present discrepancies in nuclear data libraries as well as for the normalization of cross-section data used in the nuclear astrophysics community for s-process studies. | |
dc.publisher | American Physical Society | |
dc.rights | Author/s retain copyright | |
dc.source | Physical Review Letters | |
dc.title | Novel method to study neutron capture of U 235 and U 238 simultaneously at keV energies | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 112 | |
dc.date.issued | 2014 | |
local.identifier.absfor | 029904 - Synchrotrons; Accelerators; Instruments and Techniques | |
local.identifier.ariespublication | U3488905xPUB2392 | |
local.type.status | Published Version | |
local.contributor.affiliation | Wallner, Anton, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Belgya, T., Hungarian Academy of Sciences | |
local.contributor.affiliation | Bichler, Max, Technical University of Vienna | |
local.contributor.affiliation | Buczak, K, University of Vienna | |
local.contributor.affiliation | Dillmann, I, Karlsruhe Institute of Technology (KIT) | |
local.contributor.affiliation | Kappeler, F, Karlsruhe Institute of Technology | |
local.contributor.affiliation | Lederer, C, University of Vienna | |
local.contributor.affiliation | Mengoni, A., ENEA | |
local.contributor.affiliation | Quinto, F., University of Vienna VERA | |
local.contributor.affiliation | Steier, P, University of Vienna | |
local.contributor.affiliation | Szentmiklosi, L, Hungarian Academy of Sciences | |
local.bibliographicCitation.issue | 19 | |
local.bibliographicCitation.startpage | 1 | |
local.bibliographicCitation.lastpage | 6 | |
local.identifier.doi | 10.1103/PhysRevLett.112.192501 | |
dc.date.updated | 2015-12-11T07:23:02Z | |
local.identifier.scopusID | 2-s2.0-84901036032 | |
local.identifier.thomsonID | 000335928800007 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
Download
File | Description | Size | Format | Image |
---|---|---|---|---|
01_Wallner_Novel_method_to_study_neutron_2014.pdf | 708 kB | Adobe PDF |
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.
Updated: 17 November 2022/ Responsible Officer: University Librarian/ Page Contact: Library Systems & Web Coordinator