Measurement of the 6Li(n, α) neutron standard cross-section at the GELINA facility
(2016) In EPJ Web of Conferences 122.- Abstract
The 6Li(n,α) reaction cross-section is commonly used as a reference cross section. However, it is only considered a neutron standard up to 1MeV. For higher energies, there are discrepancies of several per cents between recent measurements and evaluated data files. In order to extend and establish 6Li(n,α) as a neutron standard above 1MeV these discrepancies must be resolved. Our measurement at the GELINA facility at JRC-IRMM in Geel, Belgium is ongoing. We are using a double twin Frisch-grid setup to detect both α-particles from two 6Li targets and fission products from two 235U reference targets. Our targets have thick backings but are employed in pairs, one forward facing and one backward... (More)
The 6Li(n,α) reaction cross-section is commonly used as a reference cross section. However, it is only considered a neutron standard up to 1MeV. For higher energies, there are discrepancies of several per cents between recent measurements and evaluated data files. In order to extend and establish 6Li(n,α) as a neutron standard above 1MeV these discrepancies must be resolved. Our measurement at the GELINA facility at JRC-IRMM in Geel, Belgium is ongoing. We are using a double twin Frisch-grid setup to detect both α-particles from two 6Li targets and fission products from two 235U reference targets. Our targets have thick backings but are employed in pairs, one forward facing and one backward facing. In this way we still cover, in principle, a solid angle of 4π. We present some preliminary results showing that the existing cross-section data is well reproduced around the resonance at 240 keV. The final data taking will start in the beginning of 2016, when the GELINA facility goes online again after a few months of shut down.
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- author
- Jansson, Kaj LU ; Al-Adili, Ali ; Bevilacqua, Riccardo LU ; Gustavsson, Cecilia ; Hambsch, Franz Josef ; Pomp, Stephan and Vidali, Marzio
- organization
- publishing date
- 2016-06-21
- type
- Contribution to journal
- publication status
- published
- subject
- in
- EPJ Web of Conferences
- volume
- 122
- article number
- 08006
- publisher
- EDP Sciences
- external identifiers
-
- scopus:84978047757
- ISSN
- 2100-014X
- DOI
- 10.1051/epjconf/201612208006
- language
- English
- LU publication?
- yes
- id
- 1b477533-9c7a-4edd-b915-3de0377bb782
- date added to LUP
- 2017-01-20 13:40:34
- date last changed
- 2022-01-30 17:16:31
@article{1b477533-9c7a-4edd-b915-3de0377bb782, abstract = {{<p>The <sup>6</sup>Li(n,α) reaction cross-section is commonly used as a reference cross section. However, it is only considered a neutron standard up to 1MeV. For higher energies, there are discrepancies of several per cents between recent measurements and evaluated data files. In order to extend and establish <sup>6</sup>Li(n,α) as a neutron standard above 1MeV these discrepancies must be resolved. Our measurement at the GELINA facility at JRC-IRMM in Geel, Belgium is ongoing. We are using a double twin Frisch-grid setup to detect both α-particles from two <sup>6</sup>Li targets and fission products from two <sup>235</sup>U reference targets. Our targets have thick backings but are employed in pairs, one forward facing and one backward facing. In this way we still cover, in principle, a solid angle of 4π. We present some preliminary results showing that the existing cross-section data is well reproduced around the resonance at 240 keV. The final data taking will start in the beginning of 2016, when the GELINA facility goes online again after a few months of shut down.</p>}}, author = {{Jansson, Kaj and Al-Adili, Ali and Bevilacqua, Riccardo and Gustavsson, Cecilia and Hambsch, Franz Josef and Pomp, Stephan and Vidali, Marzio}}, issn = {{2100-014X}}, language = {{eng}}, month = {{06}}, publisher = {{EDP Sciences}}, series = {{EPJ Web of Conferences}}, title = {{Measurement of the <sup>6</sup>Li(n, α) neutron standard cross-section at the GELINA facility}}, url = {{http://dx.doi.org/10.1051/epjconf/201612208006}}, doi = {{10.1051/epjconf/201612208006}}, volume = {{122}}, year = {{2016}}, }