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Author(s)
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Urlass, Sebastian (HZDR, Dresden ; TU, Dresden (main) ; CERN) ; Beyer, Roland (HZDR, Dresden) ; Hammer, Sebastian (HZDR, Dresden ; TU, Dresden (main)) ; Hartmann, Andreas (HZDR, Dresden) ; Junghans, Arnd R (HZDR, Dresden ; CERN) ; Kögler, Toni (HZDR, Dresden ; Unlisted, DE) ; Lutz, Benjamin (HZDR, Dresden) ; Mingrone, Federica (CERN ; Natl. Tech. U., Athens) ; Müller, Stefan (HZDR, Dresden) ; Römer, Katja (HZDR, Dresden) ; Scheibler, Daniela (HZDR, Dresden) ; Stach, Daniel (HZDR, Dresden) ; Szücs, Tamás (HZDR, Dresden) ; Tassan, Laurent-Got (CERN ; Natl. Tech. U., Athens ; Orsay, IPN) ; Turkat, Steffen (HZDR, Dresden ; TU, Dresden (main)) ; Wagner, Andreas (HZDR, Dresden) ; Weinberger, David (HZDR, Dresden) |
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Abstract
| The $^{16}$O(n, α)$^{13}$C reaction was proposed to be measured at the neutron time-of-flight (n_TOF) facility
of CERN. To this purpose, a Double Frisch Grid Ionization Chamber (DFGIC) containing the oxygen atoms as
a component in the counting gas coupled with a switch device in order to prevent the charge collection from
the so-called γ-flash has been developed at Helmholtz-Zentrum Dresden-Rossendorf (HZDR), in Germany.
The first $^{16}$O(n, α)$^{13}$C measurement without seeing the charge of the γ-flash at n_TOF has been performed in
November 2018. After the electronics did not suffer from the γ-flash any more, another huge charge collection
was discovered. Due to the high instantaneous flux at the n_TOF facility [1] the amount of that induced charge
from neutron induced background reactions was piling up so much that the recognition of $^{16}$O(n, α)$^{13}$C reactions
from that background was very difficult. For that reason another $^{16}$O(n, α)$^{13}$C measurement at the time-of-flight
facility nELBE at HZDR which has a low instantaneous flux [2], has been performed in April 2019. Both measurements from n_TOF and nELBE will be presented here. |