Study of secondary neutron interactions with ²³²Th, ¹²⁹I, and ¹²⁷I nuclei with the uranium assembly "QUINTA" at 2, 4, and 8 GeV deuteron beams of the JINR Nuclotron accelerator

J Adam; V V Chilap; V I Furman; M G Kadykov; J Khushvaktov; V S Pronskikh; A A Solnyshkin; V I Stegailov; M Suchopar; V M Tsoupko-Sitnikov; S I Tyutyunnikov; J Vrzalova; V Wagner; L Zavorka

doi:10.1016/j.apradiso.2015.11.002

Study of secondary neutron interactions with ²³²Th, ¹²⁹I, and ¹²⁷I nuclei with the uranium assembly "QUINTA" at 2, 4, and 8 GeV deuteron beams of the JINR Nuclotron accelerator

Appl Radiat Isot. 2016 Jan:107:225-233. doi: 10.1016/j.apradiso.2015.11.002. Epub 2015 Nov 4.

Authors

Affiliations

¹ Joint Institute for Nuclear Research, Dubna, Russia; Nuclear Physics Institute ASCR PRI, Czech Republic.
² Center of Physical and Technical Projects "Atomenergomash", Moscow, Russia.
³ Joint Institute for Nuclear Research, Dubna, Russia.
⁴ Joint Institute for Nuclear Research, Dubna, Russia. Electronic address: khushvaktov@jinr.ru.
⁵ Joint Institute for Nuclear Research, Dubna, Russia; Fermi National Accelerator Laboratory, Batavia, USA.
⁶ Nuclear Physics Institute ASCR PRI, Czech Republic.

PMID: 26556554
DOI: 10.1016/j.apradiso.2015.11.002

Abstract

The natural uranium assembly, "QUINTA", was irradiated with 2, 4, and 8GeV deuterons. The (232)Th, (127)I, and (129)I samples have been exposed to secondary neutrons produced in the assembly at a 20-cm radial distance from the deuteron beam axis. The spectra of gamma rays emitted by the activated (232)Th, (127)I, and (129)I samples have been analyzed and several tens of product nuclei have been identified. For each of those products, neutron-induced reaction rates have been determined. The transmutation power for the (129)I samples is estimated. Experimental results were compared to those calculated with well-known stochastic and deterministic codes.

Keywords: Accelerator driven system; Fission reactions; Transmutation.