Publication detail

Characterization of a mixed high-energy spallation neutron–proton field using monoisotopic activation detectors

ZÁVORKA, L. ZEMAN, M. ADAM, J. KATOVSKÝ, K. KOLEKTIV, S.

Original Title

Characterization of a mixed high-energy spallation neutron–proton field using monoisotopic activation detectors

Type

journal article in Web of Science

Language

English

Original Abstract

We used monoisotopic Co, Au, and Bi threshold activation detectors to characterize the high-energy ( MeV) portion of a mixed spallation neutron–proton (n/p) field. The field was produced by irradiating the natural uranium target–blanket subcritical assembly Quinta with 660-MeV protons from Phasotron accelerator at the Joint Institute for Nuclear Research (JINR) in Dubna. Experimental yields of the (n,x) and (p,x) reactions were compared to the calculated reaction rates, which represent the convolution of particle flux and reaction cross section. The flux was simulated using the radiation transport code MCNPX 2.7.0, and the cross sections were extracted from the following three sources: the intranuclear cascade model INCL4.2, the phenomenological spherical optical model from TALYS-1.8, and the evaluated nuclear data file TENDL-2015. We show that, in most cases, the evaluated data provide a closer agreement with the experimental data in comparison with INCL4.2 model, which is an integral part of MCNPX. Our results bring a contribution to those fields of physics research that utilize computer prediction of neutron generation in the energy range of tens to hundreds MeV, such as the medical radioisotope production, radiation shielding of spallation neutron sources, and nuclear transmutation in accelerator-driven systems.

Keywords

Spallation neutron generation, Threshold activation detectors, MCNPX simulation

Authors

ZÁVORKA, L.; ZEMAN, M.; ADAM, J.; KATOVSKÝ, K.; KOLEKTIV, S.

Released

3. 7. 2018

Publisher

ELSEVIER SCIENCE BV

Location

AMSTERDAM, NETHERLANDS

ISBN

0168-9002

Periodical

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

Number

903

State

Kingdom of the Netherlands

Pages from

246

Pages to

261

Pages count

16

URL

https://www.sciencedirect.com/science/article/pii/S0168900218308325

BibTex

@article{BUT149201,
  author="Lukáš {Závorka} and Miroslav {Zeman} and Jindřich {Adam} and Karel {Katovský} and Spoluautorů {Kolektiv}",
  title="Characterization of a mixed high-energy spallation neutron–proton field using monoisotopic activation detectors",
  journal="NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT",
  year="2018",
  number="903",
  pages="246--261",
  doi="10.1016/j.nima.2018.07.009",
  issn="0168-9002",
  url="https://www.sciencedirect.com/science/article/pii/S0168900218308325"
}