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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00493866" target="_blank" >RIV/61389005:_____/18:00493866 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26220/18:PU128652

Result on the web

<a href="http://dx.doi.org/10.1016/j.nima.2018.07.009" target="_blank" >http://dx.doi.org/10.1016/j.nima.2018.07.009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2018.07.009" target="_blank" >10.1016/j.nima.2018.07.009</a>

Result language

angličtina

Original language name

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

Original language description

We used monoisotopic Co, Au, and Bi threshold activation detectors to characterize the high-energy (> 5 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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Instruments & Methods in Physics Research Section A

ISSN

0168-9002

e-ISSN

—

Volume of the periodical

903

Issue of the periodical within the volume

9

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

16

Pages from-to

246-261

UT code for WoS article

000444422200031

EID of the result in the Scopus database

2-s2.0-85049759776