Response to Mono-Energetic Neutrons and Light Output Function for Liquid Organic Scintillators PYR5/DIPN and THIO5/DIPN

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F23%3A00558262" target="_blank" >RIV/60162694:G43__/23:00558262 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14330/22:00128966 RIV/60162694:G45__/23:00558262 RIV/68407700:21340/22:00360660 RIV/26722445:_____/22:N0000053

Result on the web

<a href="https://www.mdpi.com/2412-382X/6/2/18/pdf?version=1652329442" target="_blank" >https://www.mdpi.com/2412-382X/6/2/18/pdf?version=1652329442</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/qubs6020018" target="_blank" >10.3390/qubs6020018</a>

Result language

angličtina

Original language name

Response to Mono-Energetic Neutrons and Light Output Function for Liquid Organic Scintillators PYR5/DIPN and THIO5/DIPN

Original language description

Liquid organic scintillators are important devices for measurements of neutron radiation. Currently, large-scale liquid organic scintillators have capabilities of detecting neutrons, but the determination of the neutron energy spectra is a challenge. This work aims to measure the responses of two liquid two-component scintillators to mono-energetic neutron radiation and to determine their light output function, which is necessary for proper neutron energy spectra determination. Both scintillators are composed of the solvent di-iso-propyl-naphthalene (DIPN) mixed isomers. The first scintillator, labeled PYR5/DIPN, contains the luminophore 1-phenyl-3-(2,4,6-trimethyl-phenyl)-2-pyrazoline with a concentration of 5 g/L. The second scintillator labeled THIO5/DIPN contains the luminophore 2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene also with a concentration of 5 g/L. The responses to neutron energies of 1.5 MeV, 2.5 MeV, and 19 MeV are measured at PTB in Braunschweig. The responses to neutron energies of 2.45 MeV and 14 MeV were measured at CTU in Prague using DD and DT reactions. The responses to a silicon filtered beam were measured at Research Centre Řež. The measurements were processed using a two-parameter spectrometric system NGA-01 to discriminate neutrons from gamma rays. The obtained responses are dominated by recoil protons from elastic collisions of neutrons with hydrogen atoms. The edge of the response of recoil protons gives information about the light output of neutrons, compared to gamma rays for the same radiation energy. The light output function for protons in the PYR5/DIPN scintillator is L(Ep ) = 0.6294Ep − 1.00(1 − exp(−0.4933Ep0.95 )). The light output function for protons in the THIO5/DIPN scintillator is L(Ep ) = 0.6323Ep − 1.00(1 − exp(−0.4986Ep0.9883 )). The light output functions well resemble the standard shape, and they are quite similar to each other. That suggests a weak influence of the luminophore on the light output function. The light output functions are ready to be incorporated to the response matrix for the neutron energy spectra determination.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

21100 - Other engineering and technologies

Project

<a href="/en/project/LTAUSA18198" target="_blank" >LTAUSA18198: ADAR - Accelerator Driven Advanced Reactor</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Quantum Beam Science

ISSN

2412-382X

e-ISSN

2412-382X

Volume of the periodical

6

Issue of the periodical within the volume

2

Country of publishing house

CH - SWITZERLAND

Number of pages

7

Pages from-to

18

UT code for WoS article

000818225300001

EID of the result in the Scopus database

2-s2.0-85130548620