LiCaAlF6 scintillators in neutron and gamma radiation fields

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F16%3AN0000032" target="_blank" >RIV/26722445:_____/16:N0000032 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/16:00486155

Result on the web

<a href="http://dx.doi.org/10.1142/S2010194516602349" target="_blank" >http://dx.doi.org/10.1142/S2010194516602349</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S2010194516602349" target="_blank" >10.1142/S2010194516602349</a>

Result language

angličtina

Original language name

LiCaAlF6 scintillators in neutron and gamma radiation fields

Original language description

Intentionally doped LiCaAlF6 (LiCAF) single crystals are prospective scintillators, especially for thermal neutron detection through the Li-6(n, t) He-4 nuclear reaction. Four different LiCAF scintillator samples were tested in various neutron and gamma fields. Two of the tested samples were LiCAF: Eu and LiCAF: Eu, Na single crystals, and another two samples were made of LiCAF: Eu micro crystals dispersed in transparent rubber, with different rubber dimensions. All LiCAF samples contain lithium enriched to Li-6. A plutonium-beryllium source was used as a neutron source. The neutron spectrum was modified by moderator and filter to get different ratios between thermal, epithermal and fast neutron fluence rates. The MCNP code was used for calculations of the fluence rates for different configurations. Radionuclides Cs-137 and Co-60 were applied as gamma radiation sources. The light signal from the scintillator was evaluated with a photomultiplier and a multichannel analyzer. The purpose of this work was to study the characteristics of LiCAF scintillators, especially the ability to discriminate signals from neutron and gamma radiation, which is the basic scintillator condition for neutron detection in mixed neutron-gamma radiation fields. Generally, the discrimination can be done by the pulse height and/or the pulse shape of the evaluated signals. Both methods can be used for a LiCAF scintillator. However, only the pulse height discrimination method is discussed in this paper. The possibility of fast neutron detection with LiCAF scintillators was also tested.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

JF - Nuclear energy

OECD FORD branch

—

Project

<a href="/en/project/TA01010237" target="_blank" >TA01010237: Facility for nondestructive testing, diagnostics and 3D imaging based on neutron radiography and tomography.</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

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

Article name in the collection

Proceedings of the 2015 International Conference on Applications of Nuclear Techniques (CRETE15), Book Series: International Journal of Modern Physics-Conference Series, Volume: 44

ISBN

—

ISSN

2010-1945

e-ISSN

—

Number of pages

10

Pages from-to

UNSP 1660234

Publisher name

World Scientific Publ Co

Place of publication

Farrer, Singapore

Event location

Crete, Greece

Event date

Jul 14, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000385793900028