Response to Neutrons and γ-rays of Two Liquid Scintillators

Hector Rene  Vega-Carrillo; Martha Isabel  Escalona-Llaguno; Luis  Hernandez-Adame; Sergio M.  Sarmiento-Rosales; Claudia A.  Marquez-Mata; Guillermo E.  Campillo-Rivera; V. P.  Singh; Teodoro  Rivera-Montalvo; Segundo Agustin Martinez-Ovalle

doi:10.15415/jnp.2019.62025

Authors

Hector Rene Vega-Carrillo Academic Unit of Nuclear Studies of the University Autonomous of Zacatecas, C. Cipres 10,Fracc. La Peñuela, 98060 Zacatecas, Zac. Mexico.
Martha Isabel Escalona-Llaguno Academic Unit of Nuclear Studies of the University Autonomous of Zacatecas, C. Cipres 10,Fracc. La Peñuela, 98060 Zacatecas, Zac. Mexico.
Luis Hernandez-Adame CONACyT - Center for Biological Research of the Northwest, S.C., Av. Instituto Politecnico Nacional 195, Col. Playa Palo de Santa Rita Sur 23090 La Paz, BCS. Mexico
Sergio M. Sarmiento-Rosales Academic Unit of Nuclear Studies of the University Autonomous of Zacatecas, C. Cipres 10,Fracc. La Peñuela, 98060 Zacatecas, Zac. Mexico.
Claudia A. Marquez-Mata Academic Unit of Nuclear Studies of the University Autonomous of Zacatecas, C. Cipres 10,Fracc. La Peñuela, 98060 Zacatecas, Zac. Mexico.
Guillermo E. Campillo-Rivera Academic Unit of Nuclear Studies of the University Autonomous of Zacatecas, C. Cipres 10,Fracc. La Peñuela, 98060 Zacatecas, Zac. Mexico.
V. P. Singh Karanatak University, Dharwad, Karnataka, India-580003
Teodoro Rivera-Montalvo Center for Research in Applied Science and Advanced Technology - Legaria Unit of IPN, Av. Legaria 694, Col. Irrigación, 11500 Ciudad de Mexico, Mexico
Segundo Agustin Martinez-Ovalle Pedagogical and Technological University of Colombia, Tunja, Colombia.

DOI:

https://doi.org/10.15415/jnp.2019.62025

Keywords:

Response, Liquid Scintillator, Detectors, neutrons, Gamma Rays, UltimaGold, Optiphase

Abstract

UltimaGold^TM AB and OptiphaseTrisafe are two liquid scintillators made by Perkin Elmer and EG & G Company respectively. Both are commercially promoted as scintillation detectors for α and β particles. In this work, the responses to γ-rays and neutrons of UltimaGold^TM AB and OptiphaseTriSafe liquid scintillators, without and with reflector, have been measured aiming to use these scintillators as γ-rays and neutron detectors. Responses to γ-rays and neutrons were measured as pulse shape spectra in a multichannel analyzer. Scintillators were exposed to gamma rays produced by ¹³⁷Cs,⁵⁴Mn, ²²Na and ⁶⁰Co sources. The response to neutrons was obtained with a ²⁴¹AmBe neutron source that was measured to 25 and 50 cm from the scintillators. The pulse height spectra due to gamma rays are shifted to larger channels as the photon energy increases and these responses are different from the response due to neutrons. Thus, UltimaGold^TM AB and OptiphaseTrisafe can be used to detect γ-rays and neutrons.

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