Search for a new Li-based scintillator for neutron detection

Sajid Khan; H. J. Kim; H. Park; Bibi Ruqia; J. Y. Lee; U. Fawad; Sunghwan Kim; Sang Jun Kang

doi:10.3938/jkps.67.1463

Search for a new Li-based scintillator for neutron detection

Sajid Khan, H. J. Kim, H. Park, Bibi Ruqia, J. Y. Lee, U. Fawad, Sunghwan Kim, Sang Jun Kang

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Li-based scintillators are promising candidates for thermal neutron detection due to the presence of ⁶Li nuclei in the host lattice. In this study, pure and doped lithium iodide (LiI) crystals are grown by using the two-zone vertical Bridgman technique with diameters of ~1 cm and lengths of ~4 cm. The crystals were doped with Na, CO₃ and Tl activators with the aim to develop a scintillator having enhanced neutron detection efficiency. Among the grown crystals, LiI(Tl) showed the highest luminescence intensity under X-ray excitation. The LiI(Tl) crystal exhibited a broad emission spectrum between 300 and 700 nm peaking at 470 nm. Under γ-ray excitation, The LiI(Tl) crystal showed two decay-time components of 180 ns and 900 ns, respectively. The response of the LiI(Tl) crystal to spallation neutrons and the radiation damage effects were determined at the Korea Multi-purpose Accelerator Complex (KOMAC). A clear neutron capture peak was measured at 3 MeVee under spallation-neutron irradiation.

Original language	English
Pages (from-to)	1463-1468
Number of pages	6
Journal	Journal of the Korean Physical Society
Volume	67
Issue number	8
DOIs	https://doi.org/10.3938/jkps.67.1463
State	Published - 1 Oct 2015

Keywords

Bridgman crystal growth
Lithium iodide
Neutron detection

Access to Document

10.3938/jkps.67.1463

Cite this

@article{bb95677ffee5499b81933de0cf6d0143,

title = "Search for a new Li-based scintillator for neutron detection",

abstract = "Li-based scintillators are promising candidates for thermal neutron detection due to the presence of 6Li nuclei in the host lattice. In this study, pure and doped lithium iodide (LiI) crystals are grown by using the two-zone vertical Bridgman technique with diameters of ~1 cm and lengths of ~4 cm. The crystals were doped with Na, CO3 and Tl activators with the aim to develop a scintillator having enhanced neutron detection efficiency. Among the grown crystals, LiI(Tl) showed the highest luminescence intensity under X-ray excitation. The LiI(Tl) crystal exhibited a broad emission spectrum between 300 and 700 nm peaking at 470 nm. Under γ-ray excitation, The LiI(Tl) crystal showed two decay-time components of 180 ns and 900 ns, respectively. The response of the LiI(Tl) crystal to spallation neutrons and the radiation damage effects were determined at the Korea Multi-purpose Accelerator Complex (KOMAC). A clear neutron capture peak was measured at 3 MeVee under spallation-neutron irradiation.",

keywords = "Bridgman crystal growth, Lithium iodide, Neutron detection",

author = "Sajid Khan and Kim, {H. J.} and H. Park and Bibi Ruqia and Lee, {J. Y.} and U. Fawad and Sunghwan Kim and Kang, {Sang Jun}",

note = "Publisher Copyright: {\textcopyright} 2015, The Korean Physical Society.",

year = "2015",

month = oct,

day = "1",

doi = "10.3938/jkps.67.1463",

language = "English",

volume = "67",

pages = "1463--1468",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "8",

}

TY - JOUR

T1 - Search for a new Li-based scintillator for neutron detection

AU - Khan, Sajid

AU - Kim, H. J.

AU - Park, H.

AU - Ruqia, Bibi

AU - Lee, J. Y.

AU - Fawad, U.

AU - Kim, Sunghwan

AU - Kang, Sang Jun

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Li-based scintillators are promising candidates for thermal neutron detection due to the presence of 6Li nuclei in the host lattice. In this study, pure and doped lithium iodide (LiI) crystals are grown by using the two-zone vertical Bridgman technique with diameters of ~1 cm and lengths of ~4 cm. The crystals were doped with Na, CO3 and Tl activators with the aim to develop a scintillator having enhanced neutron detection efficiency. Among the grown crystals, LiI(Tl) showed the highest luminescence intensity under X-ray excitation. The LiI(Tl) crystal exhibited a broad emission spectrum between 300 and 700 nm peaking at 470 nm. Under γ-ray excitation, The LiI(Tl) crystal showed two decay-time components of 180 ns and 900 ns, respectively. The response of the LiI(Tl) crystal to spallation neutrons and the radiation damage effects were determined at the Korea Multi-purpose Accelerator Complex (KOMAC). A clear neutron capture peak was measured at 3 MeVee under spallation-neutron irradiation.

AB - Li-based scintillators are promising candidates for thermal neutron detection due to the presence of 6Li nuclei in the host lattice. In this study, pure and doped lithium iodide (LiI) crystals are grown by using the two-zone vertical Bridgman technique with diameters of ~1 cm and lengths of ~4 cm. The crystals were doped with Na, CO3 and Tl activators with the aim to develop a scintillator having enhanced neutron detection efficiency. Among the grown crystals, LiI(Tl) showed the highest luminescence intensity under X-ray excitation. The LiI(Tl) crystal exhibited a broad emission spectrum between 300 and 700 nm peaking at 470 nm. Under γ-ray excitation, The LiI(Tl) crystal showed two decay-time components of 180 ns and 900 ns, respectively. The response of the LiI(Tl) crystal to spallation neutrons and the radiation damage effects were determined at the Korea Multi-purpose Accelerator Complex (KOMAC). A clear neutron capture peak was measured at 3 MeVee under spallation-neutron irradiation.

KW - Bridgman crystal growth

KW - Lithium iodide

KW - Neutron detection

UR - http://www.scopus.com/inward/record.url?scp=84945977450&partnerID=8YFLogxK

U2 - 10.3938/jkps.67.1463

DO - 10.3938/jkps.67.1463

M3 - Article

AN - SCOPUS:84945977450

SN - 0374-4884

VL - 67

SP - 1463

EP - 1468

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 8

ER -

Search for a new Li-based scintillator for neutron detection

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this