Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals

Dickens, Peter T.; Marcial, José; McCloy, John; McDonald, Benjamin S.; Lynn, Kelvin G.

doi:10.1016/j.jlumin.2017.05.047

Title: Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals

Abstract

In this study, LiAlO₂ crystals doped with rare-earth elements and Ti were produced by the CZ method and spectroscopic and neutron detection properties were investigated. Photoluminescence revealed no clear luminescent activation of LiAlO₂ by the rare-earth dopants though some interesting luminescence was observed from secondary phases within the crystal. Gamma-ray pulse height spectra collected using a ¹³⁷Cs source exhibited only a Compton edge for the crystals. Neutron modeling using Monte Carlo N-Particle Transport Code revealed most neutrons used in the detection setup are thermalized, and while using natural lithium in the crystal growth, which contains 7.6% ⁶Li, a 10 mm Ø by 10 mm sample of LiAlO₂ has a 70.7% intrinsic thermal neutron capture efficiency. Furthermore, the pulse height spectra collected using a ²⁴¹Am-Be neutron source demonstrated a distinct neutron peak.

Authors:: Dickens, Peter T.; Marcial, José; McCloy, John; McDonald, Benjamin S.; Lynn, Kelvin G.

Publication Date:: Sun Oct 01 00:00:00 EDT 2017

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1376735

Alternate Identifier(s):: OSTI ID: 1364380

Report Number(s):: PNNL-SA-121859
Journal ID: ISSN 0022-2313; S0022231316315320; PII: S0022231316315320

Grant/Contract Number:: AC05-76RL01830; PNNL-SA-121859; AC0576RL01830

Resource Type:: Published Article

Journal Name:: Journal of Luminescence

Additional Journal Information:: Journal Name: Journal of Luminescence Journal Volume: 190 Journal Issue: C; Journal ID: ISSN 0022-2313

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Dickens, Peter T., Marcial, José, McCloy, John, McDonald, Benjamin S., and Lynn, Kelvin G. Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals.  Netherlands: N. p., 2017. 
Web.  doi:10.1016/j.jlumin.2017.05.047.

Copy to clipboard


                    Dickens, Peter T., Marcial, José, McCloy, John, McDonald, Benjamin S., & Lynn, Kelvin G. Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals.  Netherlands.  https://doi.org/10.1016/j.jlumin.2017.05.047

Copy to clipboard


                    Dickens, Peter T., Marcial, José, McCloy, John, McDonald, Benjamin S., and Lynn, Kelvin G. Sun .  
"Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals".  Netherlands.  https://doi.org/10.1016/j.jlumin.2017.05.047.

Copy to clipboard


                    
@article{osti_1376735,

  title        = {Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals},

  author       = {Dickens, Peter T. and Marcial, José and McCloy, John and McDonald, Benjamin S. and Lynn, Kelvin G.},

  abstractNote = {In this study, LiAlO2 crystals doped with rare-earth elements and Ti were produced by the CZ method and spectroscopic and neutron detection properties were investigated. Photoluminescence revealed no clear luminescent activation of LiAlO2 by the rare-earth dopants though some interesting luminescence was observed from secondary phases within the crystal. Gamma-ray pulse height spectra collected using a 137Cs source exhibited only a Compton edge for the crystals. Neutron modeling using Monte Carlo N-Particle Transport Code revealed most neutrons used in the detection setup are thermalized, and while using natural lithium in the crystal growth, which contains 7.6% 6Li, a 10 mm Ø by 10 mm sample of LiAlO2 has a 70.7% intrinsic thermal neutron capture efficiency. Furthermore, the pulse height spectra collected using a 241Am-Be neutron source demonstrated a distinct neutron peak.},

  doi          = {10.1016/j.jlumin.2017.05.047},

  journal      = {Journal of Luminescence},

  number       = C,

  volume       = 190,

  place        = {Netherlands},

  year         = {Sun Oct 01 00:00:00 EDT 2017},

  month        = {Sun Oct 01 00:00:00 EDT 2017}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Publisher's Version of Record
https://doi.org/10.1016/j.jlumin.2017.05.047

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 9 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referencing / citing this record:

The Role of the Cu on OSL Emission in Gamma-LiAlO2:Cu Crystal
journal, January 2020

Xu, Xun; Liu, Tingyu; Lu, Yazhou
Journal of Electronic Materials, Vol. 49, Issue 4
DOI: 10.1007/s11664-020-07952-y

Ultra-Low Voltage Metal Oxide Thin Film Transistor by Low-Temperature Annealed Solution Processed LiAlO2 Gate Dielectric
journal, November 2019

Sharma, Anand; Chourasia, Nitesh K.; Acharya, Vishwas
Electronic Materials Letters, Vol. 16, Issue 1
DOI: 10.1007/s13391-019-00184-1

Similar Records in DOE PAGES and OSTI.GOV collections:

Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO 2 single crystals

Journal Article Dickens, Peter T. ; Marcial, José ; McCloy, John ; ... - Journal of Luminescence

In this study, LiAlO2 crystals doped with rare-earth elements and Ti were produced by the CZ method and spectroscopic and neutron detection properties were investigated. Photoluminescence revealed no clear luminescent activation of LiAlO2 by the rare-earth dopants though some interesting luminescence was observed from secondary phases within the crystal. Gamma-ray pulse height spectra collected using a 137Cs source exhibited only a Compton edge for the crystals. Neutron modeling using Monte Carlo N-Particle Transport Code revealed most neutrons used in the detection setup are thermalized, and while using natural lithium in the crystal growth, which contains 7.6 % 6Li, a 10more »« less
https://doi.org/10.1016/j.jlumin.2017.05.047
Structural study of Ca{sub 2}Gd{sub 2}Ge{sub 2}O{sub 9} and optical spectroscopy of the Eu{sup 3+} dopant ion

Journal Article Piccinelli, Fabio ; Pedroni, Marco ; Cagliero, Stefano ; ... - Journal of Solid State Chemistry

The new rare earth-based germanate compound Ca{sub 2}Gd{sub 2}Ge{sub 2}O{sub 9} (orthorhombic (Pnma) crystal structure), has been characterized and investigated for the first time, using synchrotron powder X-ray diffraction. From Rietveld refinement calculations on the collected powder pattern we observe an inhomogeneous distribution of the two available cationic sites by Gd{sup 3+} and Ca{sup 2+} ions. In particular, the former prefers the occupation (67.5%) of the site with 8-fold coordination. In addition, we observed a not negligible degree of distortion of the Ge{sub 2}O{sub 7}{sup 6−} unit. Finally, luminescence spectra and decay curves of Eu{sup 3+} doped Ca{sub 2}Gd{sub 2}Ge{submore »« less
https://doi.org/10.1016/J.JSSC.2014.01.025
Glass structure and crystallization in boro-alumino-silicate glasses containing rare earth and transition metal cations: a US-UK collaborative program

Journal Article McCloy, John S. ; Marcial, José ; Patil, Deepak ; ... - MRS Advances

Nuclear wastes generated from reprocessing of used nuclear fuel tend to contain a large fraction of rare earth (RE, e.g., Nd³⁺), transition (TM, e.g., Mo⁶⁺, Zr⁴⁺), alkali (A, e.g., Cs⁺), and alkaline earth cations (AE, e.g., Ba²⁺, Sr²⁺). Various strategies have been considered for immobilizing such waste streams, varying from nominally crystal-free glass to glass-ceramic to multi-phase ceramic waste forms. For glass and glass-ceramic waste forms, the added glass-forming system is generally alkali-alkaline earth-aluminoborosilicate (i.e., Na-Ca-Al-B-Si oxide). In a US-UK collaborative project, summarized here, we investigated the glass structure and crystallization dependence on compositional changes in simulated nuclear waste glassesmore »« less
https://doi.org/10.1557/adv.2019.99

Full Text Available
Diamond as a solid state micro-fission chamber for thermal neutron detection at the VR-1 research reactor

Conference Pomorski, Michal ; Mer-Calfati, Christine ; Foulon, Francois ; ...

Diamond exhibits a combination of properties which makes it attractive for neutron detection in hostile conditions. In the particular case of detection in a nuclear reactor, it is resilient to radiation, exhibits a natural low sensitivity to gamma rays, and its small size (as compared with that of gas ionisation chambers) enables fluency monitoring with a high position resolution. We report here on the use of synthetic CVD diamond as a solid state micro-fission chamber with U-235 converting material for in-core thermal neutron monitoring. Two types of thin diamond detectors were developed for this application. The first type of detectormore »« less
Improved Lithium Iodide neutron scintillator with Eu $^{2 +}$ activation II: Activator zoning and concentration effects in Bridgman-grown crystals

Journal Article Boatner, Lynn A. ; Comer, Eleanor P. ; Wright, Gomez W. ; ... - Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

We have previously reported on the formation of Suzuki Phase precipitate particles as a result of the addition of the divalent activator ion Eu²⁺ to the monovalent alkali halide host LiI. [Boatner et al. (2017)]. These precipitates form during Bridgman or other melt-growth processes, even at low Eu²⁺ concentrations (e.g., 0.1% EuI₂ doping), and scatter the scintillation light reducing the optical transparency of the scintillator and adversely affecting its radiation-detection performance. In our prior work, we developed a two-stage thermal-treatment method for the post-growth removal of the Suzuki Phase particles and the realization of a significant improvement in the opticalmore »« less
Cited by 7
https://doi.org/10.1016/j.nima.2018.06.057

Full Text Available

Similar Records

Title: Spectroscopic and neutron detection properties of rare earth and titanium doped LiAlO2 single crystals

Abstract

Citation Formats

The Role of the Cu on OSL Emission in Gamma-LiAlO2:Cu Crystal journal, January 2020

Ultra-Low Voltage Metal Oxide Thin Film Transistor by Low-Temperature Annealed Solution Processed LiAlO2 Gate Dielectric journal, November 2019

The Role of the Cu on OSL Emission in Gamma-LiAlO2:Cu Crystal
journal, January 2020

Ultra-Low Voltage Metal Oxide Thin Film Transistor by Low-Temperature Annealed Solution Processed LiAlO2 Gate Dielectric
journal, November 2019