Electron and hole trapping in Li2MoO4 cryogenic scintillator
Source abstract
Abstract
Abstract The origin and thermal stability of charge trapping centers were studied in Li2MoO4 cryogenic scintillators by correlated electron paramagnetic resonance (EPR) and thermally stimulated luminescence (TSL) measurements. Up to five electron and three hole trapping centers were detected in the crystals X-ray irradiated at 77 K. The electron traps were ascribed to MoO43− molecular complexes, unperturbed and perturbed by neighboring defects, while the hole traps – to O− lattice ions perturbed by lithium and molybdenum vacancies. The thermal stability of the trapping centers was studied and the depths of electron and hole traps were determined. The TSL peaks observed in the 77–300 K temperature range were related to the depletion of the detected paramagnetic centers. Influence of the revealed centers on the scintillation light yield is discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Radiation Detection and Scintillator Technologies · Luminescence Properties of Advanced Materials · Advanced NMR Techniques and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Li-containing scintillating bolometers for low background physics10.1051/epjconf/20136502003 ↗
2. Development of a Li2MoO4 scintillating bolometer for low background physics
3. First scintillating bolometer tests of a CLYMENE R&D on Li2MoO4 scintillators towards a large-scale double-beta decay experiment10.1016/j.nima.2018.02.101 ↗
4. Aboveground test of anadvanced Li2MoO4 scintillating bolometer to search for neutrinoless double beta decay of 100Mo10.1016/j.astropartphys.2015.06.002 ↗
5. Development of a Li2MoO4 scintillating bolometer for low background physics10.1088/1748-0221/8/10/P10002 ↗
6. Measuring the light Yield in a CaMoO4 scintillating crystal10.1134/S0020441210060059 ↗
7. Trap centers in molybdates10.1016/j.optmat.2013.06.054 ↗
8. Measurement of the property of cooled lead molybdate as a scintillator10.1016/0168-9002(92)90945-Z ↗
9. Excitation energy transfer to luminescence centers in MIIMoO4 (MII = Ca, Sr, Zn, Pb) and Li2MoO410.1016/j.jlumin.2017.02.048 ↗
10. Low temperature luminescence and charge carrier trapping in a cryogenic scintillator Li2MoO410.1016/j.jlumin.2015.05.042 ↗
11. First test of Li2MoO4 crystal as a cryogenic scintillating bolometer10.1016/j.nima.2009.11.059 ↗
12. Radiation defects in lithium salts of normal oxyacids of the sixth B subgroup elements
13. Growing of 106CdWO4, ZnWO4, and ZnMoO4 scintillation crystals for rare events search by low thermal gradient Czochralski technique
14. The crystal structures of phenacite-type Li2(MoO4), and scheelite-type LiY(MoO4)2 and LiNd(MoO4)210.1524/zkri.216.8.449.20358 ↗
15. EasySpin, a comprehensive software package for spectral simulation and analysis in EPR10.1016/j.jmr.2005.08.013 ↗
16. McKeever · 1985
17. Defect states and temperature stability of Eu2+ center in Eu-doped yttrium aluminum garnet10.1016/j.jlumin.2017.05.065 ↗
18. Nuclear spins and moments10.1063/1.555544 ↗
19. Spin-orbit coupling in the first and second transition series10.1039/tf9615701441 ↗
20. Abragam · 1970 · vol. 1
21. Electron and hole traps in yttrium orthosilicate single crystals: the critical role of Si-unbound oxygen10.1103/PhysRevB.90.064104 ↗
22. Pilbrow · 1990
23. Electron Spin Resonance study of charge trapping in α-ZnMoO4 single crystal scintillator10.1016/j.optmat.2015.05.032 ↗
24. The isotropic hyperfine interaction10.1021/j100860a007 ↗
25. Electronic Structures and X-ray Photoelectron spectra of MoO2 and Li2MoO410.1016/0009-2614(81)80363-6 ↗
26. Luminescence and photo‐thermally stimulated defect‐creation processes in Bi3+‐doped single crystals of lead tungstate10.1002/pssb.201552697 ↗
27. Study of the defects in La3Ta0.5Ga5.5O14 single crystals10.1016/j.jlumin.2016.08.023 ↗
28. Meilman · 1977
29. Hole capture in PbWO4:Mo,La(Y) scintillator crystals10.1103/PhysRevB.83.094123 ↗
30. The structure of the paramagnetic lithium center in zinc oxide and beryllium oxide10.1016/0022-3697(68)90193-5 ↗
31. Electron spin-resonance (ESR) and electron-nuclear double-resonance (ENDOR) study of the self-trapped hole in ZnWO4 single crystals10.1088/0953-8984/13/7/320 ↗
32. The stable Ce4+ center: a new Tool to optimize Ce-doped oxide scintillators10.1109/TNS.2015.2495119 ↗
33. Formation Mechanism of radical Anions in the Adsorption of NO + O2 and NO2 + O2 Mixtures on ZrO2 According to EPR and TPD data10.1023/A:1015320528156 ↗
34. Oxygen chemisorption on tin oxide: correlation between electrical conductivity and EPR measurements10.1116/1.570389 ↗
35. Spin-orbit coupling and electron-affinity determinations from radiative capture of electrons by oxygen atoms10.1063/1.1697278 ↗
36. Spassky · 2017 · vol. 200 · 242
37. Charge trapping processes and energy transfer studied in lead molybdate by EPR and TSL10.1016/j.jlumin.2018.09.052 ↗
38. Electron self-trapped at molybdenum complex in lead molybdate: an EPR and TSL comparative study10.1016/j.jlumin.2017.07.066 ↗
39. Luminescence and charge trapping features of archPbMoO4 lead molybdate crystals grown from archaeological lead10.1016/j.jlumin.2020.117305 ↗
40. PbMoO4 synthesis from ancient lead and its single crystal growth for neutrinoless double beta decay search10.3390/cryst10030150 ↗
41. Cotton · 1990 · 204
42. 2014
43. Theory of the nuclear hyperfine structure of paramagnetic resonance spectra in crystals10.1098/rspa.1951.0022 ↗