# Scintillation characteristics of undoped and Cu+-doped Li2B4O7 single crystals

Source: [Scintillation characteristics of undoped and Cu+-doped Li2B4O7 single crystals](<https://www.sota2.com/research/paper/68fa32e41e209131ce88ba69>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T19:45:27.322Z

Authors: Masaaki Kobayashi, Mitsuru Ishii, Nachimuthu Senguttuvan

Published: 2015-03-12T15:06:18.000Z

## Abstract

Scintillation characteristics of undoped and Cu+-doped lithium tetraborate Li2B4O7 (LTB) were studied including optical transmittance, photoluminescence, radioluminescence for X- and gamma-rays, alpha/gamma ratio, and decay kinetics. The total time-integrated LYs in undoped and Cu+-doped LTB for X-rays are ~600 and ~760 ph/MeV (photons/MeV), respectively. The decay kinetics in undoped and Cu+-doped LTB are similar to each other. Typical decay spectra for pulsed X-rays can be fitted with four exponentials: for fast (t1~0.8 ns, t2~25-50 ns), medium (t3~300-400 ns), and slow (t4~20-30 ms) components. The slow component occupies about 60% of the total LY, while the fast ones less than 10%. The 10-90% rise time was 163 ps. The alpha/gamma ratio was 0.18 for external 241Am alpha-rays. The obtained increase in LY due to Cu+ doping remains modest. The Cu+-induced emission contains both fast and slow components, requiring further studies of the emission mechanism to explain the fast component.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1503.03759>)

[PDF](<https://arxiv.org/pdf/1503.03759.pdf>)