Study of wavelength-shifting chemicals for use in large-scale water Cherenkov detectors

Study of wavelength-shifting chemicals for use in large-scale water Cherenkov detectors

Cherenkov detectors employ various methods to maximize light collection at the photomultiplier tubes (PMTs). These generally involve the use of highly reflective materials lining the interior of the detector, reflective materials around the PMTs, or wavelength-shifting sheets around the PMTs.

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Temperature and frequency dependent electrical transport in thiourea and tris (thiourea) copper (l) sulphate

The d.c. conductivity of thiourea and tris (thiourea) copper sulphate have been measured as a

function of temperature, including their phase transition temperatures. The thermal activation energy values obtained showed that the two compounds behaved as semiconducting materials.

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The temperature dependent electrical transport in biphenyl derivatives

The temperature dependent electrical transport in biphenyl derivatives

The d.c. electrical conductivity measurements as a function of temperature of 4,4-dibromobiphenyl (DBrBP), 4,4-dichlorobiphe

nyl (DClBP) and 4,4-dimethoxybiphenyl (DMOBP) compounds have been carried out. 

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Electrical transport as a function of temperature in urea and cobalt (III)-urea complex

Electrical transport as a function of temperature in urea and cobalt (III)-urea complex

The temperature dependence of the electrical conductivity, and the voltage±current

dependence of urea and its cobalt solid complex were determined. The values of the thermal

activation energies indicate that the two compounds behave like semiconductors

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