Influence of the Composition of (TlGaS2)1-х(TlInSe2)x Alloys on Their Physical Properties

International audienceThe single crystals of (TlGaS2)1-х(TlInSe2)х (х = 0–0,5) solid solutions have been grown up. The photoelectric, roentgendosimetric, dielectric and optical characteristics of the (TlGaS2)1-х(TlInSe2)х solid solutions with various compositions have been determined. The maximum and spectral range of photosensitivity were found to redshift as x increases from 0 to 0.5. Both the photo-and roentgensensitivity of the solid solutions are higher than those of pure TlGaS2. The nature of dielectric losses and the hopping mechanism of charge transport in the (TlGaS2)1-х(TlInSe2)х solid solutions were established from the experimental results on high-frequency dielectric measurements. The temperature dependences of exciton peak position for various compositions (x = 0-0.3) are investigated in 77-180 K temperature interval. It was established that with increasing x in (TlGaS2)1-х(TlInSe2)х solid solutions the width of their forbidden gap decreases. Introduction. Ternary layer-chain TlGaS2 and TlInSe2 single crystals exhibit high photo-and roentgensensitivity making them well-suited for photoresistors and roentgendetectors [1-4]. The study of physical properties of the TlGaS2, TlInSe2 compounds and solid solutions on their base are very important for establishing the relations between their compositions and properties. This offers the possibility of controlling the band gap, energy position of emission bands and electrical conductivity of such semiconductors. In [5-7] the results of investigation of ac – electric and dielectric properties of TlGaS2, TlInSe2 and diluted (TlGaS2)1-х(TlInSe2)х solid solutions (x = 0.005 and 0.02) are given

Influence of the composition of (TlGaS2)1–х(TlInSe2)x solid solutions on their physical properties

The single crystals of (TlGaS2)1–х(TlInSe2)х (х = 0…0.5) solid solutions have been grown up. The photoelectric, X-ray dosimetric, dielectric and optical characteristics of the (TlGaS2)1-х(TlInSe2)х solid solutions with various compositions have been determined. The maximum and spectral range of photosensitivity were found to redshift as x increases from 0 to 0.5. Both the photo- and X-ray sensitivity of these solid solutions are higher than those of pure TlGaS2. The nature of dielectric losses and the hopping mechanism of charge transport in the (TlGaS2)1–х(TlInSe2)х solid solutions have been established from the experimental results on high-frequency dielectric measurements. The temperature dependences of exciton peak position for various compositions (x = 0…0.3) have been investigated within 77…180 K temperature interval. It has been ascertained that, with increasing x in (TlGaS2)1–х(TlInSe2)х solid solutions, the width of their forbidden gap decreases

CMS physics technical design report: Addendum on high density QCD with heavy ions

This report presents the capabilities of the CMS experiment to explore the rich heavy-ion physics programme offered by the CERN Large Hadron Collider (LHC). The collisions of lead nuclei at energies ,will probe quark and gluon matter at unprecedented values of energy density. The prime goal of this research is to study the fundamental theory of the strong interaction - Quantum Chromodynamics (QCD) - in extreme conditions of temperature, density and parton momentum fraction (low-x). This report covers in detail the potential of CMS to carry out a series of representative Pb-Pb measurements. These include "bulk" observables, (charged hadron multiplicity, low pT inclusive hadron identified spectra and elliptic flow) which provide information on the collective properties of the system, as well as perturbative probes such as quarkonia, heavy-quarks, jets and high pT hadrons which yield "tomographic" information of the hottest and densest phases of the reaction.0info:eu-repo/semantics/publishe