MAGNETIC EFFECTS OF TUNNELLING RECOMBINATION LUMINESCENCE IN CsI AND KCl DOPED CRYSTALReportar como inadecuado




MAGNETIC EFFECTS OF TUNNELLING RECOMBINATION LUMINESCENCE IN CsI AND KCl DOPED CRYSTAL - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.



Abstract : CsI and KCl crystals doped with monovalent impurities such as Ag, Tl, Na, etc

. and exposed to ionising radiations at low temperature present a luminescence which persists many hours after the end of the irradiation. The process is attributed to a tunnelling recombination between nearby trapped electrons and holes. An external magnetic field 0 ⩽ B ⩽ 6T induces in CsI : NaI and KCl : AgCl or : NaCl a strong reduction of the intensity of the phosphorescence caused by a partial polarization of the electron spins of the defect pairs. No effect has been found in CsI : TlI and KCl : TlCl or : CuCl. The application of a resonant microwave field tends to compensate the magnetic field effect and allows in Csl : NaI only, the optical detection of EPR of the hole type defect responsible for the afterglow process.





Autor: O. Thiébaud J. Pilloud M. Aegerter C. Jaccard

Fuente: https://hal.archives-ouvertes.fr/



DESCARGAR PDF




Documentos relacionados