Thermoluminescence of ultra-high dilutions of lithium chloride and sodium chloride

Ultra-high dilutions of lithium chloride and sodium chloride (10(-30) g cm(-3)) have been irradiated by X- and gamma-rays at 77 K, then progressively rewarmed to room temperature. During that phase, their thermolumineseence has been studied and it was found that, despite their dilution beyond the Avogadro number, the emitted light was specific of the original salts dissolved initially. (C) 2003 Elsevier Science B.V. All rights reserved.