نتایج جستجو برای: alkali halide

تعداد نتایج: 22893  

Journal: :Angewandte Chemie 2002
Angelo J Alfano Karl O Christe

Spontaneous reactions between alkali metal or alkaline earth peroxides and hydrogen (deuterium) halide gases demonstrate the efficient production of singlet delta oxygen in a non-liquid medium. These reactions occur under ambient conditions without the need for any external energy source. The production of singlet delta oxygen was verified by direct emission spectroscopy at 1.27 microns with a ...

Journal: :Physical review letters 2017
Juan J Mazo Dirk Dietzel Andre Schirmeisen J G Vilhena Enrico Gnecco

We demonstrate how an exponentially saturating increase of the contact area between a nanoasperity and a crystal surface, occurring on time scales governed by the Arrhenius equation, is consistent with measurements of the static friction and lateral contact stiffness on a model alkali-halide surface at different temperatures in ultrahigh vacuum. The "contact ageing" effect is attributed to atom...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2009
V N Kolobanov V V Mikhailin S P Chernov D A Spassky V N Makhov M Kirm E Feldbach S Vielhauer

Fast (τ∼1.7 ns) broadband (full width at half-maximum = 1.1 eV) vacuum ultraviolet (VUV; hν = 8.4 eV) luminescence from MgF(2) crystals has been detected at low temperature (T<80 K) and analyzed with techniques of cathodoluminescence and time-resolved VUV spectroscopy using synchrotron radiation. The VUV emission discovered has been attributed to the luminescence of spin-singlet self-trapped ex...

Journal: :Journal of the American Chemical Society 2007
Jared D Smith Richard J Saykally Phillip L Geissler

It is widely believed that the addition of salts to water engenders structural changes in the hydrogen-bond network well beyond the adjacent shell of solvating molecules. Classification of many ions as "structure makers" and "structure breakers" has been based in part on corresponding changes in the vibrational spectra (Raman and IR). Here we show that changes in O-H vibrational spectra induced...

Journal: :Japanese Journal of Radiological Technology 1991

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2008

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