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Isotope effect on localised phonons in mixed crystal spectra

✍ Scribed by Gad Fischer

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
302 KB
Volume
20
Category
Article
ISSN
0009-2614

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✦ Synopsis

Well developed progressions in phonon modes have been observed in the electronic spectra of 1,s nzphthyridine in durene. The effects of isotopic substitution of both guest and host molecules indiaate that the phonons we largely IocaLised on the guest and that the force constants and/or form of the normal coordinates are isotope dependent.

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During the past ten years, the relaxation of international tensions between East and West has resulted in the so-called ``peace dividendsΒΊ. Among these dividends, solid state physicists have profited from the increasing availability of stable isotopes of many elements at affordable prices. These iso