X-ray absorption and low-temperature optical spectroscopy of coenzyme B-12
β Scribed by Eefi Chen; SuzanneM. Frisbie; D. Wirt; Irit Sagi; MarkR. Chance
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 74 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0162-0134
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Anomalous low-temperature behaviour of is observed by both Raman-spectroscopy using laser excitation Cu 2 O frequencies near the resonance of the 1S "blue excitonΓ and x-ray powder di β ractometry using a high-resolution Guinier Γlm camera. Changes in frequency of the Raman-allowed phonon band, and a
main extends from GeS 2 to the composition with n Ο 0.55 Glasses belonging to the Ga 2 S 3 -GeS 2 line are studied at room (n Ο Ga/(Ga Ο© Ge)). The XAFS spectroscopy (X-ray temperature and at 7 K by XAFS spectroscopy at Ga and Ge absorption fine structure) is well suited to investigate sepa-K-edges.