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Non-photochemical hole burning of chlorophyll a and b in polystyrene

✍ Scribed by T.P. Carter; G.J. Small

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 409 KB
Volume: 120
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(85)87036-6

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✦ Synopsis

Facile non-photochsmicnl

hole burning is reported Tar chlorophyll II and b in polyslyrcnr lilms. The holti burned at T=1.9 K ax stable. that is. do nor sxhibit any spontaneous hole hlling following wrminalion of the bum. However. laser-induced filling of a primary hole at wI1 resulting from secondary irradiation to the low-and high-energy side of uH is observed (with the latter significantly more efficient). The filling is not accompanied hy speclrnl diffusion. Thermal qcling cxperimenls reveal a large hysteresis crkct associated with ground-state sprc~ral diffusion. The optical dcphasing is found to obey a T'-3' "J dependence.

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