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The effects of temperature and pressure on the lifetime of benzophenone emission

✍ Scribed by Jerry A. Bell; Michael Berger; Colin Steel

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 497 KB
Volume: 28
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(74)80053-9

No coin nor oath required. For personal study only.

✦ Synopsis

The variation in ihe lifetime of flash-excited gaseous benzoph&& with pressure and temperature i.ndi&fes tfut (1) self-quenching is a r+Iively inefficient process for the Ioitglived emission, ksq = 9 X lo5 hi" s-l (estimated from soWion data1 at 25°C and 1.2 X 10' M_' s-l at 170°C and (2) the tifetimc deaeases with increasing temperature as a result of photochemical anii photophysic;ll decay pathways which have significant activation ener@cs_ The importance of diffusion to the walls on lifetime measurements is diqssed.

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