It is suggested that electrons trapped in irradiated 95% alcohol $ssse~ (+ 5% HZO) do not r-et ~vith the scwenger IIIO[ecules and probably recombine with geminate cations. The scavenging has been interpreted in terms of dry etectrort lX%TCfiOll. There are many indications of the important role of tu
Decay of trapped electrons by tunnelling to scavenger molecules in low-temperature glasses
β Scribed by M. Tachiya; A. Mozumder
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 418 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The decay of trapped electrons'by turinelling to scavenge; molecules is investigated theoretictiy.
An e&t expression has been derived which gives an exporqtiat decrease of.the.trapped ckktron yiekwith the scavenger concintration at any given time.
,.. ' .' ..
Recently several workers [l-5] have mvbked
,electron tunnelling to explain the decay of trapped '. electrons in glassy,media in the presence of scaven-:_ P(I)=~exp[+(T;)!I 1. -,. '... (I),' .' ,gers'. Some simplifjed calculations have been made-1 _ .. '.
π SIMILAR VOLUMES
Upon phbtqbleaching, trapped els&oas Fern to react with' th: scavenger molecules wiih?ut the vcrtic31 transition throu'gh the conduction band.
## Pulse radiolysis of deuterated aqueous Liclglasses at temperatures in the range 6 K to 70 K show that the yield G(eiR) of infrared absorb-electrons (em) inaeases sharpIy as the temperature is lowered when [LEl] > 10 hf. Under these conditions the yield of visible absorbing electrons (e--,& decr
One-photon non-photochemical hole burning (NPHB) is shown to be a viable method for producing narrow-line twophoton spectra of molecules in solution at low temperature. The TPE spectrum of phenanthrene at 2 K in a glassy medium is presented and is shown to manifest one-photon NPHB effects.