| Autor: |
Robert F. Curl, Richard S. Judson, R. S. Lowe, Philip R. Brooks, Peter Hering |
| Rok vydání: |
1980 |
| Předmět: |
|
| Zdroj: |
Physical Review Letters. 44:687-690 |
| ISSN: |
0031-9007 |
| DOI: |
10.1103/physrevlett.44.687 |
| Popis: |
The reaction exoergicity of K + HgBr\ensuremath{\rightarrow}KBr + HgBr ($\ensuremath{\Delta}{D}_{0}=\ensuremath{-}0.86\ifmmode\pm\else\textpm\fi{}0.09$ eV) plus the energy of a photon of $\ensuremath{\lambda}l606\ifmmode\pm\else\textpm\fi{}26$ nm provides sufficient energy to open the channel to HgBr* ($\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{B}^{2}\ensuremath{\Sigma}^{+}$). Although neither reagents nor products absorb near 595 nm, luminescence at 500 nm is observed from the crossing region of beams of K, Hg${\mathrm{Br}}_{2}$, and photons ($\ensuremath{\lambda}\ensuremath{\sim}595$ nm). This emission is attributed to HgBr* formed by light absorption during reactive collision. The cross section is \ensuremath{\sim} ${10}^{\ensuremath{-}17}$ ${\mathrm{cm}}^{2}$ at \ensuremath{\sim} 2 MW/${\mathrm{cm}}^{2}$. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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