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| Titel: |
Measurement of the electric quadrupole moments of CO2, CO, N2, Cl2 and BF3 |
| Auteur: |
GRAHAM, C. IMRIE, D.A. RAAB, R.E. |
| Verschenen in: |
Molecular physics |
| Paginering: | Jaargang 93 (1998) nr. 1 pagina's 49-56 |
| Jaar: |
1998-01-01 |
| Inhoud: |
The electric quadrupole moments of a number of molecules have been determined from measurement of the birefringence induced in a gas by an electric field gradient. The values obtained are: carbon dioxide (-14·27 ± 0·61) x 10-40 C m2, carbon monoxide (-9·47 ± 0·15) x 10-40 C m2, nitrogen (-4·65 ± 0·08) x 10-40 C m2, chlorine (10·07 ± 0·16) x 10-40 C m2 and boron trifluoride (12·6 ± 0·7) x 10-40 C m2. In the calculation of the moments for carbon monoxide and boron trifluoride the small hyperpolarizability contribution was neglected in the absence of known values. By means of the Jones calculus a detailed analysis was made of the effects of strain birefringence in the cell windows and imperfect orientation of polarizing components in the light path. This analysis led to a measurement procedure which yielded results significantly different from previously reported ones obtained with essentially the same apparatus. The probable error in the earlier procedure is identified. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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