Journal de Physique III

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This article is an erratum for: [this article]

Issue		J. Phys. III France Volume 2, Number 9, September 1992
Page(s)		1843
DOI		10.1051/jp3:1992262

DOI: 10.1051/jp3:1992262
J. Phys. III France 2 (1992) 1843-1843

Erratum

W. Warenghem, M. Ismaili and D. Hector

Erratum of J. Phys. III France 2 p. 765

Abstract
The formula (4) must be replaced by :

$\begin{displaymath}\frac{\phi}{2\pi} = \frac{1}{\lambda}\int_n\cos r dz - \frac{1}{\lambda}\int_n'\cos r' dz \; \; \; (4)\end{displaymath}$

Where the first integral corresponds to the ray travelling along with the z direction and the second to the ray going in the reverse direction.

In the same way, the formula (12) must be replaced by :

$\begin{displaymath}\frac{\phi}{2\pi} = \frac{h}{\lambda}[n\cos r + n'\cos r'] \; \; \; (12)\end{displaymath}$

where $n'\cos r'$ is deduced from $n\cos r$ by changing $\theta$ in $-\theta$ .

As a result, the term $\displaystyle -k\ln\frac{k^2}{n_e^2}$ in the formula (16) must be disregarded and the 1 in the formula (17) as well.

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