Corrections

May 1981, “Wiggler and undulator magnets” by Herman Winick, George Brown, Klaus Halbach and John Harris appeared with the following misprints:

page 52, caption of figure 3 should read “with polarization parallel (σ).”

page 54, legend of figure 6 for black curves should read “(in operation)” instead of “(under construction).”

page 56, caption of figure 7 should read “Program by Y. Zambre.”

page 57, first column “${\mathrm{〈B〉}}^2$” should read “${\mathrm{〈B}}^2〉$”

caption of figure 8, should read “(typically 2 microns).”

page 58, third column, fourth line, should read “The undulator radiation retains the intrinsic brightness of synchrotron radiation because …”

first figure in box revised as follows: (see PDF for diagram)

page 60, first column, starting 14 lines from bottom should read “the transverse beam size ${\mathrm{(\sigma }}_x{\mathrm{,\sigma }}_y)$ should satisfy the condition ${\mathrm{\sigma /L<\gamma }}^{\text{−1}}{N}^{\text{−1/2}}$, where L is the distance from the undulator to the detector; the electron beam divergence angles ${\mathrm{(\sigma }}_x^{\prime }{\mathrm{,\sigma }}_y^{\prime })$ should satisfy ${\sigma }^{\prime }{\mathrm{<\gamma }}^{\text{−1}}{N}^{\text{−1/2}}$.”

page 62, equation 8 should read $$B_0{\text{=2B}}_r\hspace{0.17em}\exp {\mathrm{(-\pi g/\lambda }}_u\mathrm{)\times }\frac{\sin \mathrm{\pi /M}}{\mathrm{\pi /M}}\text{[1−}\exp {\text{(2πh/λ}}_u\mathrm{)]}$$

middle column, line end of first paragraph should read “…from 3–7 keV are shown in figure 9”.

May 1981, “Facilities in the United States” by Ednor M. Rowe: table, page 36, “A. I. Bienstock” should read “A. I. Bienenstock”; “Standford, CT” should read “Stanford, CA.”