Text Formatting ⇒ Onecolumn without page break

[tikorost]

Hi guys. How can I make a one column in a two column article, without page breaking???
I am writing an article to submit to NIM. The article should be 2 columns.
In one of the pages I need to put a wide figure at the top of the page, and then continue with 2 column text, like in the attached Screenshot_1.png...
But the way I am trying this, latex puts the 2 column continuation to a new page...
Is this possible in Latex without page break?

This is how I try:
\documentclass[12pt]{elsarticle}
\journal{Nucl. Instrum. Methods A}
\begin{document}

\begin{twocolumn}
bla, bla, bla
\end{twocolumn}
\onecolumn
\begin{figure}[t]
\begin{center}
\includegraphics[width=17.4cm]{pic/RESULTS_SUM.pdf}
\label{Si_Results}
\end{center}
\end{figure}

\begin{twocolumn}
bla, bla, bla,
\end{twocolumn}
\end{document}

[Ijon Tichy]

For twocolumn documents with elsarticle you should use either option twocolumn (with additional option 3p) or option 5p. See the manual for more information. However, \twocolumn is a command, that should not be misused as an environment. See an introduction into LaTeX for more information.

Figures spanning both columns can be placed top aligned using figure* environment instead of figure. See also an introduction into LaTeX for more information.

Code, edit and compile here:

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\documentclass[12pt,twocolumn]{elsarticle}
\journal{Nucl. Instrum. Methods A}
\usepackage{blindtext}
\begin{document}
\Blindtext[3]
\begin{figure*}[t]
\centering% Do not use center environment, it adds additional vertical space
\includegraphics[width=.7\textwidth]{example-image}
\caption{Testfigure}\label{Si_Results}
\end{figure*}
\Blindtext[3]
\end{document}
 
 
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[tikorost]

THANK YOU VERY MUCH! Done!!! It WORKS!!!