Figure 2 (IMAGE) American Physical Society Caption This graph of plasma performance against divertor temperature shows the progress in core edge integration in Super H-mode plasmas. Black data points are standard Super H-modes with no external impurities introduced, while pink points inject nitrogen to cool the divertor and overlap the target core-edge integration target region shaded green in the upper left. Credit F. Effenberg, Princeton Plasma Physics Laboratory, T. Wilks, Massachusetts Institute of Technology Usage Restrictions Use with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.