XES spectra of water (IMAGE) Hiroshima University Caption (left) Theoretical XES spectra of water at different temperatures. Two 1b1 states are assigned as 1b1’ and 1b1”. Intensities of 1b1” are increasing with temperature, whereas those of 1b1’ are decreasing, which is the same trend with the experiment. (right) Isotope dependence of theoretical XES spectra of liquid water at 300 K. The same isotope effect can be seen in the experiment, with 1b1’ peak having much lower intensity than the 1b1” for deuterium water D2O, whereas for H2O situation is reversed. Credit Osamu Takahashi, Hiroshima University Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. 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.