Metal Ions in Solution (IMAGE) Helmholtz Association Caption Metal ions in solution can be examined using soft X-ray radiation. In addition to metal ions, the free fluid stream in the vacuum also contains oxygen, which, following X-ray irradiation, begins to glow, ultimately affecting metal ion absorption. Researchers can now calculate the metal ions' absorptive strength and make inferences regarding the ions' electronic structures. Credit HZB Usage Restrictions None License Licensed 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.