Researchers with Neutron Probe (IMAGE) University of Texas at Austin Caption Researchers at the field site using a neutron probe to measure rock moisture inside of a borehole. Credit The University of Texas at Austin Jackson School of Geosciences. Usage Restrictions The University of Texas at Austin Jackson School of Geosciences. 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.