title: Automatic torque magnetometer for vacuum-to-high-pressure hydrogen environments.
abstract: An automatic torque magnetometer has been developed for use in high-pressure hydeogen. It will contain pressures ranging from vacuum to 200 atm of hydrogen gas at sample temperatures greater than 400 degrees C. This magnetometer, which uses an optical lever postion sensor and a restoring force technique has an operating range of 2.0x10(3) dyn cm to l.6x10(-4) dyn cm. An accompanying digital data collection system extends the sensitivity to 1x10(-5) dyn cm as well as increasing the data handling capacity of the system. The magnetic properties of thin films in high-temperature and high-pressure hydrogen environments can be studied using this instruments.
authors.affiliation: Engineering Experiment Station, Georgia Institute of Technology, Atlanta, Georgia 30332.
authors.forename: J W
authors.initials: JW
authors.lastname: Larsen
authors.forename: B R
authors.initials: BR
authors.lastname: Livesay