title: Trace element measurements in high purity synthetic Al2O3 via neutron activation.
abstract: We present results from our use of thermal and fast neutron activation for the determination of trace elements in Al2O3 fabricated via the heat exchanger method (HEM™). This material has applications in microwave oscillators and gravity-wave detection. Typical concentrations obtained from these measurements show the presence of Cr (5 ppb+20%), Ti (300 ppb±9.7%), Mo (1500 ppb±15%) and Sc (3 ppb±6.7%). Details of the experiments and interpretations are given.
authors.affiliation: Ward Laboratory, Department of Physics, Cornell University, Ithaca, NY 14853, USA. smcguire1@cox.net
authors.forename: Stephen C
authors.initials: SC
authors.lastname: McGuire
authors.forename: Louis N
authors.initials: LN
authors.lastname: Hand